Hello Waleed Seada,
We have two options.
1. If you believe that there is a problem with the QDSCV, can you prepare a runnable sample project that isolates the problem and reproduces this behavior. We will then take a look at it and see what is going on.
2. Alternatively, you can develop the same functionality without
the QDSCV, i.e. without any Telerik controls, and check whether the behavior would be the same or different. You can use Microsoft's DomainDataSourceView collection which is the Microsoft's analog of Telerik's QDSCV, i.e. it is Microsoft's collection that is used for MVVM purposes. You can learn more about this collection from this blog post
Let us know once you have one of the two options implemented.
Thanks in advance.
the Telerik team
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