You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application consumes an ASMX Web service. The Web service is hosted at the following URL. 
http：//www.contoso.com/TemperatureService/Convert.asmx 
You need to ensure that the client computers can communicate with the service as part of the <system.serviceModel> configuration. 
Which code fragment should you use？（）

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You plan to submit text that contains HTML code to a page in the application. 
You need to ensure that the HTML code can be submitted successfully without affecting other applications that run on the Web server. 
What should you do？（）