How to Create a very Basic Web Service in C# (Visual Studio)

In this blog I am going to show how we could create a very basic Web Service in c#.

1. First of all Open your Visual Studio and GoTo File and Select New Empty Website and rename and open your new empty website.

2. For adding the web service right-click on the solution and then Select Add- Add New Item- Select Web Service(asmx) file, you will get it's class file open as in figure, remove "Hello World" web default method and add code as below::

using System;

using System.Web.Services;

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

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

// 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 Service : System.Web.Services.WebService

{

    public Service()

    {

        //Uncomment the following line if using designed components 

        //InitializeComponent(); 

    }

    string[,] stocks = {{"Infy","Infosys","122.35"} ,

    {"TCS","Tata Consultancy Servcices","98.22"},

    {"ASN","Aayush Singh","134.31"},

    {"Wipro","Wipro Limited","117.88"}

                       };

    [WebMethod]

    public double getPrice(string symbol)

    {

        for (int i = 0; i < stocks.GetLength(0); i++)

        {

            if (String.Compare(symbol, stocks[i, 0], true) == 0)

            {

                return Convert.ToDouble(stocks[i, 2]);

            }

        }

        return 0;

    }

    [WebMethod]

    public string getName(string symbol)

    {

        for (int i = 0; i < stocks.GetLength(0); i++)

        {

            if (String.Compare(symbol, stocks[i, 0], true) == 0)

            {

                return stocks[i, 1];

            }

        }

        return "Stock not found";

    }

}

3. And at the end check your WebService(.asmx) code in your solution, it sholud be like the same way below in .asmx page::

<%@ WebService Language="C#" CodeBehind="~/App_Code/Service.cs" Class="Service" %>

4. Now, run your Service.cs page. You will get list of all your Web Methods in browser, click on your method and enter data and press Invoke button you will get result as shown below::