Confirm Message without Postback

[Brygom]

Hello! I hope can help me ..
I need to show a confirmation message before the
Deleting a row, I tried this:

<telerik:RadGrid ID="rgSucursales" runat="server" AllowPaging="True" AllowSorting="True"
                        GridLines="None" onneeddatasource="rgSucursales_NeedDataSource"
                        VirtualItemCount="1" onitemcommand="rgSucursales_ItemCommand"
                        onitemdatabound="rgSucursales_ItemDataBound" >
                        <PagerStyle FirstPageToolTip="Primera Página" />
                        <MasterTableView PageSize="5">
                            <Columns>
                                <telerik:GridButtonColumn ButtonType="ImageButton" CommandName="Editar"
                                    ImageUrl="img/editar.png" Text="Editar Cuenta" UniqueName="column">
                                </telerik:GridButtonColumn>
                                <telerik:GridButtonColumn ButtonType="ImageButton" CommandName="Eliminar"
                                    ImageUrl="img/eliminar.png" Text="Eliminar Cuenta" UniqueName="EliminarColumna"  >
                                </telerik:GridButtonColumn>
                            </Columns>
                        </MasterTableView>
                        <ClientSettings EnableAlternatingItems="False">
                            <Selecting AllowRowSelect="False" />
                            <ClientMessages PagerTooltipFormatString="Página &lt;strong&gt;{0}&lt;/strong&gt; de &lt;strong&gt;{1}&lt;/strong&gt;" />
                        </ClientSettings>
                    </telerik:RadGrid>

protected void rgSucursales_ItemCommand(object source, GridCommandEventArgs e)
        {
            string cmd = e.CommandName.ToString();


            if (cmd.Equals("Editar"))
            {
                Session["BANEDIT"] = item["Codigo"].Text;
                rwSucursales.NavigateUrl = "~/OperCat.aspx";
                rwSucursales.Visible = true;

            }
            else if (cmd.Equals("Eliminar"))
            {
                GridDataItem item = (GridDataItem)e.Item;
                ImageButton deleteBtn = (ImageButton)item["EliminarColumna"].Controls[0];
                deleteBtn.Attributes.Add("OnClick", "if(!confirm('¿Está seguro que desea Realizar la Venta?')){return false;};");

                var codigoEliminar = item["Codigo"].Text;

                if (_dbase.DeleteQuery("Delete From tb where id_Bs=" + codigoEliminar).Equals("Ok"))
                {
                    //Row deleted
                                                                   "AlertSucess('#effect','¡La Cuenta ha sido eliminada!');", true);


                }
                else
                {
                    //Problem in query
                }

            }

        }

But the problem is that the first time I press the
button deletes the row, when I delete another row
It works and shows me the message.

That way I can show the confirmation message without
do a postback?

Thanks for your help!

Sincerly Briayan!

[Princy]

Hello Briayan,

A better approach would be to use the ConfirmText property of the GridButtonColumn, for which you would not have to implement custom code and this will not cause a postback! Here's an example:
aspx:

<telerik:GridButtonColumn ButtonType="ImageButton" ConfirmText="¿Está seguro que desea Realizar la Venta?"
 CommandName="Eliminar" ImageUrl="Images/UnSelected.gif" Text="Eliminar Cuenta" UniqueName="EliminarColumna">
</telerik:GridButtonColumn>

Hope this helps..
Princy.

[Brygom]

Thank you for the reply, this is my solution!..