title: Value doesn't show up on a DataGridViewComboBox control
body: <p>After setting the values in the <code>DataGridView</code>, they don't show up on the control even though I can access them through the <code>Value</code> property.</p>
  
  <p>The problem is that there is no default <code>Value</code> in the <code>ComboBox</code> cells.</p>
  
  <pre><code>void ComboBoxColumn()
  {
      string[] values =  { "one", "two", "three" };
      string columnName = "Test";
      var column = new DataGridViewComboBoxColumn();
      column.Name = columnName;
      column.ValueType = typeof(string);
  
      foreach(string item in values)
      {
          column.Items.Add(item);
      }
  
      Grid.Columns.Add(column);
  
      // problematic part
      foreach(DataGridViewRow row in Grid.Rows)
      {
          row.Cells[columnName].Value = values[0];
      }
  }
  </code></pre>