剃刀页面中动态生成的字段抛出异常
dynamically generated field throwing exception in razor pages
我有一些动态生成的 fields.When 我正在向数据库中插入值，但无法在列表中获取值。它抛出空值异常。这是我的代码。
CSHTML.CS 文件
[BindProperty]
public RequestForm RequestForm { get; set; }
public List<RequestForm> RequestFormList { get;set;}
OnPost 方法
if(RequestFormList.Any())
{
for(var i=0; i<= RequestFormList.Count(); i++)
{
RequestForm.Counter = i;
_context.Entry(RequestForm).State = EntityState.Added;
}
}
当我单击“提交”按钮时，它会转到处理程序，但当它到达 RequestFormList.Any() 时，会抛出错误。理解它没有传递任何值。
已编辑**** **********
Onget 方法
public async Task<PageResult> OnGetAsync(string? RequestID)
{
UserRole = HttpContext.Session.GetString("userrole");
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
BillType = GetTypeList();
RequestFormMaster = await _context.RequestFormMaster.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLAInformation = await _context.SLAInformation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
YTDRevenue = await _context.YTDRevenue.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ImplementationInfo = await _context.ImplementationInfo.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
ExistTags = RequestFormMaster.RequestStakeHolders;
var existtagstring = RequestFormMaster.RequestStakeHolders;
//after split the existtags, we could get the email list,
var emaillist = existtagstring.Split(",");
//we can query the database user table and get the username based on the selected email.
var existtags = _context.Users.Where(c => emaillist.Contains(c.EmailAddress)).Select(c => new ExistTags()
{
Name = c.FirstName + "" + c.LastName, // the full name, firstname + " " + lastname
Email = c.EmailAddress
}).ToList();
var jsonstring = JsonSerializer.Serialize(existtags);
ViewData["existtag"] = jsonstring;
if ((UserRole == "RoleB") && (RequestFormMaster.RequestSubmissionStatus != "Submitted"))
{
UserRole = "Submitted";
}
if ((UserRole == "RoleA" || UserRole == "RoleB") && (RequestFormMaster.RequestSubmissionStatus == "Submitted"))
{
UserRole = "Implementation";
}
return Page();
}
剃刀视图
<input type="hidden" id="total" value="1" />
<div class="col-1">
<label class="control-label mb-0">Bill Type</label>
<select id="DrpDwnBillType" asp-for="RequestingList[0].BillType" asp-items="@Model.BillType" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)">
<option value="">Please Select</option>
</select>
</div>
<div class="col-1">
<label class="control-label mb-0">Origin</label>
<input type="text" asp-for="RequestingList[0].Origin" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-1">
<label class="control-label mb-0">Destination</label>
<input type="text" asp-for="RequestingList[0].Destination" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-2">
<label class="control-label mb-0">Requested Rate</label>
<input type="text" asp-for="LanesRequestingList[0].RequestedRate" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-2">
<label class="control-label mb-0">Approval Level</label>
<input type="text" asp-for="RequestingList[0].ApprovalLevel" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-1">
<label class="control-label mb-0"></label><br />
<button id="addRow" class="btn btn-success" disabled="@(Model.UserRole != "RoleB"?true:false)"><i class="fas fa-plus" style="color:white;"></i></button>
</div>
错误页面
获取 Billtype 值
我的用户角色是定价本身。
在进行更改之前，我所有的下拉列表都工作正常，并且我能够访问该页面。如果您需要完整脚本，请告诉我。
还有一个 update.When 我继续调试模式，空引用异常将转到下一行。
嗨@Rena，
这是我的Edit.cshtml.cs
namespace SpecialLanePricing.Pages
{
public class RequestFormEditModel : PageModel
{
private readonly IWebHostEnvironment _env;
private readonly ApplicationDbContext _context;
public RequestFormEditModel(IWebHostEnvironment env, ApplicationDbContext applicationDbContext)
{
_env = env;
_context = applicationDbContext;
}
[BindProperty]
public RequestFormMaster RequestFormMaster { get; set; }
[BindProperty]
public ShipmentProfile ShipmentProfile { get; set; }
[BindProperty]
public RatesImplementation RatesImplementation { get; set; }
[BindProperty]
public SLAInformation SLAInformation { get; set; }
[BindProperty]
public SLPSummary SLPSummary { get; set; }
[BindProperty]
public YTDRevenue YTDRevenue { get; set; }
[BindProperty]
public ImplementationInfo ImplementationInfo { get; set; }
[BindProperty]
public LanesRequestingReduction LanesRequestingReduction { get; set; }
[BindProperty]
public List<LanesRequestingReduction> LanesRequestingReductionList { get;set;}
[BindProperty]
public RequestChatBox RequestChatBox { get; set; }
public RequestFormMaster RequestAlreadyExist { get; set; }
public string RequestID { get; set; }
public string DisableField { get; set; }
public string STCCode { get; set; }
public string PricingAssignee { get; set; }
public string ReadOnly { get; set; }
public SelectList RequestStatus { get; set; }
public SelectList Priority { get; set; }
public SelectList ActionForSS { get; set; }
public SelectList BillingCycle { get; set; }
public SelectList PaymentTerm { get; set; }
public SelectList RequestType { get; set; }
public SelectList BillingCurrency { get; set; }
public SelectList FTBExistingCustomer { get; set; }
public SelectList FTBLeadSource { get; set; }
public SelectList Competitors { get; set; }
public SelectList B2BByB2C { get; set; }
public SelectList ShipmentPieceType { get; set; }
public SelectList BaseContractOffer { get; set; }
public List<SelectListItem> Status { get; set; }
public SelectList SSExemptions { get; set; }
public SelectList BillType { get; set; }
public IList<RequestChatBox> ShowRequestChatBox { get; set; }
[BindProperty]
public List<IFormFile> ReqSupportingFiles { get; set; }
public string ErrorMessage { get; set; }
public string UserRole { get; set; }
public string ExistTags { get; set; }
public string DisabledField { get; set; }
public async Task<PageResult> OnGetAsync(string? RequestID)
{
