datagrid

[Steph]

Hello,

I have a datagrid dgGrid and want add column depending of a context. I am
usin this following code :

....
while (Clcpt<7)
{
ButtonColumn myCol = new ButtonColumn();
myCol.HeaderText = Clcpt.ToString();
myCol.ButtonType = ButtonColumnType.LinkButton;
myCol.Text = "<img src='images/Add.gif' border=0>";
myCol.CommandName = "cmd"+Clcpt;
Response.Write("cmd"+Clcpt+"/");
dgGrid.Columns.Add(myCol);
Clcpt++;
}
...
Cols are ok but I can't intercept the clik on the button. I have an event
handler dgDrid_ItemCommand but it is never fired ?

Any idea ?

thanks

 

[Guest]

First, it does not look like you attach an event handler to the button.

Second, you must add the same column and event handler on postback.

The way the postback architecture works, it needs a *context* to capture the
triggering control. Since HTTP is stateless, it recreates the control
hierarchy on postback and then any events that are related to the controls
are triggered.

If you don't want to get too involved in the .Net page/postback
architecture, the easiest solution is to simply attach a query string to the
link manually and capture the click using Request.QueryString or Request.Form
(if you use hidden inputs on the client side). Not necessarily pretty, but
the easiest solution.