这是我的查看代码：
@using(Html.BeginForm(new { SelectedId = /*SelectedValue of DropDown*/ })) {
<fieldset>
<dl>
<dt>
@Html.Label(Model.Category)
</dt>
<dd>
@Html.DropDownListFor(model => Model.Category,CategoryList)
</dd>
</dl>
</fieldset>
<input type="submit" value="Search" />
}
如图所示,我需要将下拉选择值传递给BeginForm()Html帮助器中的操作.你的建议是什么？
解决方法
提交表单时将传递选定的值,因为下拉列表由< select>表示.元件.您只需调整视图模型,使其具有名为SelectedId的属性,例如,您将绑定下拉列表：
@using(Html.BeginForm() )
{
<fieldset>
<dl>
<dt>
@Html.LabelFor(x => x.SelectedId)
</dt>
<dd>
@Html.DropDownListFor(x => x.SelectedId,Model.CategoryList)
</dd>
</dl>
</fieldset>
<input type="submit" value="Search" />
}
这假定以下视图模型：
public class Myviewmodel { [DisplayName("Select a category")] public int SelectedId { get; set; } public IEnumerable<SelectListItem> CategoryList { get; set; } }
将由您的控制器处理：
public ActionResult Index()
{
var model = new Myviewmodel();
// TODO: this list probably comes from a repository or something
model.CategoryList = new[]
{
new SelectListItem { Value = "1",Text = "category 1" },new SelectListItem { Value = "2",Text = "category 2" },new SelectListItem { Value = "3",Text = "category 3" },};
return View(model);
}
[HttpPost]
public ActionResult Index(Myviewmodel model)
{
// here you will get the selected category id in model.SelectedId
return Content("Thanks for selecting category id: " + model.SelectedId);
}
