title: Event that fires during DataGridViewComboBoxColumn SelectedIndexChanged
body: <p>I have <code>DataGridView</code> with two columns. The first column is <code>TextBoxCol(DataGridViewTextBoxColumn)</code> and the Second one is <code>ComboBoxCol(DataGridViewComboBoxColumn)</code>.</p>
  
  <p>How can I change the value of <code>TextBoxCol</code> when <code>ComboBoxCol</code> changes its selected index value?
  (This should happen when selected index changed in <code>ComboBoxCol</code>. Not after leaving the column, like <code>dataGridView_CellValueChanged</code>)</p>
  
  <p>I have read one topic with almost the same problem that I am having but I dont understand the answer(which should be correct base on the check mark). Here's the link. <a href="https://stackoverflow.com/questions/4154713/how-to-create-event-handler-for-datagridviewcomboboxcolumn-in-a-data-grid-view-i">-Almost same topic</a></p>