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SelectedIndexChanged firing involuntarily after a postback

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Grid
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Leandro
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Leandro asked on 20 Jul 2012, 08:46 PM
Good afternoon,

I have the following problem in my RadGrid have a column with the command button "select" to fire the SelectedIndexChanged event.
So far so good, when you click the button, it triggers the normal SelectedIndexChanged event.
The problem occurs when I select a row, without clicking on the button by clicking on the same line, and soon after I click for example on one other button, by doing this, it seems that for the button to cause a postback on the page, it triggers the SelectedIndexChanged event of RadGrid.

   <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
        <script type="text/javascript">
            function Lancar_Tarefa(id) {               
                window.radopen("Agenda_Tarefa_Novo.aspx?Id=" + id, "AgendaTarefa");
            }
             
            function Msg(msg, tipo) {
                window.radopen("Msg.aspx?Texto=" + msg + "&Tipo=" + tipo, "Msg");
                return false;
            }
 
        </script>
    </telerik:RadScriptBlock>
 
   <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="btnFiltrar">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="PanelAgenda" LoadingPanelID="RadAjaxLoadingPanel1" />
                    <telerik:AjaxUpdatedControl ControlID="pnGrid" LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>
    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" Skin="Windows7" runat="server"></telerik:RadAjaxLoadingPanel>

       <
telerik:RadButton ID="btnFiltrar" runat="server" Skin="Web20" Text="Filtrar"
       Width="90px" style="margin-right:10px;">
<Icon PrimaryIconUrl="../../Icones/VizualizarGrid2.png" />
</telerik:RadButton>
 
<asp:Panel ID="pnGrid" runat="server">
<telerik:RadGrid ID="gridAgenda" runat="server" Width="710px" Height="462px"
                        Skin="Outlook" AutoGenerateColumns="False" CellSpacing="0"
                        GridLines="None">
                        <ClientSettings>
                            <Selecting AllowRowSelect="True" />
                            <Scrolling AllowScroll="True" UseStaticHeaders="True" />
                        </ClientSettings>
                        <MasterTableView>
                            <CommandItemSettings ExportToPdfText="Export to PDF" />
                            <RowIndicatorColumn FilterControlAltText="Filter RowIndicator column"
                                Visible="True">
                                <HeaderStyle Width="20px" />
                            </RowIndicatorColumn>
                            <ExpandCollapseColumn FilterControlAltText="Filter ExpandColumn column"
                                Visible="True">
                                <HeaderStyle Width="20px" />
                            </ExpandCollapseColumn>
                            <Columns>
                                <telerik:GridButtonColumn ButtonType="ImageButton" CommandName="Select"
                                    FilterControlAltText="Filter column column" ImageUrl="~/Icones/Grid.gif"
                                    UniqueName="column">
                                    <HeaderStyle Width="35px" />
                                    <ItemStyle HorizontalAlign="Center" Width="35px" />
                                </telerik:GridButtonColumn>
                                <telerik:GridDateTimeColumn DataField="DFdata_inicio"
                                    FilterControlAltText="Filter DFdata_inicio column" HeaderText="Data/Hora"
                                    UniqueName="DFdata_inicio">
                                    <HeaderStyle Width="120px" />
                                    <ItemStyle Width="120px" />
                                </telerik:GridDateTimeColumn>
                                <telerik:GridBoundColumn DataField="DFid_agenda_relacionada"
                                    FilterControlAltText="Filter DFid_agenda_relacionada column" HeaderText="ID"
                                    UniqueName="DFid_agenda_relacionada">
                                    <HeaderStyle Width="50px" />
                                    <ItemStyle Width="50px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFfase"
                                    FilterControlAltText="Filter DFfase column" HeaderText="Fase"
                                    UniqueName="DFfase" Visible="false">
                                    <HeaderStyle Width="40px" />
                                    <ItemStyle Width="40px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridTemplateColumn HeaderText="Fase" UniqueName="Fase">
                                    <ItemTemplate>
                                        <asp:Panel ID="CorFase" runat="server" Height="20px" Width="20px" />
                                    </ItemTemplate>
                                    <HeaderStyle Width="40px" />
                                    <ItemStyle HorizontalAlign="Center" Width="40px" />
                                </telerik:GridTemplateColumn>
                                <telerik:GridBoundColumn DataField="DFusuario_agenda"
                                    FilterControlAltText="Filter DFusuario_agenda column" HeaderText="Agenda"
                                    UniqueName="DFusuario_agenda">
                                    <HeaderStyle Width="85px" />
                                    <ItemStyle Width="85px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFtarefa"
                                    FilterControlAltText="Filter DFtarefa column" HeaderText="Tarefa"
                                    UniqueName="DFtarefa">
                                    <HeaderStyle Width="200px" />
                                    <ItemStyle Width="200px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFenviado_por"
                                    FilterControlAltText="Filter DFenviado_por column" HeaderText="Enviado Por"
                                    UniqueName="DFenviado_por">
                                    <HeaderStyle Width="85px" />
                                    <ItemStyle Width="85px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFcliente"
                                    FilterControlAltText="Filter DFcliente column" HeaderText="Cliente"
                                    UniqueName="DFcliente">
                                    <HeaderStyle Width="200px" />
                                    <ItemStyle Width="200px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFid_agenda"
                                    FilterControlAltText="Filter DFid_agenda column" HeaderText="DFid_agenda"
                                    UniqueName="DFid_agenda" Visible="False">
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="DFid_usuario_agenda"
                                    FilterControlAltText="Filter DFid_usuario_agenda column"
                                    HeaderText="DFid_usuario_agenda" UniqueName="DFid_usuario_agenda"
                                    Visible="False">
                                </telerik:GridBoundColumn>
                            </Columns>
                            <EditFormSettings>
                                <EditColumn FilterControlAltText="Filter EditCommandColumn column">
                                </EditColumn>
                            </EditFormSettings>
                        </MasterTableView>
                        <FilterMenu EnableImageSprites="False">
                        </FilterMenu>
                    </telerik:RadGrid>
</asp:Panel>