UserRole = HttpContext.Session.GetString("userrole");
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
ActionForSS = new SelectList(_context.ActionForSalesSupport.OrderBy(e => e.ID), "ActionSS", "ActionSS");
BillingCycle = new SelectList(_context.BillingCycle.OrderBy(e => e.ID), "BillingCycles", "BillingCycles");
PaymentTerm = new SelectList(_context.PaymentTerm.OrderBy(e => e.ID), "PaymentTerms", "PaymentTerms");
BillingCurrency = new SelectList(_context.BillingCurrency.OrderBy(e => e.ID), "BillingCurrencies", "BillingCurrencies");
FTBExistingCustomer = new SelectList(_context.FTBExistingCustomer.OrderBy(e => e.ID), "FTBOrExist", "FTBOrExist");
FTBLeadSource = new SelectList(_context.FTBLeadSource.OrderBy(e => e.ID), "FTBLeadSources", "FTBLeadSources");
Competitors = new SelectList(_context.Competitors.OrderBy(e => e.ID), "Competitor", "Competitor");
B2BByB2C = new SelectList(_context.B2BbyB2C.OrderBy(e => e.ID), "BtoBBtoC", "BtoBBtoC");
ShipmentPieceType = new SelectList(_context.ShipmentPieceType.OrderBy(e => e.ID), "ShipmentPieceTypes", "ShipmentPieceTypes");
BaseContractOffer = new SelectList(_context.BaseContractOffer.OrderBy(e => e.ID), "BaseContractOffers", "BaseContractOffers");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
SSExemptions = new SelectList(_context.SSExemptions.OrderBy(e => e.ID), "SAndSExemptions", "SAndSExemptions");
BillType = GetTypeList();
RequestFormMaster = await _context.RequestFormMaster.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShipmentProfile = await _context.ShipmentProfile.FirstOrDefaultAsync(m => m.RequestID == RequestID);
RatesImplementation = await _context.RatesImplementation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLAInformation = await _context.SLAInformation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLPSummary = await _context.SLPSummary.FirstOrDefaultAsync(m => m.RequestID == RequestID);
YTDRevenue = await _context.YTDRevenue.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ImplementationInfo = await _context.ImplementationInfo.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
ExistTags = RequestFormMaster.RequestStakeHolders;
var existtagstring = RequestFormMaster.RequestStakeHolders;
//after split the existtags, we could get the email list,
var emaillist = existtagstring.Split(",");
//we can query the database user table and get the username based on the selected email.
var existtags = _context.Users.Where(c => emaillist.Contains(c.EmailAddress)).Select(c => new ExistTags()
{
Name = c.FirstName + "" + c.LastName, // the full name, firstname + " " + lastname
Email = c.EmailAddress
}).ToList();
var jsonstring = JsonSerializer.Serialize(existtags);
ViewData["existtag"] = jsonstring;
if ((UserRole == "Sales") && (RequestFormMaster.RequestSubmissionStatus != "Submitted"))
{
UserRole = "SalesSubmitted";
}
if ((UserRole == "Sales Support" || UserRole == "Sales") && (RequestFormMaster.RequestSubmissionStatus == "Submitted"))
{
UserRole = "RatesImplementation";
}
if (UserRole == "Pricing")
{
UserRole = "Pricing";
}
return Page();
}
public async Task<IActionResult> OnPostSubmitChatAsync(RequestChatBox RequestChatBox)
{
RequestChatBox.CommentedUser = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
RequestChatBox.UserEmail = HttpContext.Session.GetString("emailaddress");
RequestChatBox.LastModifiedTimeStamp = DateTime.Now;
RequestChatBox.Comments = RequestChatBox.Comments;
RequestChatBox.RequestID = RequestChatBox.RequestID;
_context.Entry(RequestChatBox).State = EntityState.Added;
await _context.SaveChangesAsync();
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestChatBox.RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
return new OkResult();
}
public async Task<IActionResult> OnPostSubmitAsync()
{
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
ActionForSS = new SelectList(_context.ActionForSalesSupport.OrderBy(e => e.ID), "ActionSS", "ActionSS");
BillingCycle = new SelectList(_context.BillingCycle.OrderBy(e => e.ID), "BillingCycles", "BillingCycles");
PaymentTerm = new SelectList(_context.PaymentTerm.OrderBy(e => e.ID), "PaymentTerms", "PaymentTerms");
BillingCurrency = new SelectList(_context.BillingCurrency.OrderBy(e => e.ID), "BillingCurrencies", "BillingCurrencies");
FTBExistingCustomer = new SelectList(_context.FTBExistingCustomer.OrderBy(e => e.ID), "FTBOrExist", "FTBOrExist");
FTBLeadSource = new SelectList(_context.FTBLeadSource.OrderBy(e => e.ID), "FTBLeadSources", "FTBLeadSources");
Competitors = new SelectList(_context.Competitors.OrderBy(e => e.ID), "Competitor", "Competitor");
B2BByB2C = new SelectList(_context.B2BbyB2C.OrderBy(e => e.ID), "BtoBBtoC", "BtoBBtoC");
ShipmentPieceType = new SelectList(_context.ShipmentPieceType.OrderBy(e => e.ID), "ShipmentPieceTypes", "ShipmentPieceTypes");
BaseContractOffer = new SelectList(_context.BaseContractOffer.OrderBy(e => e.ID), "BaseContractOffers", "BaseContractOffers");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
SSExemptions = new SelectList(_context.SSExemptions.OrderBy(e => e.ID), "SAndSExemptions", "SAndSExemptions");
BillType = new SelectList(_context.BillType.OrderBy(e => e.ID), "BillTypes", "BillTypes");
//RequestFormMaster.RequestID = RequestFormMaster.RequestID.Trim();
//RequestFormMaster.PricingAssignee = RequestFormMaster.PricingAssignee.Trim();
//RequestFormMaster.PricingAssigneeEmail = RequestFormMaster.PricingAssigneeEmail.Trim();
//RequestFormMaster.RequestStakeHolders = Request.Form["addedTags"];
if ((RequestFormMaster.Priority == "Priority “A” – 2 Business Days") || (RequestFormMaster.Priority == "Priority “B” – 4 Business Days"))
{
DateTime RequestDeadLine = Convert.ToDateTime(RequestFormMaster.RequestDeadLine);
RequestFormMaster.RequestDeadLine = RequestDeadLine;
}
else
{
RequestFormMaster.RequestDeadLine = RequestFormMaster.RequestDeadLine;
}
