I am working with Windows Forms. I have a DataGridView with several DataGridViewTextBoxColumns. When I enter a cell in the DataGridView, ComboBox is displayed in top of that cell - I am using ComboBox instead of DataGridViewComboBoxColumn, because DataGridViewComboBoxColumn becomes very slow when filled with more than 1000 items (I have several thousand).
The problem is: when my ComboBox receives focus, I can't take focus from it with only keyboard. For example: I am typing somethning in the ComboBox. Now I want to jump on the next DataGridViewCell with the keyboard pressing arrow key (and perhaps, pressing Esc key before) - nothing happnes. ComboBox doesn't loose focus, it's not responding either to Esc key, nor arrow keys. I have to use mouse to move to the next cell.