Click "Delete" when pop-up "are you sure you want to delete?" ", OK after delete, cancel after return.

DataGrid Typegrid_delete () is the event that is triggered on the server when the Delete button is clicked
<script language= "JavaScript" >
<!--
function Deleteconfirm ()
{
var quesition=window.confirm ("Are you sure you want to delete it?") ");
if (quesition==true) {from1.submit (); Typegrid_delete (); return true;}
}
-->
</script>

Then put the button on the onclick event as follows:
<asp:buttoncolumn headertext= Delete "commandname=" delete "text=" "/>
This will do, no need to pass any parameters.
My practice is to write in the ItemDataBound incident:

If e.item.itemindex >= 0 Then
' Pop-up Confirm dialog box
CType (E.item.cells (i). FindControl ("Btndel"), button). Attributes ("onclick") = "Javascript:return window.confirm" (' Really want to delete it? ');"

End If

Where I is the first column-1, the deletion button inside the template column id= "Btndel"

Add the code to the display page;

<script language= "JavaScript" >
function Delete_confirm (e)
{
if (Event.srcElement.outerText = = "Delete")
Event.returnvalue =confirm ("will not be recoverable after deletion, are you sure you want to delete it?") ");
}
document.onclick=delete_confirm;
</script>