ASP.NET MVC 扩展一个 XmlResult 的 ActionResult ，以便返回XML文件

namespace MvcAppOne.Extendsions
{
using System;
using System.Collections.Generic;
using System.Web.Mvc;
using System.IO;
using System.Xml.Serialization;

public class XmlResult : ActionResult
{
public XmlResult(Object data)
{
this.Data = data;
}

public Object Data { get; private set; }

public override void ExecuteResult(ControllerContext context)
{
if (Data == null)
{
//new EmptyResult().ExecuteResult(context);  // 这句代码可有可无
return;
}
context.HttpContext.Response.ContentType = "application/xml";
using (MemoryStream ms = new MemoryStream())
{
XmlSerializer xs = new XmlSerializer(Data.GetType());
xs.Serialize(ms, Data); // 把数据序列化到内存流中
ms.Position = 0;
using (StreamReader sr = new StreamReader(ms))
{
//读取流对象
context.HttpContext.Response.Output.Write(sr.ReadToEnd());
}
}
}
}
}