Thank you for writing.
If you iterate the RadGridView.Rows
collection you are actually iterating the parent rows in the grid. That is why the cast is not successful. I have prepared a sample project for your reference where the CurrentRowChanged
is handled. If you click a child row, its parent row's first cell value is extracted successfully. Please refer to the attached zip file.
Feel free to use our support ticketing system in future where you can provide a sample project demonstrating the exact problem that you are facing. Thus, Telerik support will gladly assist you.
I hope this information helps.