使用 .Net MVC 和日期范围过滤器从数据库导出 Excel 中的数据

Question

我正在创建一个简单的票务工具。我正在开发一个函数，我可以应用日期范围格式从数据库中导出数据。

使用我创建的代码，只有行被导出，而不是视图结果。请查看以下代码并帮助解决此问题。

所有票证视图

@using (Html.BeginForm("Filter", "Ticket", FormMethod.Post))
{
    <input type="datetime" name="start" id="start" />
    <input type="datetime" name="end" id="end" />
    <input type="submit"/>
}

过滤器控制器显示 2 个日期之间的数据

public ActionResult Filter(DateTime start, DateTime end)
        {
            using (Db db = new Db())
            {
                //Ticket dto = db.Tickets.Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).FirstOrDefault();

                var filterTicker = db.Tickets
            .Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).ToList();


                return View(filterTicker);
            }

        }

下载和导出数据的代码

public FileContentResult Download(Ticket model)
        {
            //Ticket model = new Ticket();

            var fileDownloadName = String.Format("FileName.xlsx");
            const string contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";


            // Pass your ef data to method
            using (Db db = new Db())
            {
                var start = model.EscalatedOn;
                var end = model.EscalatedOn;

                ExcelPackage package = GenerateExcelFile(db.Tickets.Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).ToList());


                var fsr = new FileContentResult(package.GetAsByteArray(), contentType);
                fsr.FileDownloadName = fileDownloadName;

                return fsr;
            }
        }

        private static ExcelPackage GenerateExcelFile(IEnumerable<Ticket> datasource)
        {

            ExcelPackage pck = new ExcelPackage();

            //Create the worksheet 
            ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Sheet 1");

            // Sets Headers
            ws.Cells[1, 1].Value = "Record Number";
            ws.Cells[1, 2].Value = "Reviewer";
            ws.Cells[1, 3].Value = "Resource";
            ws.Cells[1, 4].Value = "Ticket Number";
            ws.Cells[1, 5].Value = "Scenario";
            ws.Cells[1, 6].Value = "Status";
            //ws.Cells[1, 7].Value = "Escalated";
            ws.Cells[1, 7].Value = "SLA Status";
            ws.Cells[1, 8].Value = "Escalated On";
            ws.Cells[1, 9].Value = "Was This Legit Esc";
            ws.Cells[1, 10].Value = "Escalation Reason";
            ws.Cells[1, 11].Value = "Can we de-escalate in future?";
            ws.Cells[1, 12].Value = "How can we de-escalate?";
            ws.Cells[1, 13].Value = "Username";

            // Inserts Data
            for (int i = 0; i < datasource.Count(); i++)
            {
                ws.Cells[i + 2, 1].Value = datasource.ElementAt(i).RecNo;
                ws.Cells[i + 2, 2].Value = datasource.ElementAt(i).Reviewer;
                ws.Cells[i + 2, 3].Value = datasource.ElementAt(i).Resource;
                ws.Cells[i + 2, 4].Value = datasource.ElementAt(i).Number;
                ws.Cells[i + 2, 5].Value = datasource.ElementAt(i).Scenario;
                ws.Cells[i + 2, 6].Value = datasource.ElementAt(i).Status;
                //ws.Cells[i + 2, 7].Value = datasource.ElementAt(i).Escalated;
                ws.Cells[i + 2, 7].Value = datasource.ElementAt(i).SLAStatus;
                ws.Cells[i + 2, 8].Value = datasource.ElementAt(i).EscalatedOn;
                ws.Cells[i + 2, 9].Value = datasource.ElementAt(i).WasThisLegitEsc;
                ws.Cells[i + 2, 10].Value = datasource.ElementAt(i).EscalationReason;
                ws.Cells[i + 2, 11].Value = datasource.ElementAt(i).DeEscalate;
                ws.Cells[i + 2, 12].Value = datasource.ElementAt(i).HowCanWeDeEscalate;
                ws.Cells[i + 2, 13].Value = datasource.ElementAt(i).Username;
            }

            // Format Header of Table
            using (ExcelRange rng = ws.Cells["A1:M1"])
            {

                rng.Style.Font.Bold = true;
                rng.Style.Fill.PatternType = ExcelFillStyle.Solid; //Set Pattern for the background to Solid 
                rng.Style.Fill.BackgroundColor.SetColor(Color.Gold); //Set color to DarkGray 
                rng.Style.Font.Color.SetColor(Color.Black);
            }
            return pck;
        }

过滤视图

@model IEnumerable<TicketTool.Models.VM.Ticket>

@{
    ViewBag.Title = "Filter";
}

<h2>Filter</h2>

<a href="@Url.Action("Download","Ticket")" class="btn btn-sm btn-info">Export</a>

<table class="table">
    <tr><th>
        Ticket Number
        </th>
    <th>
        Escalated On
    </th>
        <th></th>
    </tr>

@foreach (var item in Model) {
    <tr>
        
        <td>
            @Html.DisplayFor(modelItem => item.Number)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.EscalatedOn)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.CaseId }) |
            @Html.ActionLink("Details", "Details", new { id=item.CaseId }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.CaseId })
        </td>
    </tr>
}

