ActionResult解析

原文地址：http://blog.csdn.net/gulijiang2008/article/details/7642213

ActionResult是一个抽象类, 在Action中返回的都是其派生类.下面是我整理的ASP.NET MVC 1.0 版本中提供的ActionResult派生类:

类名	抽象类	父类	功能
ContentResult			根据内容的类型和编码,数据内容.
EmptyResult			空方法.
FileResult	abstract		写入文件内容,具体的写入方式在派生类中.
FileContentResult		FileResult	通过 文件byte[] 写入文件.
FilePathResult		FileResult	通过 文件路径 写入文件.
FileStreamResult		FileResult	通过 文件Stream 写入文件.
HttpUnauthorizedResult			抛出401错误
JavaScriptResult			返回javascript文件
JsonResult			返回Json格式的数据
RedirectResult			使用Response.Redirect重定向页面
RedirectToRouteResult			根据Route规则重定向页面
ViewResultBase	abstract		调用IView.Render()
PartialViewResult		ViewResultBase	调用父类ViewResultBase 的ExecuteResult方法.  重写了父类的FindView方法.  寻找用户控件.ascx文件
ViewResult		ViewResultBase	调用父类ViewResultBase 的ExecuteResult方法.  重写了父类的FindView方法.  寻找页面.aspx文件

五.实例应用

1.添加Controller

安装了ASP.NET MVC后, 在项目上点击右键会找到添加Controller项:

2.添加Action

下面这个类提供了返回各种类型的ActionResult的Action实例:

public class DemoController : Controller
    {

        /// <summary>
        /// http://localhost:1847/Demo/ContentResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult ContentResultDemo()
        {
            string contentString = "ContextResultDemo!";
            return Content(contentString);
        }

        /// <summary>
        /// http://localhost:1847/Demo/EmptyResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult EmptyResultDemo()
        {
            return  new EmptyResult();
        }

        /// <summary>
        /// http://localhost:1847/Demo/FileContentResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult FileContentResultDemo()
        {
            FileStream fs = new FileStream(Server.MapPath(@"/resource/Images/1.gif"), FileMode.Open, FileAccess.Read);
            byte[] buffer = new byte[Convert.ToInt32(fs.Length)];
            fs.Read(buffer, 0, Convert.ToInt32(fs.Length) );
            return File(buffer, @"image/gif");
        }

        /// <summary>
        /// http://localhost:1847/Demo/FilePathResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult FilePathResultDemo()
        {
            //可以将一个jpg格式的图像输出为gif格式
            return File(Server.MapPath(@"/resource/Images/2.jpg"), @"image/gif");
        }

        /// <summary>
        /// http://localhost:1847/Demo/FileStreamResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult FileStreamResultDemo()
        {            
            FileStream fs = new FileStream(Server.MapPath(@"/resource/Images/1.gif"), FileMode.Open, FileAccess.Read);
            return File(fs, @"image/gif");
        }

        /// <summary>
        /// http://localhost:1847/Demo/HttpUnauthorizedResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult HttpUnauthorizedResultDemo()
        {
            return new HttpUnauthorizedResult();
        }

        /// <summary>
        /// http://localhost:1847/Demo/JavaScriptResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult JavaScriptResultDemo()
        {
            return JavaScript(@"alert(""Test JavaScriptResultDemo!"")");
        }

        /// <summary>
        /// http://localhost:1847/Demo/JsonResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult JsonResultDemo()
        {
            var tempObj = new { Controller = "DemoController", Action = "JsonResultDemo" };
            return Json(tempObj);
        }

        /// <summary>
        /// http://localhost:1847/Demo/RedirectResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult RedirectResultDemo()
        {
            return Redirect(@"http://localhost:1847/Demo/ContentResultDemo");
        }

        /// <summary>
        /// http://localhost:1847/Demo/RedirectToRouteResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult RedirectToRouteResultDemo()
        {
            return RedirectToAction(@"FileStreamResultDemo");
        }

        /// <summary>
        /// http://localhost:1847/Demo/PartialViewResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult PartialViewResultDemo()
        {
            return PartialView();
        }

        /// <summary>
        /// http://localhost:1847/Demo/RedirectToRouteResultDemo
        /// </summary>
        /// <returns></returns>
        public ActionResult ViewResultDemo()
        {
            //如果没有传入View名称, 默认寻找与Action名称相同的View页面.
            return View();
        }

    }