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？（）

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？（）

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You write the following code fragment. （Line numbers are included for reference only.）

You need to ensure that the error message displayed in the validation control is also displayed in the validation summary list. 
What should you do？（）