title: Can't enable ComboBox
body: <p>I have a <code>ComboBox</code> which I am placing in a <code>SourceGrid3</code> control, but for some reason I can't set the <code>Enabled</code> attribute to <code>true</code>.</p>
  
  <p>Here is my code.</p>
  
  <pre><code>ComboBox cboMyComboBox = new ComboBox(); 
  cboMyComboBox.Enabled = true;
  cboMyComboBox.BeginUpdate(); 
  cboMyComboBox.Items.AddRange(new object[] { "Accept", "Reject" });
  cboMyComboBox.EndUpdate();
  cboMyComboBox.DropDownStyle = ComboBoxStyle.DropDownList;
  SourceGrid3.Cells.Real.CellControl thisControl = new SourceGrid3.Cells.Real.CellControl(cboMyComboBox);
  
  myGrid[row, column] = thisControl;
  </code></pre>
  
  <p>(<code>myGrid</code> is the <code>SourceGrid3</code> grid)</p>
  
  <p>For some reason when the last line gets executed, the <code>Enabled</code> value gets turned to <code>false</code> and subsequent attempts to change it (like setting it back to <code>true</code>) don't have any effect.</p>
  
  <p>Even if I try and change the value to <code>true</code> in the Visual Studio debugger, it won't allow it and simply changes it back to <code>false</code>.  I have looked for a <code>ReadOnly</code> attribute for this field but there doesn't seem to be one (unless I'm missing something) besides I can change other attributes (like <code>RightToLeft</code> from <code>No</code> to <code>Yes</code>)</p>
  
  <p>Is there anything else I can check that might cause this control to be forced to <code>false</code> ?</p>