if ((RequestFormMaster.RequestStatus == "") || (RequestFormMaster.RequestStatus == null))
{
RequestFormMaster.ProgressBarStatus = "Requestor";
RequestFormMaster.ProgressBarCounter = 1;
}
else if ((RequestFormMaster.RequestStatus == "Pricing Review") || (RequestFormMaster.RequestStatus == "OMS Submission") || (RequestFormMaster.RequestStatus == "KIWI+ Submission") || (RequestFormMaster.RequestStatus == "KAP Analysis"))
{
RequestFormMaster.ProgressBarStatus = "Assignee";
RequestFormMaster.ProgressBarCounter = 2;
}
else if ((RequestFormMaster.RequestStatus == "Cross BU Alignment") || (RequestFormMaster.RequestStatus == "OARs Form Alignment"))
{
RequestFormMaster.ProgressBarStatus = "Other Functions";
RequestFormMaster.ProgressBarCounter = 3;
}
else if ((RequestFormMaster.RequestStatus == "Analysis Review") || (RequestFormMaster.RequestStatus == "Local TRB Review") || (RequestFormMaster.RequestStatus == "AP-TRB Review"))
{
RequestFormMaster.ProgressBarStatus = "Approver";
RequestFormMaster.ProgressBarCounter = 4;
}
else if ((RequestFormMaster.RequestStatus == "Approved by Pricing Executive") || (RequestFormMaster.RequestStatus == "Approved by Pricing Manager") || (RequestFormMaster.RequestStatus == "Approved Local-TRB") || (RequestFormMaster.RequestStatus == "Approved by AP-TRB") || (RequestFormMaster.RequestStatus == "Rejected") || (RequestFormMaster.RequestStatus == "Customer Acceptance & Implementation"))
{
RequestFormMaster.ProgressBarStatus = "Completed";
RequestFormMaster.ProgressBarCounter = 5;
}
else if ((RequestFormMaster.RequestStatus == "Implementation Approval (KIWI+)"))
{
RequestFormMaster.ProgressBarStatus = "Implemented";
RequestFormMaster.ProgressBarCounter = 5;
}
RequestFormMaster.LastModifiedBy = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
_context.Entry(RequestFormMaster).State = EntityState.Modified;
ShipmentProfile.RequestID = RequestFormMaster.RequestID;
ShipmentProfile.LastModifiedBy = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
ShipmentProfile.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(ShipmentProfile).State = EntityState.Modified;
RatesImplementation.RequestID = RequestFormMaster.RequestID;
RatesImplementation.OpportunityID = RequestFormMaster.OppurtunityID;
RatesImplementation.CompanyName = RequestFormMaster.CustomerName;
RatesImplementation.SiteID = RequestFormMaster.SiteID;
RatesImplementation.AGCMACCode = RequestFormMaster.AGCMACCode;
RatesImplementation.BillingCycle = RequestFormMaster.BillingCycleName;
RatesImplementation.PaymentTerms = RequestFormMaster.PaymentTermName;
RatesImplementation.ExemptionsSS = ShipmentProfile.SSExemptions;
RatesImplementation.AccountNumbers = RequestFormMaster.AccountsInScope;
RatesImplementation.LastModifiedTimestamp = DateTime.Now;
_context.Entry(RatesImplementation).State = EntityState.Modified;
SLAInformation.RequestID = RequestFormMaster.RequestID;
SLAInformation.SalesDateOfSubmission = DateTime.Now;
SLAInformation.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(SLAInformation).State = EntityState.Modified;
SLPSummary.RequestID = RequestFormMaster.RequestID;
SLPSummary.CustomerName = RequestFormMaster.CustomerName;
SLPSummary.Commodity = ShipmentProfile.Commodity;
SLPSummary.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(SLPSummary).State = EntityState.Modified;
YTDRevenue.RequestID = RequestFormMaster.RequestID;
YTDRevenue.PricingOwnership = RequestFormMaster.PricingAssignee;
YTDRevenue.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(YTDRevenue).State = EntityState.Modified;
ImplementationInfo.RequestID = RequestFormMaster.RequestID;
ImplementationInfo.CPAID = RequestFormMaster.CPAID;
ImplementationInfo.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(ImplementationInfo).State = EntityState.Modified;
if (LanesRequestingReductionList.Any())
{
for (var i = 0; i <= LanesRequestingReductionList.Count(); i++)
{
LanesRequestingReduction.RequestID = RequestFormMaster.RequestID;
LanesRequestingReduction.Counter = i;
_context.Entry(LanesRequestingReduction).State = EntityState.Added;
}
}
await _context.SaveChangesAsync();
TempData["ReqSubmitted"] = "Submitted";
var foldername = RequestFormMaster.RequestID.ToString();
var DirectoryPath = Path.Combine(_env.WebRootPath, "Documents", foldername);
if (!System.IO.Directory.Exists(DirectoryPath))
{
System.IO.Directory.CreateDirectory(DirectoryPath);
}
if (ReqSupportingFiles != null || ReqSupportingFiles.Count > 0)
{
int i = 0;
foreach (IFormFile upload in ReqSupportingFiles)
{
i++;
// Upload file to server folder
string ext = Path.GetExtension(upload.FileName).ToLower();
if ((ext == ".ppt") || (ext == ".pptx") || (ext == ".xls") || (ext == "xlsx"))
{
var filesave = Path.Combine(_env.WebRootPath, "Documents", foldername, i + "_" + upload.FileName);
using (var stream = System.IO.File.Create(filesave))
{
await upload.CopyToAsync(stream);
}
}
}
}
//SendEmailAsync();
//OnPostUploadFiles(fileData, RequestID);
return RedirectToPage("/RequestSummary");
//return Page();
}
public JsonResult OnGetSearchValue(string search)
{
List<Users> allsearch = new List<Users>();
if (!string.IsNullOrEmpty(search))
{
allsearch = _context.Users.Where(x => x.FirstName.Contains(search) || x.EmailAddress.Equals(search)).ToList();
}
return new JsonResult(allsearch);
}
public IActionResult OnGetDynamicTypeList()
{
return new JsonResult(GetTypeList());
}
public SelectList GetTypeList()
{
SelectList BillTypeValues = new SelectList(_context.BillType.OrderBy(e => e.ID), "BillTypes", "BillTypes");
return BillTypeValues;
}
}
}
谢谢，
蒂娜
将 RequestFormList 初始化为声明的一部分，然后它将永远不会为空：
public List<RequestForm> RequestFormList { get;set;} = new List<RequestForm>();
When i click on the Submit button its going to the handler ,but when
it reaches RequestFormList.Any(),throwing error. Understood its not
passing any value.
