Событие GridView.ShownEditor можно использовать для обнаружения изменений редактора.
Пример:
private void gridView1_ShownEditor(object sender, EventArgs e)
{
GridView view = sender as GridView;
if (view.ActiveEditor is DevExpress.XtraEditors.TextEdit)
{
view.ActiveEditor.EditValueChanged += ActiveEditor_EditValueChanged;
view.ActiveEditor.Leave += ActiveEditor_Leave;
}
}
void ActiveEditor_EditValueChanged(object sender, EventArgs e)
{
}
void ActiveEditor_Leave(object sender, EventArgs e)
{
}