How to create Sharepoint Web Application Programmatically?

Sometimes we want to create Sharepoint web application programmatically (I needed it while I was writing an installer).

The following code will help you in this regard.

public static void Create()

        {

            SPWebApplication newApplication = null;

            int port = 2020;

            string userName = "xdev\\mujtaba";

            string userPass = "p@ssw0rd2";

            SPWebApplicationBuilder appBuilder = new SPWebApplicationBuilder(SPFarm.Local);

            int myPort = Convert.ToInt16(port.ToString());

            appBuilder.Port = myPort;

            appBuilder.ApplicationPoolId = "My Application - " + port.ToString(); //Used to show in the sharepoint application list.

            appBuilder.ApplicationPoolUsername = userName;

            System.Security.SecureString password = new System.Security.SecureString();

            char[] pass = userPass.ToCharArray();

            foreach (char c in pass)

                password.AppendChar(c);

            appBuilder.ApplicationPoolPassword = password;

            appBuilder.CreateNewDatabase = true; // Create new database           

            appBuilder.DatabaseName = "wss_site" + port.ToString() + "_content";    // database name

            //webAppBuilder.DatabaseServer = webAppBuilder.DefaultZoneUri.Host;  //Host name/computer name          

            appBuilder.UseNTLMExclusively = true;  // Use NTLM authentication

            appBuilder.ServerComment = "My Application - " + port.ToString();

            newApplication = appBuilder.Create(); // Create new web application

            newApplication.Name = "My Application - " + port.ToString();

            newApplication.Provision();           //Provision it into web farm

            Console.WriteLine("Application Successfully created.");

        }

You will have to add reference to Microsoft.Sharepoint.dll to you project.

Enjoy it.