Using an in-between class between Telerik.Reporting.Report and a report.

[Patrick]

Hello,
the enclosed code was working with the 2011 Q3 version of Telerik Reporting but not with the 2012 Q1 version.
The idea is to define a class that inherits from Telerik.Reporting.Report and to base the reports on this class instead of the Telerik one. The goal is to put in this class code that is common to more than one report to avoid duplicating code.
So I define a class like this:

using System;
using Telerik.Reporting;

namespace TestInheritedReport
{
  public class MyReport : Telerik.Reporting.Report
  {
  }
}

And now my report inherits from MyReport instead of Telerik.Reporting.Report.
The problem is now that every time I change something in the designer and click on the preview tab, I have an error message that says:

The service Telerik.Reporting.Design.Interfaces.IRootDesignerPresenter already
exists in the service container. Parameter name: serviceType

And the call stack is:

at System.ComponentModel.Design.ServiceContainer.AddService(Type serviceType,

ServiceCreatorCallback callback, Boolean promote)
at

System.ComponentModel.Design.ServiceContainer.AddService(Type serviceType,

ServiceCreatorCallback callback)
at

Telerik.Reporting.Design.VisualStudio.DependencyLoader.Initialize(IDesignerHost

host)
at Telerik.Reporting.Design.ReportRootDesigner.LoadDependencies()
at

Telerik.Reporting.Design.ReportRootDesigner.Initialize(IComponent

component)
at

System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent

component, String name, IContainer containerToAddTo)
at

System.ComponentModel.Design.DesignerHost.PerformAdd(IComponent component,

String name)
at

System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type

componentType, String name)
at

System.ComponentModel.Design.Serialization.DesignerSerializationManager.CreateInstance(Type

type, ICollection arguments, String name, Boolean addToContainer)
at

System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.CreateInstance(Type

type, ICollection arguments, String name, Boolean addToContainer)
at

System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager

manager, CodeTypeDeclaration declaration)
at

System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager

manager)
at

Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager

serializationManager)
at

System.ComponentModel.Design.Serialization.BasicDesignerLoader.BeginLoad(IDesignerLoaderHost

host)

In C#, I had to close the designer and open it again to make it work. In Oxygene (Delphi Prism), I had to close Visual Studio and open it again to make the designer work again; otherwise, it displays a black page with just a rectangle!
It's really a waste of time to work this way

Patrick

[Elian]

Hi Patrick,

Thank you for pointing out this problem to us, we will investigate the issue further on and fix it.

Side note: We have observed some dependency between this problem and the usage of events. Try to detach all the events from the code-behind and see if the issue still appears, if that may be of help.

We have updated your Telerik points as a token of gratitude for bringing this to our attention.

Greetings,
Elian
the Telerik team

[Patrick]

Hi Elian,
in my case this is not an issue with events because I don't attach any event, as you can see in the test case.
Patrick

[Steve]

Hello Patrick,

This was just an observation i.e. another case in which the problem surfaces. We are looking into the problem and would address it for subsequent internal build/service pack.

Kind regards,
Steve
the Telerik team

[Lucania]

I just encountered this, on a report with events. Detaching the events did seem to remove the problem, although it only happened occasionally anyway, so I can't be 100% sure.

[Abhi]

I'm using 2012 Q1 version of Telerik Reporting.

And I too had the same issue which Patrick has.
Please tell me when this issue is gonna fixed or any work around for it.

Thanks,
Abhi

[Steve]

Hi Abhi,

Closing the report designer and re-opening it is something we have found works. As stated previously, we would address the issue for the upcoming service pack (no date yet).

Regards,
Steve
the Telerik team

[Richard]

Unfortunately, I also have this problem and it occurs on every build of the project. Closing the designer and reopening does fix it albeit annoying...until the next build. 

[Jon]

I having the same issue too
Guess I have to revert back to the old version

[Steve]

Hi guys,

This problem has been addressed in the latest internal build which is available for download in your accounts.

All the best,
Steve
the Telerik team

[Patrick]

Hello,
this bug is corrected is Q2 2012
Patrick

[Emiliya]

Hi, I am still using Telerik Reporting Q1 2012 and I experience the same issue. I  also inherit an in-between class between Telerik.Reporting.Report and a report.
Unfortunately I am not allowed to use another Telerik Reporting version yet.
Do you have any suggestions how I can fix the problem without upgrading the Telerik Reporting Version?

Thank you!

[IvanY]

Hi Emiliya,

Up to your question: unfortunately you will have to either upgrade or downgrade to a version that does not have this issue since no workaround is available for the current version and problem.

Greetings,
IvanY
the Telerik team