Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'x_it.Controls.NewsDetail'.

I have dynamicly filled a Panel with my usercontrols, I have no problem.

But when I try to get in a for loop to read the data of my usercontrol, I get an error.

Can somebody explain me what I'am doing wrong ?

 

		  for (int i = 0; i < PnlNewsDetails.Controls.Count; i++)
		  {
			 x_it.Controls.NewsDetail nd = (x_it.Controls.NewsDetail)(PnlNewsDetails.Controls[i]);
			 if (Request.RequestType == "POST" && !nd.ErrorInput)
			 {
			    tbNews tn = new tbNews();
			    tn.Date = nd.Date;
			    tn.Title = nd.Title;
			    tn.SeoUrl = nd.SeoUrl;
			    tn.SeoExt = nd.SeoExt;
			    tn.NewsContent = nd.Content;
			    tn.EditRecord(int.Parse(nd.Tag));
			    PnlSuccess.Visible = true;
			    PnlNewsDetails.Visible = false;
			 }
		  }
 
 

 


Kind Regards,

Joeri Pansaerts.

From Bruges, Belgium :)
0
joeri
4/4/2008 7:59:58 PM
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hi!

 

could you be more specific about your error message? thanX

 

ciao ;-)


jan maru

Click "Mark as Answer" on the post if my words were helpful.

0
janmaru
4/4/2008 9:23:50 PM

That's the error I get :

 The 'x_it.Controls.NewsDetail' is the usercontrol made by myself.


Kind Regards,

Joeri Pansaerts.

From Bruges, Belgium :)
0
joeri
4/5/2008 4:18:55 AM

Sounds like your Panel contains some controls that aren't of your custom type NewsDetail (like a Literal, apparently).

Try changing it to this:

		  for (int i = 0; i < PnlNewsDetails.Controls.Count; i++)
{
if (PnlNewsDetails.Controls[i].GetType() == typeof(x_it.Controls.NewsDetail))
{
x_it.Controls.NewsDetail nd = (x_it.Controls.NewsDetail)(PnlNewsDetails.Controls[i]);
if (Request.RequestType == "POST" && !nd.ErrorInput)
{
tbNews tn = new tbNews();
tn.Date = nd.Date;
tn.Title = nd.Title;
tn.SeoUrl = nd.SeoUrl;
tn.SeoExt = nd.SeoExt;
tn.NewsContent = nd.Content;
tn.EditRecord(int.Parse(nd.Tag));
PnlSuccess.Visible = true;
PnlNewsDetails.Visible = false;
}
}
}
Then it'll only try casting the controls of the correct type.

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0
gt1329a
4/5/2008 4:22:27 AM

No, my panel contains only my usercontrol.

when I try your script, the debugger never comes in the if statement. So the only thing I know is that for some reason my UserControl can't be typecasted, but I don't know why ... . Somebody ?


Kind Regards,

Joeri Pansaerts.

From Bruges, Belgium :)
0
joeri
4/5/2008 4:38:01 AM

I'd suggest looking closer at the Controls collection that you're iterating over.  It might not be the section of the page that you think it is.  Based on that error, it definitely is finding a Literal control, not just your custom control.
 


Encosia - ASP.NET, AJAX, and more.

Latest article: Using complex types to make calling services less… complex
0
gt1329a
4/5/2008 6:29:16 AM

 Oohh I think I understand it.

A very stupid mistake of me.

A make the usercontrol realtime in the pageload event, only if the page is not equal to POST. Of course, if you press the edit button, the usercontrol doesn't exist.

 


Kind Regards,

Joeri Pansaerts.

From Bruges, Belgium :)
0
joeri
4/5/2008 6:47:11 AM
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