MVC controller Common method return type

Common methods of Controller

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSYSTEM.WEB.MVC;usingSystem.Web.Mvc.Ajax;usingSystem.IO;namespacemvcrazordemo{ Public classDemocontroller:controller {/// <summary>        /// http://localhost: 1847/demo/contentresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Contentresultdemo () {stringContentstring ="contextresultdemo! See the Controllers/democontroller.cs file, which contains the usage of all types ActionResult."; returnContent (contentstring); }        /// <summary>        /// http://localhost: 1847/demo/emptyresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Emptyresultdemo () {return  NewEmptyresult (); }        /// <summary>        /// http://localhost: 1847/demo/filecontentresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Filecontentresultdemo () {//Create a file streamFileStream fs =NewFileStream (Server.MapPath (@"/content/a.jpg"), FileMode.Open, FileAccess.Read); //defines a buffer array            byte[] buffer =New byte[Convert.ToInt32 (fs.            Length)]; Fs. Read (Buffer,0, Convert.ToInt32 (fs.                        Length)); returnFile (Buffer,@"Image/gif"); }        /// <summary>        /// http://localhost: 1847/demo/filepathresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Filepathresultdemo () {//you can export an image in JPG format to GIF format            returnFile (Server.MapPath (@"/content/a.jpg"),@"Image/gif"); }        /// <summary>        /// http://localhost: 1847/demo/filestreamresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Filestreamresultdemo () {FileStream fs=NewFileStream (Server.MapPath (@"/content/a.jpg"), FileMode.Open, FileAccess.Read); returnFile (FS,@"Image/gif"); }        /// <summary>        /// http://localhost: 1847/demo/httpunauthorizedresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Httpunauthorizedresultdemo () {//returns an unauthenticated 401            return NewHttpunauthorizedresult (); }        /// <summary>        /// http://localhost: 1847/demo/javascriptresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Javascriptresultdemo () {returnJavaScript (@"alert ("Test javascriptresultdemo!")"); }        /// <summary>        /// http://localhost: 1847/demo/jsonresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Jsonresultdemo () {varTempobj =New{Controller ="Democontroller", Action ="Jsonresultdemo" }; returnJson (Tempobj,jsonrequestbehavior.allowget); }        /// <summary>        /// http://localhost: 1847/demo/redirectresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Redirectresultdemo () {returnRedirect (@"Http://localhost:1847/Demo/ContentResultDemo"); }        /// <summary>        /// http://localhost: 1847/demo/redirecttorouteresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Redirecttorouteresultdemo () {returnRedirecttoaction (@"Filestreamresultdemo"); }        /// <summary>        /// http://localhost: 1847/demo/partialviewresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Partialviewresultdemo () {returnPartialview (); }        /// <summary>        /// http://localhost: 1847/demo/viewresultdemo/// </summary>        /// <returns></returns>         PublicActionResult Viewresultdemo () {//If no view name is passed in, the view page with the same action name is searched by default.            returnView (); }    }}

MVC controller Common method return type