====== Disable input editing ======
  * Sometimes we need disable input for editing, but property readonly disallow send data from server (for example, when we use calendar extender).
  * Example shows how we can disallow editing via javascript.
<code asp>

<asp:TextBox ID="txb_Date" runat="server" onKeyPress="javascript: return false;" onPaste="javascript: return false;" />
<ajaxToolkit:CalendarExtender ID="txb_Date_CalendarExtender" runat="server" PopupButtonID="txb_dateFrom" TargetControlID="txb_Date">
</ajaxToolkit:CalendarExtender>

</code>

===== Access date from calendarextender =====

  * Access date from calendarextender when readonly property is set.

<code csharp>

txb_Date.Text = Request[txb_Date.UniqueID];

</code>