Editing in the C1FlexGrid is similar to editing in Excel.

Pressing F2 or double-clicking a cell puts the grid into full-edit mode. In this mode, the cell editor remains active until the user presses Enter, Tab, or Escape, or until he moves the selection with the mouse. In full-edit mode, pressing the cursor keys does not cause the grid to exit edit mode.

Typing text directly into a cell puts the grid in quick-edit mode. The cell editor remains active until the user presses Enter, Tab, or Escape, or any arrow keys. In quick-edit mode, pressing the cursor keys causes the grid to exit edit mode.

While editing, the user can toggle between full and quick modes by pressing the F2 key.