将选定的DropDown值传递给控制器 [英] Pass selected DropDown value to the controller

问题描述

我的视图上有一个DropDownList和一个按钮.单击按钮后，我要将选定的DropDown值传递给控制器​​.该怎么做?

I have a DropDownList and a button on my View. On click of a button, I want to pass the selected DropDown value to the controller. How to do this?

查看代码如下:

@model Sample2.Models.LeaveType
@{
    ViewBag.Title = "Status of Application";
}

@{
    List<SelectListItem> listItems = new List<SelectListItem>();
    listItems.Add(new SelectListItem
         {
             Text = "All",
             Value = "A",
             Selected = true
         });
    listItems.Add(new SelectListItem
         {
             Text = "Recommended",
             Value = "R"
         });
    listItems.Add(new SelectListItem
         {
             Text = "Sanctioned",
             Value = "S"
         });
}

<table>
    <tr>
        <td>
            @Html.DropDownListFor(model => model.LeaveType1, listItems, "-- Select Status --")
        </td>
        <td>
            @using (Html.BeginForm("Index", "Home", FormMethod.Get))
            {
                <input type="submit" value="Show" />
            }
        </td>
    </tr>
</table>

控制器代码如下:

    public ActionResult Index(string Id)
    {
        using (var context = new Admin_TestEntities())
        {
            var data = context.Leave_GetDetails(Id).ToList();
            return View(data.AsEnumerable().ToList());
        }

    }

**编辑**

在提出建议后，我将代码更改如下，并且可以正常工作:

After suggestions, I changed the code as below and it is working:

        @using (Html.BeginForm("Index", "Home", FormMethod.Post))
        {
            @Html.DropDownList("Id", listItems)
            <input type="submit" value="Show" />
        }

推荐答案

您可以这样做:

[Post]
public ActionResult Index(string fromList)
{
    ...
}

视图可以看起来像这样:

the view can look something like this:

<div>
@Html.BeginForm("Index", "Home", FormMethod.Post)
{
     @Html.DropDownListFor(model => model.LeaveType1, listItems, "-- Select Status --")
     <input type="submit" />
}
</div>

这篇关于将选定的DropDown值传递给控制器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！