Data binding and CommandArgument

 Hi,
I have created a UserControl where I bind the text property of a TextBox to the CommandArgument of a Button.
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs" Inherits="DataBinding.WebUserControl1" %>
<asp:Label ID="Label1" runat="server" Text="CommandArgument to send:"></asp:Label>
<asp:TextBox Id="myTextBox" runat="server" />
<asp:Button Text=&q ...