</table>

非常感谢对此的任何帮助

Answer 1

在您的过滤器操作中使用 ViewBag

public ActionResult Filter(DateTime start, DateTime end)
    {
        using (Db db = new Db())
        {

            var filterTicker = db.Tickets
        .Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).ToList();


            ViewBag.START = start;
            ViewBag.END = end;
            return View(filterTicker);
        }

    }

然后在过滤视图中

<a href="@Url.Action("Download", "Ticket",new {start = ViewBag.START , end = ViewBag.END })" class="btn btn-sm btn-info">Export</a>

最后进入下载操作

public FileContentResult Download(Ticket model,DateTime start, DateTime end)

Answer 2

这是对我有用的解决方案

所有门票查看

{
    <input type="datetime" name="start" id="start" />
    <input type="datetime" name="end" id="end" />
    <input type="submit"/>
}

过滤控制器以显示 2 个日期之间的数据

 public ActionResult Filter(DateTime start, DateTime end)
        {
            var st = start;
            var en = end;

            using (Db db = new Db())
            {

                var filterTicket = db.Tickets
            .Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).ToList();

                ViewBag.START = st;
                ViewBag.END = en;

                return View(filterTicket);
            }

        }

3)下载和导出数据的代码

public FileContentResult Download(DateTime start, DateTime end)
        {

            var fileDownloadName = String.Format("FileName.xlsx");
            const string contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";


            // Pass your ef data to method


            ExcelPackage package = GenerateExcelFile(db.Tickets.Where(x => x.EscalatedOn >= start && x.EscalatedOn <= end).ToList());


            var fsr = new FileContentResult(package.GetAsByteArray(), contentType);
                fsr.FileDownloadName = fileDownloadName;

                return fsr;
            
        }

        private static ExcelPackage GenerateExcelFile(IEnumerable<Ticket> datasource)
        {

            ExcelPackage pck = new ExcelPackage();

            //Create the worksheet 
            ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Sheet 1");

            // Sets Headers
            ws.Cells[1, 1].Value = "Record Number";
            ws.Cells[1, 2].Value = "Reviewer";
            ws.Cells[1, 3].Value = "Resource";
            ws.Cells[1, 4].Value = "Ticket Number";
            ws.Cells[1, 5].Value = "Scenario";
            ws.Cells[1, 6].Value = "Status";
            //ws.Cells[1, 7].Value = "Escalated";
            ws.Cells[1, 7].Value = "SLA Status";
            ws.Cells[1, 8].Value = "Escalated On";
            ws.Cells[1, 9].Value = "Was This Legit Esc";
            ws.Cells[1, 10].Value = "Escalation Reason";
            ws.Cells[1, 11].Value = "Can we de-escalate in future?";
            ws.Cells[1, 12].Value = "How can we de-escalate?";
            ws.Cells[1, 13].Value = "Username";

            // Inserts Data
            for (int i = 0; i < datasource.Count(); i++)
            {
                ws.Cells[i + 2, 1].Value = datasource.ElementAt(i).RecNo;
                ws.Cells[i + 2, 2].Value = datasource.ElementAt(i).Reviewer;
                ws.Cells[i + 2, 3].Value = datasource.ElementAt(i).Resource;
                ws.Cells[i + 2, 4].Value = datasource.ElementAt(i).Number;
                ws.Cells[i + 2, 5].Value = datasource.ElementAt(i).Scenario;
                ws.Cells[i + 2, 6].Value = datasource.ElementAt(i).Status;
                //ws.Cells[i + 2, 7].Value = datasource.ElementAt(i).Escalated;
                ws.Cells[i + 2, 7].Value = datasource.ElementAt(i).SLAStatus;
                ws.Cells[i + 2, 8].Value = datasource.ElementAt(i).EscalatedOn;
                ws.Cells[i + 2, 9].Value = datasource.ElementAt(i).WasThisLegitEsc;
                ws.Cells[i + 2, 10].Value = datasource.ElementAt(i).EscalationReason;
                ws.Cells[i + 2, 11].Value = datasource.ElementAt(i).DeEscalate;
                ws.Cells[i + 2, 12].Value = datasource.ElementAt(i).HowCanWeDeEscalate;
                ws.Cells[i + 2, 13].Value = datasource.ElementAt(i).Username;
            }

            // Format Header of Table
            using (ExcelRange rng = ws.Cells["A1:M1"])
            {

                rng.Style.Font.Bold = true;
                rng.Style.Fill.PatternType = ExcelFillStyle.Solid; //Set Pattern for the background to Solid 
                rng.Style.Fill.BackgroundColor.SetColor(Color.Gold); //Set color to DarkGray 
                rng.Style.Font.Color.SetColor(Color.Black);
            }
            return pck;
        }

然后在过滤器视图中

<a href="@Url.Action("Download", "Ticket",new {start = ViewBag.START , end = ViewBag.END })" class="btn btn-sm btn-info">Export</a>

这对我很有用

使用 .Net MVC 和日期范围过滤器从数据库导出 Excel 中的数据

Export Data in Excel from DB using .Net MVC and Date Range filter

c#

excel

asp.net-mvc

asp.net-mvc-4

razor