   Private Sub gridAgenda_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles gridAgenda.SelectedIndexChanged
        If gridAgenda.SelectedItems.Count > 0 Then
            For Each Row As GridDataItem In gridAgenda.SelectedItems
                If cmbUsuario.SelectedValue = "" Then
                    clsVariavel_Sessao.Agenda_IdUsuario = Row("DFid_usuario_agenda").Text
                    TableRetorno = clsConexao.Executar_Retornar("SELECT lcase(DFnome), lcase(DFemail) FROM TBusuario WHERE DFid_usuario = " & Row("DFid_usuario_agenda").Text)
                    clsVariavel_Sessao.Agenda_Usuario = TableRetorno(0)(0)
                    clsVariavel_Sessao.Agenda_UsuarioLogin = TableRetorno(0)(1)
                End If
                ScriptManager.RegisterClientScriptBlock(Me, [GetType](), "Tarefa", "Lancar_Tarefa(" & Row("DFid_agenda").Text & ")", True)
            Next
        End If
 
        Exit Sub
Erro:
        MensagemBox("Operação cancelada.", TipoMsg.Erro, Page)
        Call Gravar_Log_Erro(Err.Description, clsVariavel_Sessao.Erro, clsVariavel_Sessao.Default_UsuarioLogadoID, clsVariavel_Sessao.Default_UsuarioLogadoLogin, clsVariavel_Sessao.Default_UsuarioLogadoIP, clsVariavel_Sessao.SiteMaster_FormularioID, clsVariavel_Sessao.SiteMaster_urlWithSessionID, "gridAgenda_SelectedIndexChanged")
    End Sub

6 Answers, 1 is accepted

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Shinu
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answered on 23 Jul 2012, 08:08 AM
Hi Leandro,

I guess your requirement is to prevent entering the SelectedIndexChange Event on an external button click event after selecting a row.

ASPX:
<asp:Button ID="Button1" runat="server" Text="Button1" 
        CommandName="save" UseSubmitBehavior="false" onclick="Button1_Click" />

VB:
Protected Sub gridAgenda_SelectedIndexChanged(sender As Object, e As EventArgs)
             
    If Request.Form("__EVENTTARGET").ToString() <> "Button1" Then
          'your code
    End If
End Sub

Thanks,
Shinu.
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Leandro
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answered on 23 Jul 2012, 11:49 AM
Hi Shinu,

the "Request.Form (" __EVENTTARGET "). ToString ()" is returning me nothing, what should I do?
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Leandro
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answered on 23 Jul 2012, 11:54 AM
Sorry sorry, my mistake, I wrote the name of the event wrong: S
How would I do in the case to put the "UseSubmitBehavior" in GridColumnButton?
Why does the form contain various buttons and other components that cause postback, if I treat each control will be feasible.
I would check the "SelectedIndexChanged" routine to run only if called by the click of the button column.

Thank you.
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Leandro
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answered on 24 Jul 2012, 12:14 PM
And there? any solution?
0
Marin
Telerik team
answered on 25 Jul 2012, 09:17 AM
Hello,

 This happens because you have enabled the client-side selection of the grid which selects a row whenever you click inside it. To prevent this behavior you should set AllowRowSelect="false". This way a row will be selected only by clicking on the button column which fires the select command.

Regards,
Marin
the Telerik team
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Leandro
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answered on 25 Jul 2012, 11:53 AM
Beauty! This solves for me on screen that I use the button "selected" with the event "SelectedIndexChanged". Thank you Marin.
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Leandro
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Shinu
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Leandro
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Marin
Telerik team
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