I have a basic grid for testing that has a content area for each row that can be expanded.  I am setting a custom image for the expand and collapse image.  This was confusing already as I tried a few different techniques to get it working.  Using an ExpandCollapseColumn element in markup seemed to do nothing, however, I was able to get it to work by using the properties on the master table element or by setting them in the column creation event in the code behind.

My problem is that no matter how I specify the images, they are lost after I expand a row and then collapse it.  Once collapsed the image src is shown as undefined in the browser.  The hierarchy loading mode is conditional.  The problem doesn't happen if I set it to "server on demand" or client.  I can't think of a reason why this would be by design, and I think the grid should be able to track its expand and collapse images especially if it can do so in client mode.

In the example I am setting the images in 2 different ways, and it still has the same issue.

I have a sample program and trying to use the declarative binding using WCF service. It does not give error but only shows empty grid. it also shows the count but not the data. Data service returns data JSON data as well that I can see via browser developer tools.
            <ClientSettings>
                <ClientEvents OnDataBindingFailed="onError" />
                <DataBinding Location="DataService.svc"
                    SelectMethod="GetStatesForGrid"                    
                    DataPropertyName="Data"
                    FilterParameterType="Linq"
                    SortParameterType="Linq"></DataBinding>
            </ClientSettings>
    [ServiceKnownType(typeof(State))]
    [ServiceContract]
    public interface IDataService
    {
        [OperationContract]
        [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)]
        StateResult GetStatesForGrid(int startRowIndex, int maximumRows, string sortExpression, string filterExpression);
Here is the service code (this is just sample code, goal is not to actually try filtering paging etc, just to send data and see if it binds):

    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    [ServiceBehavior(IncludeExceptionDetailInFaults = true)]
    public class DataService : IDataService
    {
        public StateResult GetStatesForGrid(int startRowIndex, int maximumRows, string sortExpression, string filterExpression)
        {
            StateResult result = new StateResult();
            List<State> states = GetDataFromDb();
            result.Count = states.Count;
            result.Data = states;

            return result;
        }
If I use the ASMX service and call the same service method - it works fine. But not for WCF.

Another issue is, I tried calling the same method via PageMethod and use the .aspx page and method name in the declarative clientsettings - but that gives error that 'startIndex' not found.

Hi,

I am using drag and drop on the same RadTreeList. I removed paging on my Treelist and had

<Scrolling AllowScroll="true"/> in ClientSettings.
I am also using Ajax on it.
The Scrolling Functionality is normally working fine but It doesn't work,
When I try to drag an Item and Move it Up and Down to drop on something on the Same TreeList.
All the functionality is working fine when I don't have many items in the list,
I just need to get this scrolling thing done, If I have many items to display.
I tried many solutions online but all those seems to work with Silverlight.
Can you please help me with this? I wish I could have an event like 
AllowAutoScrollOnDragDrop which I use on RadGrid everytime.


<ClientSettings AllowAutoScrollOnDragDrop="true" >
<Scrolling AllowScroll="true" />
</ClientSettings>

Thanks in Advance,
Narender

My Radgrid is binding to a list<>, the sort and staticHeader working fine, however it cannot sort and lost staticHeader after export to excel. Can anyone help me? Thanks.


protected void btnExportToExcel_Click(object sender, ImageClickEventArgs e)
    {
        ConfigureExport(RadGrid1);
        RadGrid1.ExportSettings.FileName = "title";
        RadGrid1.MasterTableView.Caption = "title";
        RadGrid1.MasterTableView.ExportToExcel();
        ScriptManager.GetCurrent(Page).RegisterPostBackControl(btnExportToExcel);
    }

Hi,

I've created a simple application which usesz RadGrid to connectt o my Windows Azure SQL Database. When I run the site localy all the editing features of RadGrid work great.



But when I deploy to WA Web Sites when I click on the edit buton i.e. the loading panel just shows for a second and disappears.



I've attached the debugger from VS 2013 and the error I'm getting is:

Unhandled exception at line 15, column 16485 in http://my_app_name.azurewebsites.net/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=;;System.Web.Extensions,+Version=4.0.0.0,+Culture=neutral,+PublicKeyToken=31bf3856ad364e35:en-US:c9cbdec3-c810-4e87-846c-fb25a7c08002:ea597d4b:b25378d2;Telerik.Web.UI:en-US:9d967110-0dc5-4d20-a086-c7556058bb3c:16e4e7cd:f7645509:22a6274a:ed16cbdc:88144a7a:58366029

0x800a139e - JavaScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500

Any suggestions how to fix it?

Hi , I'm using radtreeview width checkbox="true" style .
in button click I want to retrievechecked Items .
I try to do this is 2 ways, but both have zero item counts . please check my code

In my radgrid, I have a linkbutton column which opens up a radwindow.  The radwindow shows some details and has some editable fields and a save button.  I have a requirement from the users that once they click the save button in the window, they want the window to save their changes then automatically load the next radgrid row's details.  How would I go about doing something like this?

Hi,

When i zoom out an orgchart at some point the connecting lines disappear. How do i make sure the connecting lines are always visible no matter how much i zoom out.

Thanks
-Sekhar

Hello,

I have a RadGrid that uses a Static header.



If useStaticHeader is set to True, when tabbing through the Grid it goes through the header only and ignore the data. If useStaticHeader is set to false, it tabs through the both header and data.

What can I do to make it Tab through both the Header and Data when useStaticHeader = true.

Hi ,

I am using Radscheduler with Wcf.
I am using Javascript to communicate with Wcf.

When i edit single recurrence in Radscheduler and call below function from javascript --
scheduler.deleteAppointment(appointment, false);
scheduler.insertAppointment(appointment);
and  it show error---
Cannot parse parentAppointment recurrence rule during delete operation. Appointment ID is 762, parentAppointment ID is 762. 

Please give the solution.

Thanks ,
Kuldeep