Web (ASP.NET) ทำยังไงครับ ถ้าจะให้ปุ่ม delete ใน gridview มี msgbox confirm (y n)

        <asp:GridView ID="myGridView" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField HeaderText="ProductID">
                    <ItemTemplate>
                        <asp:Label ID="lblProductID" runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="ProductName">
                    <ItemTemplate>
                        <asp:Label ID="lblProductName" runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Delete">
                    <ItemTemplate>
                        <asp:LinkButton ID="lnkDelete" runat="server"></asp:LinkButton>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

    Protected Sub myGridView_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles myGridView.RowDataBound

        If e.Row.RowType = DataControlRowType.DataRow Then

            '*** ProductID ***'
            Dim lblProductID As Label = DirectCast(e.Row.FindControl("lblProductID"), Label)
            If Not IsNothing(lblProductID) Then
                lblProductID.Text = e.Row.DataItem("ProductID")
            End If

            Dim dt As DataTable = getProductDet(e.Row.DataItem("ProductID"))

            '*** ProductName ***'
            Dim lblProductName As Label = DirectCast(e.Row.FindControl("lblProductName"), Label)
            If Not IsNothing(lblProductName) Then
                lblProductName.Text = dt.Rows(0)("ProductName")
            End If

            '*** Delete ***'
            Dim lnkDelete As LinkButton = DirectCast(e.Row.FindControl("lnkDelete"), LinkButton)
            If Not IsNothing(lnkDelete) Then
                lnkDelete.Text = "Delete"
                lnkDelete.CommandName = "Del"
                lnkDelete.CommandArgument = e.Row.RowIndex
                lnkDelete.Attributes.Add("OnClick", "return confirm('Delete this row?');")
            End If

        End If

    End Sub