你需要改变两件事来达到你的要求：
- 模型绑定系统通过名称属性绑定 属性。
对于列表模型，名称应为 Model[index].propertyName。在您的情况下，名称应为：RequestFormList[index].propertyName 而不是 RequestForm.propertyName_index.
[BindProperty]只支持一个属性，如果要绑定PageModel中的所有属性，需要在每个[=61]中添加[BindProperty] =] 或将 [BindProperties] 添加到 PageModel:
[BindProperty]
public RequestForm RequestForm { get; set; }
[BindProperty]
public List<RequestForm> RequestFormList { get;set;}
或：
[BindProperties]
public class IndexModel : PageModel
{.....}
此外，您的html代码使用asp-for="RequestForm.RequestRate_0" ，但您的成功函数手动添加代码name="RequestForm.RequestedRate_'，它们的属性名称不相同.
您可以遵循完整的工作演示：
型号：
public class RequestForm
{
public string BillType { get; set; }
public string Origin { get; set; }
public string Destination { get; set; }
public string RequestRate { get; set; }
public string ApprovalLevel { get; set; }
}
页数：
@page
@model IndexModel
<form method="post">
<div id="newRow" class="form-row mt-2">
<input type="hidden" id="total" value="1" />
<div class="col-1">
<label class="control-label mb-0">Bill Type</label>
<select id="DrpDwnBillType" asp-for="RequestFormList[0].BillType" asp-items="@Model.BillType" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm">
<option value="">Please Select</option>
</select>
</div>
<div class="col-1">
<label class="control-label mb-0">Origin</label>
<input type="text" asp-for="RequestFormList[0].Origin" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-1">
<label class="control-label mb-0">Destination</label>
<input type="text" asp-for="RequestFormList[0].Destination" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-2">
<label class="control-label mb-0">Requested Rate</label>
<input type="text" asp-for="RequestFormList[0].RequestRate" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-2">
<label class="control-label mb-0">Approval Level</label>
<input type="text" asp-for="RequestFormList[0].ApprovalLevel" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-1">
<label class="control-label mb-0"></label><br />
<button id="addRow" class="btn btn-success" disabled="@(Model.UserRole != "Pricing"?true:false)"><i class="fas fa-plus" style="color:white;"></i></button>
</div>
</div>
<input type="submit" value="Post" />
</form>
页面中的 JS：
@section Scripts
{
<script>
$("#addRow").click(function () {
event.preventDefault();
var rowCount = parseInt($("#total").val());
rowCount++;
$("#total").val(rowCount);
$.ajax({
type: "Get",
url: "?handler=DynamicTypeList", //url depends on yourself...
success: function (data) {
//add new select element:
var newselect = '<select id="DrpDwnBillType" name="RequestFormList[' + (rowCount - 1) + '].BillType" class="form-control form-control-sm">'
newselect += '<option value="">Please Select</option>';
$.each(data, function (i, item) {
newselect += `<option value="${item.value}">${item.text}</option>`;
});
newselect += "</select>";
//generate the new form group
var html = '';
html += '<div id="inputRow" class="form-row mt-1">';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Bill Type</label >';
html += newselect;
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Origin</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].Origin" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Destination</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].Destination" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-2">';
html += '<label class="control-label mb-0" >Requested Rate</label >';
html += '<input type="text"name="RequestFormList[' + (rowCount - 1) + '].RequestedRate" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-2">';
html += '<label class="control-label mb-0" >Approval Level</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].ApprovalLevel" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0"></label><br />';
html += '<button id="removeRow" class="btn btn-danger"><i class="fas fa-trash" style="color:white;"></i></button>';
html += '</div>';
//html += '<input type="number" name="[' + (rowCount - 1) + '].Age" />';
//add more inputs here...
//html += '<button id="removeRow" type="button" class="btn btn-danger">Remove</button>';
html += '</div>';
$('#newRow').after(html);
},
error: function (response) {
alert(response.responseText);
}
});
});
$(document).on('click', '#removeRow', function () {
var rowCount = parseInt($("#total").val());
rowCount--;
$("#total").val(rowCount);
$(this).closest('#inputRow').remove();
});
</script>
}
页面模型：
public class IndexModel : PageModel
{
[BindProperty]
public RequestForm RequestForm { get; set; }
[BindProperty]
public List<RequestForm> RequestFormList { get; set; }
public List<SelectListItem> BillType { get; set; }
public string UserRole { get; set; } //update code here...
public IActionResult OnGet()
{
BillType = new List<SelectListItem>()
{
new SelectListItem(){Text="Bill1",Value="1"},
new SelectListItem(){Text="Bill2",Value="2"}
};
UserRole = "Pricing"; //update code here...
return Page();
}
public IActionResult OnGetDynamicTypeList()
{
var data = new List<SelectListItem>()
{
new SelectListItem(){Text="aa",Value="1"},
new SelectListItem(){Text="bb",Value="2"},
new SelectListItem(){Text="cc",Value="3"}
};
return new JsonResult(data);
}
public IActionResult OnPost()
{
//.....
