Scrollbar loses focus when datagridview refreshs its content

my DataGridView refreshes after one second its content. the refresh is triggered via a thread/invoke. when i grab the scrollbar and the refresh starts i lose the focus and i have to regrab the scrollbar again. doing that every se开发者_开发知识库cond is quite annoying. has anyone a hint how to do it that way i dont lose the focus? as a concrete example, like the task manager does it.