title: How to focus the child control when Tab is pressed?
body: <p>I have a custom <code>TextBox</code> control and this control has a windows default <code>TextBox</code> control inside of it. Since it has a child control when Tab is pressed, the cursor doesn't focus directly to the child control. It is required to double press the Tab key.So first Tab is going to the parent and second is to the child. How can I do it by one Tab press?</p>
  
  <p><strong>Custom TextBox is:</strong></p>
  
  <pre><code>    class MyTextBox : Control
      {
          TextBox innerBox;
          public MyTextBox()
          {
              //.....
              innerBox = new TextBox();
              Controls.Add(innerBox);
              innerBox.Parent = this;
              innerBox.TabIndex = this.TabIndex;
              //.....
          }
          //.....
      }
  </code></pre>