}
}
结果：
我有一些动态生成的 fields.When 我正在向数据库中插入值，但无法在列表中获取值。它抛出空值异常。这是我的代码。
CSHTML.CS 文件
[BindProperty]
public RequestForm RequestForm { get; set; }
public List<RequestForm> RequestFormList { get;set;}
OnPost 方法
if(RequestFormList.Any())
{
for(var i=0; i<= RequestFormList.Count(); i++)
{
RequestForm.Counter = i;
_context.Entry(RequestForm).State = EntityState.Added;
}
}
当我单击“提交”按钮时，它会转到处理程序，但当它到达 RequestFormList.Any() 时，会抛出错误。理解它没有传递任何值。
已编辑**** **********
Onget 方法
public async Task<PageResult> OnGetAsync(string? RequestID)
{
UserRole = HttpContext.Session.GetString("userrole");
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
BillType = GetTypeList();
RequestFormMaster = await _context.RequestFormMaster.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLAInformation = await _context.SLAInformation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
YTDRevenue = await _context.YTDRevenue.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ImplementationInfo = await _context.ImplementationInfo.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
ExistTags = RequestFormMaster.RequestStakeHolders;
var existtagstring = RequestFormMaster.RequestStakeHolders;
//after split the existtags, we could get the email list,
var emaillist = existtagstring.Split(",");
//we can query the database user table and get the username based on the selected email.
var existtags = _context.Users.Where(c => emaillist.Contains(c.EmailAddress)).Select(c => new ExistTags()
{
Name = c.FirstName + "" + c.LastName, // the full name, firstname + " " + lastname
Email = c.EmailAddress
}).ToList();
var jsonstring = JsonSerializer.Serialize(existtags);
ViewData["existtag"] = jsonstring;
if ((UserRole == "RoleB") && (RequestFormMaster.RequestSubmissionStatus != "Submitted"))
{
UserRole = "Submitted";
}
if ((UserRole == "RoleA" || UserRole == "RoleB") && (RequestFormMaster.RequestSubmissionStatus == "Submitted"))
{
UserRole = "Implementation";
}
return Page();
}
剃刀视图
<input type="hidden" id="total" value="1" />
<div class="col-1">
<label class="control-label mb-0">Bill Type</label>
<select id="DrpDwnBillType" asp-for="RequestingList[0].BillType" asp-items="@Model.BillType" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)">
<option value="">Please Select</option>
</select>
</div>
<div class="col-1">
<label class="control-label mb-0">Origin</label>
<input type="text" asp-for="RequestingList[0].Origin" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-1">
<label class="control-label mb-0">Destination</label>
<input type="text" asp-for="RequestingList[0].Destination" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-2">
<label class="control-label mb-0">Requested Rate</label>
<input type="text" asp-for="LanesRequestingList[0].RequestedRate" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-2">
<label class="control-label mb-0">Approval Level</label>
<input type="text" asp-for="RequestingList[0].ApprovalLevel" class="form-control form-control-sm" disabled="@(Model.UserRole != "RoleB"?true:false)" />
</div>
<div class="col-1">
<label class="control-label mb-0"></label><br />
<button id="addRow" class="btn btn-success" disabled="@(Model.UserRole != "RoleB"?true:false)"><i class="fas fa-plus" style="color:white;"></i></button>
</div>
错误页面
获取 Billtype 值
我的用户角色是定价本身。 在进行更改之前，我所有的下拉列表都工作正常，并且我能够访问该页面。如果您需要完整脚本，请告诉我。
还有一个 update.When 我继续调试模式，空引用异常将转到下一行。
嗨@Rena，
这是我的Edit.cshtml.cs
namespace SpecialLanePricing.Pages
{
public class RequestFormEditModel : PageModel
{
private readonly IWebHostEnvironment _env;
private readonly ApplicationDbContext _context;
public RequestFormEditModel(IWebHostEnvironment env, ApplicationDbContext applicationDbContext)
{
_env = env;
_context = applicationDbContext;
}
[BindProperty]
public RequestFormMaster RequestFormMaster { get; set; }
[BindProperty]
public ShipmentProfile ShipmentProfile { get; set; }
[BindProperty]
public RatesImplementation RatesImplementation { get; set; }
[BindProperty]
public SLAInformation SLAInformation { get; set; }
[BindProperty]
public SLPSummary SLPSummary { get; set; }
[BindProperty]
public YTDRevenue YTDRevenue { get; set; }
[BindProperty]
public ImplementationInfo ImplementationInfo { get; set; }
[BindProperty]
public LanesRequestingReduction LanesRequestingReduction { get; set; }
[BindProperty]
public List<LanesRequestingReduction> LanesRequestingReductionList { get;set;}
[BindProperty]
public RequestChatBox RequestChatBox { get; set; }
public RequestFormMaster RequestAlreadyExist { get; set; }
public string RequestID { get; set; }
public string DisableField { get; set; }
public string STCCode { get; set; }
public string PricingAssignee { get; set; }
public string ReadOnly { get; set; }
public SelectList RequestStatus { get; set; }
public SelectList Priority { get; set; }
public SelectList ActionForSS { get; set; }
public SelectList BillingCycle { get; set; }
public SelectList PaymentTerm { get; set; }
public SelectList RequestType { get; set; }
public SelectList BillingCurrency { get; set; }
public SelectList FTBExistingCustomer { get; set; }
public SelectList FTBLeadSource { get; set; }
public SelectList Competitors { get; set; }
public SelectList B2BByB2C { get; set; }
public SelectList ShipmentPieceType { get; set; }
public SelectList BaseContractOffer { get; set; }
public List<SelectListItem> Status { get; set; }
public SelectList SSExemptions { get; set; }
public SelectList BillType { get; set; }
public IList<RequestChatBox> ShowRequestChatBox { get; set; }
[BindProperty]
public List<IFormFile> ReqSupportingFiles { get; set; }
public string ErrorMessage { get; set; }
public string UserRole { get; set; }
public string ExistTags { get; set; }
public string DisabledField { get; set; }
public async Task<PageResult> OnGetAsync(string? RequestID)
{
UserRole = HttpContext.Session.GetString("userrole");
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
ActionForSS = new SelectList(_context.ActionForSalesSupport.OrderBy(e => e.ID), "ActionSS", "ActionSS");
BillingCycle = new SelectList(_context.BillingCycle.OrderBy(e => e.ID), "BillingCycles", "BillingCycles");
PaymentTerm = new SelectList(_context.PaymentTerm.OrderBy(e => e.ID), "PaymentTerms", "PaymentTerms");
BillingCurrency = new SelectList(_context.BillingCurrency.OrderBy(e => e.ID), "BillingCurrencies", "BillingCurrencies");
FTBExistingCustomer = new SelectList(_context.FTBExistingCustomer.OrderBy(e => e.ID), "FTBOrExist", "FTBOrExist");
FTBLeadSource = new SelectList(_context.FTBLeadSource.OrderBy(e => e.ID), "FTBLeadSources", "FTBLeadSources");
Competitors = new SelectList(_context.Competitors.OrderBy(e => e.ID), "Competitor", "Competitor");
B2BByB2C = new SelectList(_context.B2BbyB2C.OrderBy(e => e.ID), "BtoBBtoC", "BtoBBtoC");
ShipmentPieceType = new SelectList(_context.ShipmentPieceType.OrderBy(e => e.ID), "ShipmentPieceTypes", "ShipmentPieceTypes");
BaseContractOffer = new SelectList(_context.BaseContractOffer.OrderBy(e => e.ID), "BaseContractOffers", "BaseContractOffers");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
SSExemptions = new SelectList(_context.SSExemptions.OrderBy(e => e.ID), "SAndSExemptions", "SAndSExemptions");
BillType = GetTypeList();
RequestFormMaster = await _context.RequestFormMaster.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShipmentProfile = await _context.ShipmentProfile.FirstOrDefaultAsync(m => m.RequestID == RequestID);
RatesImplementation = await _context.RatesImplementation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLAInformation = await _context.SLAInformation.FirstOrDefaultAsync(m => m.RequestID == RequestID);
SLPSummary = await _context.SLPSummary.FirstOrDefaultAsync(m => m.RequestID == RequestID);
YTDRevenue = await _context.YTDRevenue.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ImplementationInfo = await _context.ImplementationInfo.FirstOrDefaultAsync(m => m.RequestID == RequestID);
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
ExistTags = RequestFormMaster.RequestStakeHolders;
var existtagstring = RequestFormMaster.RequestStakeHolders;
//after split the existtags, we could get the email list,
var emaillist = existtagstring.Split(",");
//we can query the database user table and get the username based on the selected email.
