Problem while dragging column header to group panel

Hello Rouf,

Based on the screenshots it would be hard to guess the exact cause of the issue.

However, one possible reason is the data-binding of RadGrid. Please make sure that you are using advanced data binding. You can use either declarative data source or provide the data via the NeedDataSource event. Check out the following articles that elaborate in more detail for both approaches.

• Declarative DataSource
• Using NeedDataSource event

With that said, make sure not to use simple data binding. Remove all calls to DataBind() from the code-behind.

Try to apply the modifications and see how the behavior changes. In case the issue persists please send the markup of the page with the related code behind so we can examine it.

Regards,
Viktor Tachev
Telerik