title: OpenFileDialog does not appear
body: <p>I have this DataGridView and I want every time you click on the <em>Browse From File...</em>  an openFileDialog to open.  </p>
  
  <p><img src="https://i.stack.imgur.com/y4IaS.png" alt="enter image description here"></p>
  
  <p>Made this so far but it does not work.</p>
  
  <pre><code>private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
  {
     string bbb = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
     if (bbb == "Browse From File...")
     {
         openFileDialog2.ShowDialog();
     }
  </code></pre>
  
  <p>Tried also these but nothing:</p>
  
  <pre><code>if (e.ColumnIndex.Equals = "Browse From File...")
  if (dataGridView1.SelectedCells = "Browse From File...")   
  if ((string)dataGridView1.SelectedCells[0].Value == "Browse From File...")
  if (dataGridView1.Rows[1].Cells["Browse From File..."].Value.ToString() == "Browse From File...")
             {
                 //openFileDialog2.ShowDialog();
             }
  </code></pre>