var existtags = _context.Users.Where(c => emaillist.Contains(c.EmailAddress)).Select(c => new ExistTags()
{
Name = c.FirstName + "" + c.LastName, // the full name, firstname + " " + lastname
Email = c.EmailAddress
}).ToList();
var jsonstring = JsonSerializer.Serialize(existtags);
ViewData["existtag"] = jsonstring;
if ((UserRole == "Sales") && (RequestFormMaster.RequestSubmissionStatus != "Submitted"))
{
UserRole = "SalesSubmitted";
}
if ((UserRole == "Sales Support" || UserRole == "Sales") && (RequestFormMaster.RequestSubmissionStatus == "Submitted"))
{
UserRole = "RatesImplementation";
}
if (UserRole == "Pricing")
{
UserRole = "Pricing";
}
return Page();
}
public async Task<IActionResult> OnPostSubmitChatAsync(RequestChatBox RequestChatBox)
{
RequestChatBox.CommentedUser = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
RequestChatBox.UserEmail = HttpContext.Session.GetString("emailaddress");
RequestChatBox.LastModifiedTimeStamp = DateTime.Now;
RequestChatBox.Comments = RequestChatBox.Comments;
RequestChatBox.RequestID = RequestChatBox.RequestID;
_context.Entry(RequestChatBox).State = EntityState.Added;
await _context.SaveChangesAsync();
ShowRequestChatBox = _context.RequestChatBox.Where(c => c.RequestID == RequestChatBox.RequestID).OrderBy(c => c.LastModifiedTimeStamp).AsNoTracking().ToList();
return new OkResult();
}
public async Task<IActionResult> OnPostSubmitAsync()
{
RequestStatus = new SelectList(_context.RequestStatus.OrderBy(e => e.ID), "RequestStatusValues", "RequestStatusValues");
RequestType = new SelectList(_context.RequestType.OrderBy(e => e.ID), "ReqType", "ReqType");
Priority = new SelectList(_context.Priority.OrderBy(e => e.ID), "PriorityValues", "PriorityValues");
ActionForSS = new SelectList(_context.ActionForSalesSupport.OrderBy(e => e.ID), "ActionSS", "ActionSS");
BillingCycle = new SelectList(_context.BillingCycle.OrderBy(e => e.ID), "BillingCycles", "BillingCycles");
PaymentTerm = new SelectList(_context.PaymentTerm.OrderBy(e => e.ID), "PaymentTerms", "PaymentTerms");
BillingCurrency = new SelectList(_context.BillingCurrency.OrderBy(e => e.ID), "BillingCurrencies", "BillingCurrencies");
FTBExistingCustomer = new SelectList(_context.FTBExistingCustomer.OrderBy(e => e.ID), "FTBOrExist", "FTBOrExist");
FTBLeadSource = new SelectList(_context.FTBLeadSource.OrderBy(e => e.ID), "FTBLeadSources", "FTBLeadSources");
Competitors = new SelectList(_context.Competitors.OrderBy(e => e.ID), "Competitor", "Competitor");
B2BByB2C = new SelectList(_context.B2BbyB2C.OrderBy(e => e.ID), "BtoBBtoC", "BtoBBtoC");
ShipmentPieceType = new SelectList(_context.ShipmentPieceType.OrderBy(e => e.ID), "ShipmentPieceTypes", "ShipmentPieceTypes");
BaseContractOffer = new SelectList(_context.BaseContractOffer.OrderBy(e => e.ID), "BaseContractOffers", "BaseContractOffers");
Status = new List<SelectListItem> {
new SelectListItem { Value = "Yes", Text = "Yes" },
new SelectListItem { Value = "No", Text = "No" }
};
SSExemptions = new SelectList(_context.SSExemptions.OrderBy(e => e.ID), "SAndSExemptions", "SAndSExemptions");
BillType = new SelectList(_context.BillType.OrderBy(e => e.ID), "BillTypes", "BillTypes");
//RequestFormMaster.RequestID = RequestFormMaster.RequestID.Trim();
//RequestFormMaster.PricingAssignee = RequestFormMaster.PricingAssignee.Trim();
//RequestFormMaster.PricingAssigneeEmail = RequestFormMaster.PricingAssigneeEmail.Trim();
//RequestFormMaster.RequestStakeHolders = Request.Form["addedTags"];
if ((RequestFormMaster.Priority == "Priority “A” – 2 Business Days") || (RequestFormMaster.Priority == "Priority “B” – 4 Business Days"))
{
DateTime RequestDeadLine = Convert.ToDateTime(RequestFormMaster.RequestDeadLine);
RequestFormMaster.RequestDeadLine = RequestDeadLine;
}
else
{
RequestFormMaster.RequestDeadLine = RequestFormMaster.RequestDeadLine;
}
if ((RequestFormMaster.RequestStatus == "") || (RequestFormMaster.RequestStatus == null))
{
RequestFormMaster.ProgressBarStatus = "Requestor";
RequestFormMaster.ProgressBarCounter = 1;
}
else if ((RequestFormMaster.RequestStatus == "Pricing Review") || (RequestFormMaster.RequestStatus == "OMS Submission") || (RequestFormMaster.RequestStatus == "KIWI+ Submission") || (RequestFormMaster.RequestStatus == "KAP Analysis"))
{
RequestFormMaster.ProgressBarStatus = "Assignee";
RequestFormMaster.ProgressBarCounter = 2;
}
else if ((RequestFormMaster.RequestStatus == "Cross BU Alignment") || (RequestFormMaster.RequestStatus == "OARs Form Alignment"))
{
RequestFormMaster.ProgressBarStatus = "Other Functions";
RequestFormMaster.ProgressBarCounter = 3;
}
else if ((RequestFormMaster.RequestStatus == "Analysis Review") || (RequestFormMaster.RequestStatus == "Local TRB Review") || (RequestFormMaster.RequestStatus == "AP-TRB Review"))
{
RequestFormMaster.ProgressBarStatus = "Approver";
RequestFormMaster.ProgressBarCounter = 4;
