Check for "delete" clicked in code behind

[Bruce]

How can I determine if a "delete" links was clicked?

My aspx page has

<telerik:RadGrid ID="radGrid" runat="server"
.......
OnDeleteCommand="RadGrid_DeleteCommand"
>

<telerik:GridButtonColumn CommandName="Delete" Text="Delete"
UniqueName= "DeleteColumn"></telerik:GridButtonColumn>

In my codebehind I want to check to see if the delete was clicked:

Dim DeleteWasClicked as boolean

If IsPostback() then
   DeleteWasClicked = ????
end if

' I ahso have the follwing to delete the record (which works fine)

Protected Sub RadGrid_DeleteCommand(ByVal source As Object, ByVal e As GridCommandEventArgs)
'Get the GridDataItem of the RadGrid

Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)
'Get the primary key value using the DataKeyValue.

Dim PrmaryKeyID As String = item.OwnerTableView.DataKeyValues(item.ItemIndex)("CustomerID").ToString()

Dim deleteQuery As String = "DELETE from "....
' Run the query

End Sub

[Shinu]

Hi Bruce,

I tried following code snippet to get the control which causes the PostBack and checked whether its the Delete button in RadGrid.

VB:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim postbackControlInstance As Control = Nothing
    If IsPostBack Then
        Dim DeleteWasClicked As Boolean = False
        Dim postbackControlName As String = Page.Request.Params.[Get]("__EVENTTARGET")
        If postbackControlName IsNot Nothing AndAlso postbackControlName <> String.Empty Then
            postbackControlInstance = Page.FindControl(postbackControlName)
        End If
        Dim cause As Control = postbackControlInstance
        Try
            Dim button As LinkButton = DirectCast(cause, LinkButton)
            If button.Text = "Delete" AndAlso button.CommandName = "Delete" Then
                DeleteWasClicked = True
            End If
        Catch
        End Try
        Response.Write(DeleteWasClicked)
    End If
End Sub

Another approach is by using ViewState, save the deltebuttonclick status and check that in PreRender event of RadGrid.
VB:

Protected Sub RadGrid1_DeleteCommand(ByVal source As Object, ByVal e As GridCommandEventArgs)
         . . .
      ViewState("deleteclicked") = "delete"
End Sub
Protected Sub RadGrid1_PreRender(ByVal sender As Object, ByVal e As EventArgs)
    If IsPostBack AndAlso ViewState("deleteclicked") = "delete" Then
        Response.Write("delete clicked")
    End If
End Sub

Hope this helps.

Thanks,
Shinu.

[Bruce]

Perfect - Thanks!