According to the provided brief information, it is not clear enough what is the exact scenario that you have on your end and how exactly you use the ClearSelection method? I have noticed that you have opened a support ticket on the same topic. Please see the reply there. Please, see our answer there for more information.
We kindly ask you to use just one thread for a specific problem to contact us. Posting the same questions numerous times slows down our response time because we will need to review and address two or more tickets instead of one. Moreover, threads are handled according to license and time of posting, so if it is an urgent problem, we suggest you use a support ticket, which would be handled before a forum thread. Thank you for your understanding.
However, I am posting the reply here as well in order the community to benefit from it. While the grid is in a BeginUpdate/EndUpate block, its updates are suspended. Hence, clearing the selection or setting the CurrentRow may not take effect. These actions have to be performed after calling the EndUpdate method.
I hope this information helps.
Dess | Tech Support Engineer, Sr.
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