<ItemTemplate>

<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False"

CommandName="Edit" Text="Edit" meta:resourcekey="LinkButton1Resource2"></asp:LinkButton>

&nbsp;<asp:LinkButton ID="LinkButton2" runat="server"

CommandName="Delete" Text="Delete" meta:resourcekey="LinkButton2Resource2"></asp:LinkButton>

<asp:ConfirmButtonExtender ID="LinkButton2_ConfirmButtonExtender"

runat="server" ConfirmText="You are sure delete this file?" Enabled="True" TargetControlID="LinkButton2">

</asp:ConfirmButtonExtender>

</ItemTemplate>

In "normal" aspx page (after click on LinkButton) I can see Javascript window with this message, but on my aspx (with my module) page anything.
I read, that I must use like this

LinkButton2.Attributes.Add("onclick", " addValue()")

but LinButton2 isn't visible from my ascx.vb page

Thanks a lot for your help me

Hi, thanks, I am add a new value to the function

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

GridView1.Attributes.Add("onclick", " return " + "confirm('" + DELETE + "')")

End Sub

DELETE is a readonly property with String value

I know, that isn't optimal resolution, but it  works. I tried to add new function

    Protected Sub GridView1_RowDeleting(ByVal sender As Object, ByVal e As GridViewDeleteEventArgs) Handles GridView1.RowDeleting

        Dim grid As GridViewRow = GridView1.Rows(Me.GridView1.EditIndex)
        Dim lbt As LinkButton = CType(grid.Cells(3).FindControl("LinkButton2"), LinkButton)

       
        If lbt.GetType() Is GetType(LinkButton) Then
            lbt.Attributes.Add("onclick", " return " + "confirm('" + DELETE + "')")
           
        End If

    End Sub

but result is still false. In table I have columns
id, name, description, and template field with two buttons - Edit and Delete

Regards