<com:TContent ID="Content"> <com:TPanel ID="panel1" DefaultButton="button1"> Panel 1: <com:TTextBox ID="textbox1" /> <com:TButton ID="button1" Text="Button 1" OnClick="button_clicked" /> </com:TPanel> <com:TPanel ID="panel2" DefaultButton="button2"> Panel 2: <com:TTextBox ID="textbox2" /> <com:TButton ID="button2" Text="Button 2" OnClick="button_clicked" /> </com:TPanel> <com:TLabel ID="label1" Text="Label 1" /> </com:TContent>