System;

System.Collections.Generic;

System.Data.Linq;

System.Linq;

System.Runtime.Serialization;

System.ServiceModel;

System.ServiceModel.Activation;

System.ServiceModel.Web;

System.Text;

System.Web.Services;

Telerik.Web.UI;

QUARK.webservices

{

[

ServiceContract(Namespace = "")]

[

AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

public class strange

OperationContract]

public RadComboBoxData LoadDataTemplates(RadComboBoxContext context)

{

RadComboBoxData result = new RadComboBoxData();

quarkDataContext quarkdb = new quarkDataContext();

var allTemplates = from DEVICE_TYPE in quarkdb.DEVICE_TYPEs

orderby DEVICE_TYPE.DESC

select new RadComboBoxItemData

string text = context.Text;

if (!String.IsNullOrEmpty(text))

{

allTemplates = allTemplates.Where(item => item.Text.StartsWith(text));

}

int numberOfItems = context.NumberOfItems;

var templates2 = allTemplates.Skip(numberOfItems).Take(10);

result.Items = templates2.ToArray();

int endOffset = numberOfItems + templates2.Count();

int totalCount = allTemplates.Count();

if (endOffset == totalCount)

result.EndOfItems =

true;

result.Message =

String.Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>",

endOffset, totalCount);

return result;

}

}

}

telerik:RadComboBox ID="drp_hosttemplate" Runat="server"

Skin="Web20" Width="177px" EnableLoadOnDemand="True"

EnableVirtualScrolling="True" ShowMoreResultsBox="True"

EnableItemCaching="True" >

<WebServiceSettings Method="LoadDataTemplates" Path="webservices/strange.svc" />

<ExpandAnimation Type="InOutElastic" />

<CollapseAnimation Type="InOutElastic" />

</telerik:RadComboBox>

I’m using a web service to feed the search as you type combo box on my page.  If the search returns 0 results I get the following error:

Microsoft Jscript runtime error: ‘Items’ is null or not an object

It works fine if results are returned.  Below is the code for the RadComboBox and below that is the web service method I’m using.  Any assistance would be greatly appreciated.

Experienced this problem with both 2010 Q1 and now Q2 Beta.

RadComboBox Snippet:

<telerik:RadComboBox ID="rcmbClients" runat="server" EnableLoadOnDemand="true"
     ShowMoreResultsBox="true" EnableVirtualScrolling="true"
     TabIndex="1" EnableItemCaching="true" EnableViewState="false" EmptyMessage="-- enter text --"
     NoWrap="true" ShowWhileLoading="false"
     OnSelectedIndexChanged="rcmbClients_SelectedIndexChanged"
     AutoPostBack="true" Width="500" WebServiceSettings-Method="GetFilteredClients"
     Filter="Contains" ItemRequestTimeout="300" WebServiceSettings-Path="~/RadService.svc"
     AllowCustomText="true">
 </telerik:RadComboBox>  

Web Service Snippet:

[ServiceContract(Namespace = "")]
 [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
 public class RadService
 {
  [OperationContract]
  public RadComboBoxData GetFilteredClients(RadComboBoxContext context)
  {
      try
      {
              
         RadComboBoxData result = new RadComboBoxData();
         ClientBL clientBL = new ClientBL(); 
         IList<ShortClient> clients = clientBL.GetFilteredShortClients(context.Text.Replace("%", "[%]").Replace("&squote", "[']"));
         IEnumerable<RadComboBoxItemData> allDataItems = from client in clients

                                                         select new RadComboBoxItemData()

                                                         {

                                                             Text = client.DisplayName,

                                                             Value = client.ID.ToString()

                                                         };

         int numberOfItems = context.NumberOfItems;

         IEnumerable<RadComboBoxItemData> pageOfDataItems = allDataItems.Skip(numberOfItems).Take(500);

         result.Items = pageOfDataItems.ToArray();

         int endOffSet = numberOfItems + pageOfDataItems.Count();

         int totalCount = allDataItems.Count();

         if (endOffSet == totalCount)

             result.EndOfItems = false;

         result.Message = String.Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>", endOffSet, totalCount);

         return result;

     }

     catch (Exception ex)

     {

         string target = context.Text;

         LogManager logManager = new LogManager();

         logManager.Log(TraceEventType.Error, "Search Criteria Submitted By User: \"" + context.Text + "\""  + Environment.NewLine + ex.Message.ToString());

         throw;

     }

}

Here is the scenario

I have a RadGrid which contains a GridButtonColumn(I have highlighed in the code below). When the user clicks
then I take them to a separate page for editing. I know I can track this in the ItemCommand Event. But What I
am trying to accomplish is if possible get the cotrol id in the Page_Load so that I can skip all the other page
events and take redirect the user to the edit page.Currenly I am not able to do this since I can't get the
control id which cuased the postback (i this case it was the GridButtoncolumn) So my question is How to get
the Id/Control which caused the postback which is inside the RadGrid. Appreciate your reponse

Here is the code