}
else if ((RequestFormMaster.RequestStatus == "Approved by Pricing Executive") || (RequestFormMaster.RequestStatus == "Approved by Pricing Manager") || (RequestFormMaster.RequestStatus == "Approved Local-TRB") || (RequestFormMaster.RequestStatus == "Approved by AP-TRB") || (RequestFormMaster.RequestStatus == "Rejected") || (RequestFormMaster.RequestStatus == "Customer Acceptance & Implementation"))
{
RequestFormMaster.ProgressBarStatus = "Completed";
RequestFormMaster.ProgressBarCounter = 5;
}
else if ((RequestFormMaster.RequestStatus == "Implementation Approval (KIWI+)"))
{
RequestFormMaster.ProgressBarStatus = "Implemented";
RequestFormMaster.ProgressBarCounter = 5;
}
RequestFormMaster.LastModifiedBy = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
_context.Entry(RequestFormMaster).State = EntityState.Modified;
ShipmentProfile.RequestID = RequestFormMaster.RequestID;
ShipmentProfile.LastModifiedBy = HttpContext.Session.GetString("firstname") + " " + HttpContext.Session.GetString("lastname");
ShipmentProfile.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(ShipmentProfile).State = EntityState.Modified;
RatesImplementation.RequestID = RequestFormMaster.RequestID;
RatesImplementation.OpportunityID = RequestFormMaster.OppurtunityID;
RatesImplementation.CompanyName = RequestFormMaster.CustomerName;
RatesImplementation.SiteID = RequestFormMaster.SiteID;
RatesImplementation.AGCMACCode = RequestFormMaster.AGCMACCode;
RatesImplementation.BillingCycle = RequestFormMaster.BillingCycleName;
RatesImplementation.PaymentTerms = RequestFormMaster.PaymentTermName;
RatesImplementation.ExemptionsSS = ShipmentProfile.SSExemptions;
RatesImplementation.AccountNumbers = RequestFormMaster.AccountsInScope;
RatesImplementation.LastModifiedTimestamp = DateTime.Now;
_context.Entry(RatesImplementation).State = EntityState.Modified;
SLAInformation.RequestID = RequestFormMaster.RequestID;
SLAInformation.SalesDateOfSubmission = DateTime.Now;
SLAInformation.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(SLAInformation).State = EntityState.Modified;
SLPSummary.RequestID = RequestFormMaster.RequestID;
SLPSummary.CustomerName = RequestFormMaster.CustomerName;
SLPSummary.Commodity = ShipmentProfile.Commodity;
SLPSummary.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(SLPSummary).State = EntityState.Modified;
YTDRevenue.RequestID = RequestFormMaster.RequestID;
YTDRevenue.PricingOwnership = RequestFormMaster.PricingAssignee;
YTDRevenue.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(YTDRevenue).State = EntityState.Modified;
ImplementationInfo.RequestID = RequestFormMaster.RequestID;
ImplementationInfo.CPAID = RequestFormMaster.CPAID;
ImplementationInfo.LastModifiedTimeStamp = DateTime.Now;
_context.Entry(ImplementationInfo).State = EntityState.Modified;
if (LanesRequestingReductionList.Any())
{
for (var i = 0; i <= LanesRequestingReductionList.Count(); i++)
{
LanesRequestingReduction.RequestID = RequestFormMaster.RequestID;
LanesRequestingReduction.Counter = i;
_context.Entry(LanesRequestingReduction).State = EntityState.Added;
}
}
await _context.SaveChangesAsync();
TempData["ReqSubmitted"] = "Submitted";
var foldername = RequestFormMaster.RequestID.ToString();
var DirectoryPath = Path.Combine(_env.WebRootPath, "Documents", foldername);
if (!System.IO.Directory.Exists(DirectoryPath))
{
System.IO.Directory.CreateDirectory(DirectoryPath);
}
if (ReqSupportingFiles != null || ReqSupportingFiles.Count > 0)
{
int i = 0;
foreach (IFormFile upload in ReqSupportingFiles)
{
i++;
// Upload file to server folder
string ext = Path.GetExtension(upload.FileName).ToLower();
if ((ext == ".ppt") || (ext == ".pptx") || (ext == ".xls") || (ext == "xlsx"))
{
var filesave = Path.Combine(_env.WebRootPath, "Documents", foldername, i + "_" + upload.FileName);
using (var stream = System.IO.File.Create(filesave))
{
await upload.CopyToAsync(stream);
}
}
}
}
//SendEmailAsync();
//OnPostUploadFiles(fileData, RequestID);
return RedirectToPage("/RequestSummary");
//return Page();
}
public JsonResult OnGetSearchValue(string search)
{
List<Users> allsearch = new List<Users>();
if (!string.IsNullOrEmpty(search))
{
allsearch = _context.Users.Where(x => x.FirstName.Contains(search) || x.EmailAddress.Equals(search)).ToList();
}
return new JsonResult(allsearch);
}
public IActionResult OnGetDynamicTypeList()
{
return new JsonResult(GetTypeList());
}
public SelectList GetTypeList()
{
SelectList BillTypeValues = new SelectList(_context.BillType.OrderBy(e => e.ID), "BillTypes", "BillTypes");
return BillTypeValues;
}
}
}
谢谢， 蒂娜
将 RequestFormList 初始化为声明的一部分，然后它将永远不会为空：
public List<RequestForm> RequestFormList { get;set;} = new List<RequestForm>();
When i click on the Submit button its going to the handler ,but when it reaches RequestFormList.Any(),throwing error. Understood its not passing any value.
