How does the Vsix extension prevent Visual Studio from capturing keyboard events

[weiyoucheng]

My plugin has a user control in a window, which includes a DataGrid control. I added the PreviewKeyDown event to the DataGrid control. When I pressed the Esc key while editing a DataGrid cell, the DataGrid.PreviewKeyDown event did not capture any event information, but was captured by Visual Studio. How to prevent Visual Studio from capturing keyboard events so that the DataGrid.PreviewKeyDown event can be captured