Introduction to Web Service in ASP.NET
Hi everyone in this article I’m explaining about How to make
Web Service in ASP.NET.
In this post we will teach you about web service using the
scenario when our application often require code to determine the number of
days, such as how long the customer is associated with us, also to convert from
a date of present days into days or years and so on.
In a normal application I need to write the business logic
repeatedly for the same requirements so due to the requirements you can write a
single web service for multiple application that allow an access method on any
platform used, so let us start with the basic.
What is web service?
A "web service is the communication platform between
two different or same platform applications that allows to use their web
What does different or same application and platform mean?
It means that I can create a web service in any language,
such as Java or other languages and that the language web service can be used
in a .Net based application and also a .Net web service or in another
application to exchange the information.
What does web method mean?
The method in web services always start with [webMethod]
attributes, it means that it is a web method that is accessible anywhere, the
same as my web application.
Start make a web service:
Step 1: Open
visual Studio >> File >> New Project >> ASP.NET Web Service
Application >> Provide the Application Name >> Click OK
Step 2: the
right click on solution explorer and click Add New item and you choose web
Then open the Webservice.cs class and write the following
method followed by [webMethod] attribute as in.
public int converttodaysweb(int day, int month, int year)
DateTime dt = new DateTime(year, month, day);
int datetodays = DateTime.Now.Subtract(dt).Days;
Now run the application
Now in the above we see our method that we are created in
the webservice.cs file, so click on that method and provide input values and
click on the "invoke" link as in.
The output will be as follows