asp.net技术内幕的书配源码

				
				
				Sub Button_Click( s As Object, e As EventArgs )
				  If IsValid Then
				    Response.Redirect( "thankyou.aspx" )
				  End If
				End Sub
				
				
				
				
				RegularExpressionValidatorIgnoreCase.aspx
				
				
				
				
				Enter the address
				of your homepage:
				
								  id="txtHomepage"
				  Columns="50"
				  Runat="Server"/>
				
								  ControlToValidate="txtHomepage"
				  Display="Dynamic"
				  Text="Invalid URL!"
				  EnableClientScript="False"
				  ValidationExpression="(?i:http://\S+\.\S+)"
				  Runat="Server" />
				
				
				
								  Text="Submit"
				  OnClick="Button_Click"
				  Runat="Server"/>