Implement a Web Service in .NET

Explain with code sample how to Implement a Web Service in .NET?

Following is code in VBScript and C# both respectively.

In VBScript :

<%@ WebService Language="VBScript" Class="KmToMConvert" %>

Imports System

Imports System.Web.Services

Public Class KmToMConvert :Inherits WebService

   <WebMethod()> Public Function KilometerToMeter(ByVal Kilometer As String) As String 

         return (Kilometer * 1000)

         end function

end class

In C# :

[WebService(Namespace = http://tempuri.org/)]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[System.ComponentModel.ToolboxItem(false)]

// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 

// [System.Web.Script.Services.ScriptService]

public class Service1 : System.Web.Services.WebService

{

     [WebMethod]

     public string HelloWorld()

     {

            return "Hello World";

     }

}

Private virtual methods in C#.NET

Can private virtual methods be overridden in C#.NET? 


No, moreover, you cannot access private methods in inherited classes, They have to be protected in the base class to allow any sort of access. 

Multiple inheritance in C#.Net

Does C#.Net support multiple inheritance?


No, C#.Net does not support multiple inheritance,  but we can use interfaces to achieve functionality of multiple inheritance.

What is serialization

Explain serialization ?


Serialization is a process of converting an object into a stream of bytes. .Net has 2 serializers namely XMLSerializer and SOAP/BINARY Serializer. Serialization is maily used in the concept of .Net Remoting.

How to force garbage collector to run

Is this possible to force garbage collector to run? 


Yes, we can force garbage collector to run using following code.
System.GC.Collect().