Hello,

I have a MVC ViewPage with a ListView control on it:

 <asp:ListView ID="CarsListView" runat="server">
            <LayoutTemplate>
                <asp:PlaceHolder ID="itemPlaceholder" runat="server" />
            </LayoutTemplate>
            <ItemTemplate>
                ...
            </ItemTemplate>
        </asp:ListView>

Then I want to fill the ListView in the page_load event handler of the codebehind-page:

   public partial class Thumbs : ViewPage<CarsViewData>
    {

        protected void Page_Load(object sender, EventArgs e)
        {
  CarsListView.DataSource = CarsViewData.MyCarsList;
  CarsListView.DataBind();
 }
    }

I get a compilation error on the first and second line of "Page_Load", because the compiler doesn't find the "CarListView" Object:
"The name 'CarsListView' does not exist in the current context". The same problem exists with every asp Control, e.g. an <asp:button>. None of them can be addressed in the code behind file.

What am I doing wrong? I think my example should work when I look at the "Rendering Approach 2: Using Server Side Controls" part of ScottGu's Blog Post: http://weblogs.asp.net/scottgu/archive/2007/11/13/asp-net-mvc-framework-part-1.aspx

Second problem: 

What is also strange is that when I want to use the HtmlHelper-Objcet "Hmtl" it is null. So for example this code

   public partial class Thumbs : ViewPage<CarsViewData>
    {

        protected void Page_Load(object sender, EventArgs e)
        {
  Html.ActionLink(....);
 }
    }

throws a runtime exception because Html is null.

Mybe I have a corrupt installation?

I have installed the VS 2008 Team suite trial. In fact I did a lot of installing these days, so I don't remember if I have installed the ASP.NET 3.5 Extensions CTP manually or if it was shipped with the trial version.
I am using a reference to the MVCToolkit.

Thanks for your hints,
Hannes

"CarListView" not appearing in the designer file is a known issue. Try right clicking on the Thumbs page/control and hit "Convert to Web Application". That should take care of it.

Hi Brian,

thanks a lot, that helped me out. After applying "Convert to Web Application" I can perfectly address my asp controls.

Concering my second problem:

I found out that the "Html" object is only null when I try to use it on my "MVC View User Control". I tried to convert this also to a Web Application, what succeeded, but still, the Html-ojbcet ist null and I get the runtime exception (object is null ...).

Using the Html object on a normal MVC View Page is no problem, there it is not null.

Hannes

Which method are you calling on the HtmlHelpers?

Not sure if this helps:

http://forums.asp.net/t/1193081.aspx

 Also, this:

http://forums.asp.net/t/1192730.aspx 

I am using Hmtl.ActionLink<MyController>(...)

I also tried the non-generic Html.ActionLink( ... ); 

Both same result.

I think you are right, this issue is treated in the Thread  http://forums.asp.net/t/1192730.aspx  that you have posted.