This is my View Code:
@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" />
}
As code shown I need to pass the dropdown
selected value to the action in BeginForm()
Html helper. What is your suggestion?
Darin Dimitrov
The selected value will be passed when the form is submitted because the dropdown list is represented by a <select>
element. You just need to adapt your view model so that it has a property called SelectedId
for example to which you will bind the dropdown:
@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" />
}
This assumes the following view model:
public class MyViewModel
{
[DisplayName("Select a category")]
public int SelectedId { get; set; }
public IEnumerable<SelectListItem> CategoryList { get; set; }
}
that will be handled by your controller:
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);
}
来源:https://stackoverflow.com/questions/10187469/pass-selectedvalue-of-dropdownlist-in-html-beginform-in-asp-net-mvc-3