Problems with Html.DropDownList in ASP.NET RC1

Question

For some reason my drop down list is not retaining it's selected value - I know I am missing something simple here. Thanks for any comments!

Controllers

    public ActionResult Test()
    {
        ViewData["MonitoringType"] = new SelectList(myModel.GetMonitoringType(), "Category", "Category");
        return View();
    }

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Test(FormCollection formValues)
    {
        ViewData["MonitoringType"] = new SelectList(myModel.GetMonitoringType(), "Category", "Category", formValues["MonitoringType"]);
        return View();
    }

And View:

This doesn't work

<%= Html.DropDownList("MonitoringType", (SelectList)ViewData["MonitoringType"],new {style = "width: 300px;"})%>

This works

<%= Html.DropDownList("MonitoringType")%>

score 2 · Answer 1 · answered Feb 25 '09 at 18:31

2

quote from controller:

    var projects = from project in DB.Projects
                   orderby project.Name
                   select new { project.Id, project.FullName };
    ViewData["ProjectId"] = new SelectList(projects, "Id", "FullName", selectedProjectId);

quote from page:

<%= Html.DropDownList("ProjectId", "-- All Projects --")%>

answered Feb 25 '09 at 18:31

Dmitry44

831
1
7
9

Thanks for the comment - I guess I should have made it a bit more explicit "Category" is distinct and is both the value and the text. And really where it is failing is the (SelectList)ViewData["MonitoringType"] – Eric Ness Feb 25 '09 at 19:19

score 0 · Answer 2 · edited May 23 '17 at 11:48

0

Take a look at my answer to a similar question. It appears there is a bug in the DropDownList extension method when using methods other than DropDownList(name).

Html.DropDownList in ASP.NET MVC RC (refresh) not pre-selecting item

edited May 23 '17 at 11:48

Community

1
1

answered Feb 26 '09 at 17:36

Troy

1,640
10
16

Problems with Html.DropDownList in ASP.NET RC1

2 Answers2