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[Solved] AjaxManager does not refresh Grid: what am I doing wrong?

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Ajax

This is a migrated thread and some comments may be shown as answers.

Eric asked on 30 Apr 2009, 04:49 PM

Dear all,

I think (hope?) that it is simple but can't see why my grid is not refreshing...

I have a (ASP) table holding four filter criteria used to select data displayed in the grid.
My controls have auto post and I know they fire since I can debug the Page_Load event but for some reason my grid does not refresh on the browser.

Could you spot if I am doing something drastically wrong?

Through RadAjaxManager, I am asking to refresh the grid based on the ASP table (can't see the controls in RadAjaxManager smart tag) and/or RadAjaxManager itself.

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AttributesV3.aspx.cs" Inherits="FoxAdmin.AttributesV3" 
        
                EnableEventValidation="false" %> 
        
            <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> 
        
            <%@ Register Src="Controls/DisplayErrorV3.ascx" TagName="DisplayError" TagPrefix="uc2" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title></title> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <div id="HiddenFields" style="visibility: hidden"> 
        
                    <asp:HiddenField ID="txtNodeKey" runat="server" /> 
        
                    <asp:HiddenField ID="txtShowFVOptions" runat="server" Value="1" /> 
        
                </div> 
        
                <div> 
        
                    <telerik:RadWindowManager ID="RadWindowManager1" runat="server"> 
        
                    </telerik:RadWindowManager> 
        
                    <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> 
        
                    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"> 
        
                        <AjaxSettings> 
        
                            <telerik:AjaxSetting AjaxControlID="RadAjaxManager1"> 
        
                                <UpdatedControls> 
        
                                    <telerik:AjaxUpdatedControl ControlID="RadGridAttributes" /> 
        
                                </UpdatedControls> 
        
                            </telerik:AjaxSetting> 
        
                            <telerik:AjaxSetting AjaxControlID="tblFilterOptions"> 
        
                                <UpdatedControls> 
        
                                    <telerik:AjaxUpdatedControl ControlID="RadGridAttributes" /> 
        
                                </UpdatedControls> 
        
                            </telerik:AjaxSetting> 
        
                        </AjaxSettings> 
        
                    </telerik:RadAjaxManager> 
        
                    <asp:UpdatePanel ID="updError" runat="server" UpdateMode="Always"> 
        
                        <ContentTemplate> 
        
                            <uc2:DisplayError ID="DisplayError1" runat="server" /> 
        
                        </ContentTemplate> 
        
                    </asp:UpdatePanel> 
        
                    <asp:Table ID="tblFilterOptions" runat="server" HorizontalAlign="Center" ToolTip="Filter the Properties" 
        
                        Width="100%" BorderStyle="Solid"> 
        
                        <asp:TableRow> 
        
                            <asp:TableCell ID="tcPropertyTypeFilter" runat="server"> 
        
                                &nbsp;Type: 
        
                                <telerik:RadTextBox ID="txtPropertyDescFilter" runat="server" Wrap="False" AutoPostBack="True" 
        
                                    Width="75px" /> 
        
                            </asp:TableCell> 
        
                            <asp:TableCell ID="tcPropertyGroup" runat="server"> 
        
                                &nbsp;Group: 
        
                                <telerik:RadComboBox ID="cboPropertyGroup" runat="server" Width="150px" AutoPostBack="True" 
        
                                    NoWrap="True" DropDownWidth="250px" /> 
        
                            </asp:TableCell> 
        
                            <asp:TableCell ID="tcDataType" runat="server"> 
        
                                &nbsp;Data Type: 
        
                                <telerik:RadComboBox ID="cboDataType" runat="server" Width="80px" AutoPostBack="True" 
        
                                    NoWrap="True" DropDownWidth="100px" /> 
        
                            </asp:TableCell> 
        
                            <asp:TableCell ID="tcFutureValues" runat="server"> 
        
                                &nbsp;Future Values: 
        
                                <telerik:RadComboBox ID="cboFutureValues" runat="server" Width="70px" AutoPostBack="True" 
        
                                    NoWrap="True" DropDownWidth="100px" /> 
        
                            </asp:TableCell> 
        
                        </asp:TableRow> 
        
                    </asp:Table> 
        
                    <telerik:RadGrid ID="RadGridAttributes" runat="server" OnNeedDataSource="RadGridAttributes_NeedDataSource" 
        
                        AutoGenerateColumns="False" GridLines="None" EnableViewState="False" AllowCustomPaging="True" 
        
                        AllowPaging="True"> 
        
                        <MasterTableView CellSpacing="-1" EnableViewState="false"> 
        
                            <RowIndicatorColumn> 
        
                                <HeaderStyle Width="20px"></HeaderStyle> 
        
                            </RowIndicatorColumn> 
        
                            <ExpandCollapseColumn> 
        
                                <HeaderStyle Width="20px"></HeaderStyle> 
        
                            </ExpandCollapseColumn> 
        
                            <Columns> 
        
                                <telerik:GridBoundColumn DataField="mp_Key" HeaderText="Property Key" UniqueName="column" 
        
                                    Display="false" /> 
        
                                <telerik:GridBoundColumn DataField="pt_Desc" HeaderText="Property Type" UniqueName="column" 
        
                                    Display="true" /> 
        
                                <telerik:GridBoundColumn DataField="DataValue" HeaderText="Value" UniqueName="column" 
        
                                    Display="true" /> 
        
                                <telerik:GridBoundColumn DataField="mp_ValidFrom" HeaderText="ValidFrom" UniqueName="column" 
        
                                    DataFormatString="{0:dd/MM/yyyy}" Display="true" /> 
        
                            </Columns> 
        
                        </MasterTableView> 
        
                        <ClientSettings> 
        
                            <Selecting AllowRowSelect="True" /> 
        
                        </ClientSettings> 
        
                    </telerik:RadGrid> 
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

Thanks for your time

Eric

3 Answers, 1 is accepted

answered on 04 May 2009, 11:36 AM

Hello Eric,

If setting the update mode of the MS UpdatePanel to Always is applicable solution for your case, you can force the update panels injected by the ajax manager instance to update their content on each submit intercepting the OnAjaxSettingCreating event of the manager as follows:

    
            Protected Sub RadAjaxManager1_AjaxSettingCreating(ByVal sender As Object, ByVal e As AjaxSettingCreatingEventArgs)  
        
             If (Not e.Initiator.ID.IndexOf("tblFilterOptions") = 0) Or (Not e.Initiator.ID.IndexOf("RadAjaxManager1") = 0) Then 
        
               e.UpdatePanel.UpdateMode = UpdatePanelUpdateMode.Always  
        
             EndIf  
        
            End Sub

More information about this server event can be gathered from this help topic.

Kind regards,

Sebastian
the Telerik team

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