<%@ MasterPage="" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" > <com:THead ID="Head"> <meta http-equiv="content-language" content="en"/> <meta http-equiv="Expires" content="0"> </com:THead> <body> <com:TForm> <com:TTextBox MaxLength="50" /> <com:TTextBox ID="CustomerNumber" /> <com:TButton Text="Search" /> <com:TDataTypeValidator DataType="Integer" ControlToValidate="CustomerNumber" ErrorMessage="Customernumber must be a number." /> </com:TForm> </body> </html>