Asp.net MVC 2 CascadingDropDown

Hi, this is my Controller Code:

public ActionResult Create()
{
      makelist = new SelectList(db.CountryMasters.ToList(), "CountryID", "CountryName",1);
        ViewData["CounrtyMaster"] = makelist;

        var modelList = new CascadingSelectList(clientMasterManagement.GetState(makelist.SelectedValue.ToString()), "StateID", "StateName");
        ViewData["StateMaster"] = modelList;

        return View("Create");
} 

and this is my View Code:

<div class="editor-field">
    <%= Html.DropDownList("CountryID", ViewData["CounrtyMaster"] as SelectList)%>
    <%= Html.ValidationMessageFor(model => model.CountryID) %>
</div>

<%= Html.CascadingDropDownList("StateMaster","CountryMast开发者_如何学Pythoner")%>

when I select upper list it's not affecting the second one, can anyone help me here???

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User CascadingSelectList function instead of SelectList in your controller action

var makelist = new SelectList(db.CountryMasters.ToList(), "CountryID", "CountryName",1); ViewData["CounrtyMaster"] = makelist;
var modelList = new CascadingSelectList(clientMasterManagement.GetState(makelist.SelectedValue.ToString()), "StateID", "StateName");
ViewData["StateMaster"] = modelList;

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Html.CascadingDropDownList is not a standard MVC helper. I take it that you are using Stephen Walther's helper. If so this question will help you out:

ASP.NET MVC - Cascading Drop Down