Tricky DataGrid Events Issue

DudeBori82 · October 19th, 2005, 03:14 PM

I have created a datagrid in a user control (.ascx) and i'm loading it into another page (.aspx). I create a Delete button column using the property editor and then use the properties tab in .NET to assign it an event on 'DeleteCommand'. .NET automatically inserts an event handler and method in the code, which i populate, but the event doesn't fire at run time. I do get a postback, but no event. I've read across the internet and this problem takes place in many different shapes and sizes. This one should be fairly simple, but I can't seem to fix it. I've even created a template control, added buttons, and assigned event handlers to those buttons at run time and still no go.

Any help would be great!

Actions are a direct result of your desires. Desire for good things.

DudeBori82 · October 19th, 2005, 04:53 PM

And why the heck will it work if you use a link button? I just changed it from a normal click button to a link button (on the datagrid column) and it worked! I didn't really want links, so if any one can help me....

Actions are a direct result of your desires. Desire for good things.

MAtkins · October 21st, 2005, 04:13 PM

I ran into this.
I think it's a bug.

I solved it by running a Pre_Render event proc.
I don't know why this worked but it did.

Your problem *may* be that the page class can't see the vars of the ascx file.

Code:

private void Page_Load(object sender, System.EventArgs e)
{              
  this.PreRender += new EventHandler(ThePageClassName_PreRender);
  //. . . 
}
//. . . 
private void ThePageClassName_PreRender(object sender, EventArgs e)
{
    //Bind the DataGrid to it's source;     
}

MAtkins · October 21st, 2005, 04:26 PM

I've never tried to use the grid in an ascx.
I'm guessing you know that for the grid's events to fire you've gotta have something like (below) in the 'Web Form Designer generated code'

Because your grid is in an ascx you'll have to deal with the communication between the page and the ascx.

Code:

private void InitializeComponent()
{    
  this.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemCreated);

  this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);

       }