尝试使用 ID 值获取选中的复选框值

Question

下面是型号

public class M_ProjectType
{
    public Int16 ProjectTypeID { get; set; }
    public String ProjectType { get; set; }
    public Boolean IsActive { get; set; }
    public Decimal Cost { get; set; }
    public String Description { get; set; }
    public Boolean IsChecked { get; set; }
}

下面是视图模型

public class VM_Project
{
    public string[] SkillID { get; set; }

    public List<M_ProjectType> ProjectType { get; set; }
}

下面是Get Action方法。在这里，我正在获取将发送到 View Model

的项目数据

[HttpGet, Route("Project")]
public async Task<ActionResult> Project()
{
    var projectTypes = (await _projectTypes.ProjectTypesList()).Value;

    var list = new List<M_ProjectType>();
    foreach (var item in projectTypes)
    {
        list.Add(new M_ProjectType
            {
                Cost = item.Cost,
                Description = item.Description,
                IsActive = item.IsActive,
                IsChecked = false,
                ProjectType = item.ProjectType,
                ProjectTypeID = item.ProjectTypeID
            }
        );
    }
    var project = new VM_Project
    {
        ProjectType = list
    };

    return View(project);
}

下面是 Razor 视图

@foreach (var item in Model.ProjectType)
{
    <table class="table table-striped">
        <tbody>

            <input type="hidden" value="@item.ProjectTypeID" name="ProjectTypeID" />
            <tr>
                <td style="width:5%">
                    @Html.CheckBoxFor(i => item.IsChecked, new { @class = "tableflat" })
                    @Html.HiddenFor(i => item.ProjectTypeID)
                </td>
                <td style="width:10%">@item.ProjectType</td>
                <td style="width:80%">@item.Description</td>
                <td style="width:5%"><b>$@item.Cost</b></td>
            </tr>

        </tbody>
    </table>
}

下面是Post操作方法

[HttpPost, Route("Project")]
public ActionResult Project(VM_Project project)
{
    return View();
}

Question: I am getting project.ProjectType = null. Any suggestion why this is happening ?

Answer 1

试试这个：

@foreach (var item in Model.ProjectType)
{
    <table class="table table-striped">
        <tbody>

                <tr>
                <td style="width:5%">
                    @Html.CheckBoxFor(i => item.IsChecked, new { @class = "tableflat" })
                    @Html.HiddenFor(i => item.ProjectTypeID, new { @Value = item.ProjectTypeID})
                </td>
            </tr>

        </tbody>
    </table>
}

Answer 2

我建议使用 EditorTemplates。

在您的 Views/Shared 目录中创建一个名为 EditorTemplates 的文件夹。
根据您的类型创建局部视图，即 M_ProjectType.cshtml

将您在 foreach 循环中使用的标记放入 M_ProjectType.cshtml 文件

@model M_ProjectType
<table class="table table-striped">
<tbody>

    <tr>
        <td style="width:5%">
            @Html.CheckBoxFor(i => i.IsChecked, new { @class = "tableflat" })
            @Html.HiddenFor(i => i.ProjectTypeID)
        </td>
        <td style="width:10%">@Model.ProjectType
        @Html.HiddenFor(i=>i.ProjectType)
        </td>
        <td style="width:80%">@Model.Description</td>
        <td style="width:5%"><b>$@Model.Cost</b></td>
    </tr>

</tbody>

然后在您的表单中呈现您的编辑器模板（注意：没有 foreach 循环）
```
@Html.EditorFor(m=>m.ProjectType)
```

您应该将正确的模型绑定到控制器中的 html 元素。

尝试使用 ID 值获取选中的复选框值

Trying to get the Selected checkbox values with the ID value

c#

asp.net-mvc-3

asp.net-mvc-4

c#-4.0