title: Show listbox in datagridview
body: <p>I am trying to show listbox in but it didnt works, this code in datagridview_mouseClick event:
  With debugger it passes all lines below, but show nothing</p>
  
  <pre><code>ListBox lb = new ListBox();
   lb.Size = new Size(200, 300);
   lb.Location = new Point(500, 500);
   lb.Items.Add("a");
   lb.Items.Add("b");
   lb.BringToFront();
   listBox1.Show();
  </code></pre>
  
  <p>Any idea where is the problem?
  EDIT: My datagridview is in tableLayout and docked - could it be problem?<br>
  I am using winforms and c#                </p>