Questions on UI for ASP.NET AJAX Forum

2 answers

118 views

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();  
        
                    }  
        
                }  
        
            }

Grid

answered on 05 May 2010

3 answers

111 views

Radtextbox not maintaining its text in IE 8

Hi,

I am facing a strange issue with RadTextBox: I have a RadtextBox inside a RadGrid, when I click a button(outside the Grid) the value in the Textbox vanishes, it isnot maintaining the value. why is it so?

Another point to note is, this happens only for IE 8, the textbox is maintaining its value in IE 6.

What could be the reason?

Please let me know the solution for this issue...

-Liji Gilesh

Input

answered on 05 May 2010

9 answers

792 views

Web service error: An entry with the same key already exists

Hello,

I am trying to hook a RadScheduler up to a WebService, but cannot even get the page to render, even after following these directions to the letter. Some relevant facts: I am using VS 2010 b2 and IIS7. I've tried this in both a WebForms project and an MVC project, and I get the same error each time. I'll post the stack trace below. Let me know if there's any other information I can provide you.

Thanks,

Daniel

Stack trace:

Server Error in '/' Application.

An entry with the same key already exists.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: An entry with the same key already exists.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentException: An entry with the same key already exists.]

System.Collections.Specialized.ListDictionary.Add(Object key, Object value) +7689715

System.Web.UI.ClientScriptManager.RegisterExpandoAttribute(String controlId, String attributeName, String attributeValue, Boolean encode) +337

System.Web.UI.ScriptRegistrationManager.RegisterExpandoAttribute(Control control, String controlId, String attributeName, String attributeValue, Boolean encode) +115

[TargetInvocationException: Exception has been thrown by the target of an invocation.]

System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +0

System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +639

System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +38

System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams) +3262

System.Web.UI.WebControls.ValidatorCompatibilityHelper.RegisterExpandoAttribute(Control control, String controlId, String attributeName, String attributeValue, Boolean encode) +333

System.Web.UI.WebControls.BaseValidator.AddAttributesToRender(HtmlTextWriter writer) +381

System.Web.UI.WebControls.RequiredFieldValidator.AddAttributesToRender(HtmlTextWriter writer) +25

System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer) +32

System.Web.UI.WebControls.BaseValidator.Render(HtmlTextWriter writer) +512