你需要改变两件事来达到你的要求：
- 模型绑定系统通过名称属性绑定 属性。
对于列表模型，名称应为 Model[index].propertyName。在您的情况下，名称应为：RequestFormList[index].propertyName 而不是 RequestForm.propertyName_index.
[BindProperty]只支持一个属性，如果要绑定PageModel中的所有属性，需要在每个[=61]中添加[BindProperty]=] 或将[BindProperties]添加到 PageModel:[BindProperty] public RequestForm RequestForm { get; set; } [BindProperty] public List<RequestForm> RequestFormList { get;set;}或：
[BindProperties] public class IndexModel : PageModel {.....}
此外，您的html代码使用asp-for="RequestForm.RequestRate_0" ，但您的成功函数手动添加代码name="RequestForm.RequestedRate_'，它们的属性名称不相同.
您可以遵循完整的工作演示：
型号：
public class RequestForm
{
public string BillType { get; set; }
public string Origin { get; set; }
public string Destination { get; set; }
public string RequestRate { get; set; }
public string ApprovalLevel { get; set; }
}
页数：
@page
@model IndexModel
<form method="post">
<div id="newRow" class="form-row mt-2">
<input type="hidden" id="total" value="1" />
<div class="col-1">
<label class="control-label mb-0">Bill Type</label>
<select id="DrpDwnBillType" asp-for="RequestFormList[0].BillType" asp-items="@Model.BillType" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm">
<option value="">Please Select</option>
</select>
</div>
<div class="col-1">
<label class="control-label mb-0">Origin</label>
<input type="text" asp-for="RequestFormList[0].Origin" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-1">
<label class="control-label mb-0">Destination</label>
<input type="text" asp-for="RequestFormList[0].Destination" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-2">
<label class="control-label mb-0">Requested Rate</label>
<input type="text" asp-for="RequestFormList[0].RequestRate" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-2">
<label class="control-label mb-0">Approval Level</label>
<input type="text" asp-for="RequestFormList[0].ApprovalLevel" disabled="@(Model.UserRole != "Pricing"?true:false)" class="form-control form-control-sm" />
</div>
<div class="col-1">
<label class="control-label mb-0"></label><br />
<button id="addRow" class="btn btn-success" disabled="@(Model.UserRole != "Pricing"?true:false)"><i class="fas fa-plus" style="color:white;"></i></button>
</div>
</div>
<input type="submit" value="Post" />
</form>
页面中的 JS：
@section Scripts
{
<script>
$("#addRow").click(function () {
event.preventDefault();
var rowCount = parseInt($("#total").val());
rowCount++;
$("#total").val(rowCount);
$.ajax({
type: "Get",
url: "?handler=DynamicTypeList", //url depends on yourself...
success: function (data) {
//add new select element:
var newselect = '<select id="DrpDwnBillType" name="RequestFormList[' + (rowCount - 1) + '].BillType" class="form-control form-control-sm">'
newselect += '<option value="">Please Select</option>';
$.each(data, function (i, item) {
newselect += `<option value="${item.value}">${item.text}</option>`;
});
newselect += "</select>";
//generate the new form group
var html = '';
html += '<div id="inputRow" class="form-row mt-1">';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Bill Type</label >';
html += newselect;
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Origin</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].Origin" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0" >Destination</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].Destination" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-2">';
html += '<label class="control-label mb-0" >Requested Rate</label >';
html += '<input type="text"name="RequestFormList[' + (rowCount - 1) + '].RequestedRate" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-2">';
html += '<label class="control-label mb-0" >Approval Level</label >';
html += '<input type="text" name="RequestFormList[' + (rowCount - 1) + '].ApprovalLevel" class="form-control form-control-sm" />';
html += '</div >';
html += '<div class="col-1">';
html += '<label class="control-label mb-0"></label><br />';
html += '<button id="removeRow" class="btn btn-danger"><i class="fas fa-trash" style="color:white;"></i></button>';
html += '</div>';
//html += '<input type="number" name="[' + (rowCount - 1) + '].Age" />';
//add more inputs here...
//html += '<button id="removeRow" type="button" class="btn btn-danger">Remove</button>';
html += '</div>';
$('#newRow').after(html);
},
error: function (response) {
alert(response.responseText);
}
});
});
$(document).on('click', '#removeRow', function () {
var rowCount = parseInt($("#total").val());
rowCount--;
$("#total").val(rowCount);
$(this).closest('#inputRow').remove();
});
</script>
}
页面模型：
public class IndexModel : PageModel
{
[BindProperty]
public RequestForm RequestForm { get; set; }
[BindProperty]
public List<RequestForm> RequestFormList { get; set; }
public List<SelectListItem> BillType { get; set; }
public string UserRole { get; set; } //update code here...
public IActionResult OnGet()
{
BillType = new List<SelectListItem>()
{
new SelectListItem(){Text="Bill1",Value="1"},
new SelectListItem(){Text="Bill2",Value="2"}
};
UserRole = "Pricing"; //update code here...
return Page();
}
public IActionResult OnGetDynamicTypeList()
{
var data = new List<SelectListItem>()
{
new SelectListItem(){Text="aa",Value="1"},
new SelectListItem(){Text="bb",Value="2"},
new SelectListItem(){Text="cc",Value="3"}
};
return new JsonResult(data);
}
public IActionResult OnPost()
{
//.....
}
}
结果：