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Linq paging radajaxmanager

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Grid

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

David Simmonds asked on 30 Apr 2010, 08:14 PM

I have a form with a grid in it that uses a LinqDataSource. The Selecting event is wired up to return the number of rows. I use a RadAjaxManager and a RadAjaxLoadingPanel. However, when I click on a paging control the grid "flashes" and the loading "wheel" does not appear like the 300,000 Linq demo shows. The paging does work though. How do I make the loading stuff work? I have supplied the code for a cutback version of what I am doing in a real web app.

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm8.aspx.cs" Inherits="CharityCheck.WebForm8" %> 
        
            <%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %> 
        
            <!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> 
        
                    <asp:Panel ID="Panel1" runat="server">  
        
                        <telerik:RadScriptManager ID="RadScriptManager1" runat="server" ScriptMode="Release" /> 
        
                        <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" > 
        
                            <AjaxSettings> 
        
                                <telerik:AjaxSetting AjaxControlID="RadGrid1">  
        
                                    <UpdatedControls> 
        
                                        <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1" /> 
        
                                    </UpdatedControls> 
        
                                </telerik:AjaxSetting> 
        
                            </AjaxSettings> 
        
                        </telerik:RadAjaxManager> 
        
                        <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" /> 
        
                        <telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True"   
        
                            Skin="Office2007" GridLines="None"   
        
                            AutoGenerateColumns="False"   
        
                            DataSourceID="LinqDataSource1" > 
        
                            <MasterTableView TableLayout="Fixed" > 
        
                                <Columns> 
        
                                    <telerik:GridBoundColumn DataField="CompanyName" DefaultInsertValue=""   
        
                                        HeaderText="CompanyName" SortExpression="CompanyName"   
        
                                        UniqueName="CompanyName" ReadOnly="True" > 
        
                                    </telerik:GridBoundColumn> 
        
                                    <telerik:GridBoundColumn DataField="ID" DefaultInsertValue="" 
        
                                        HeaderText="ID" SortExpression="ID" UniqueName="ID"   
        
                                        DataType="System.Int32" ReadOnly="True">  
        
                                    </telerik:GridBoundColumn> 
        
                                </Columns> 
        
                            </MasterTableView> 
        
                            <ClientSettings>    
        
                                <selecting allowrowselect="True" /> 
        
                            </ClientSettings>    
        
                            <PagerStyle Position="TopAndBottom" /> 
        
                        </telerik:RadGrid> 
        
                        <asp:LinqDataSource ID="LinqDataSource1" runat="server"   
        
                            AutoPage="False" ContextTypeName="CharityCheck.CharityCheckEntities"   
        
                            onselecting="LinqDataSource1_Selecting"   
        
                            TableName="CompanySet" OrderBy="CompanyName"   
        
                            Select="new (CompanyName, ID)">  
        
                        </asp:LinqDataSource> 
        
                    </asp:Panel>         
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Web;  
        
            using System.Web.UI;  
        
            using System.Web.UI.WebControls;  
        
            using Infragistics.WebUI.UltraWebGrid;  
        
            using Telerik.Web.UI;  
        
            namespace CharityCheck  
        
            {  
        
                public partial class WebForm8 : System.Web.UI.Page  
        
                {  
        
                    protected void Page_Load(object sender, EventArgs e)  
        
                    {  
        
                    }  
        
                    protected void LinqDataSource1_Selecting(object sender, LinqDataSourceSelectEventArgs e)  
        
                    {  
        
                        CharityCheckEntities entities = new CharityCheckEntities();  
        
                        var data = from company in entities.CompanySet  
        
                                   select company;  
        
                        e.Arguments.TotalRowCount = data.Count();  
        
                    }  
        
                }  
        
            }

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Linq paging radajaxmanager

2 Answers, 1 is accepted