Web8/Admin/ImageManager.ashx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
namespace Tc.Web.admin
{
    /// <summary>
    /// ImageManager 的摘要说明
    /// </summary>
    public class ImageManager : IHttpHandler
    {
        private HttpContext context;

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            this.context = context;
            try
            {
                RunMethod(context);
            }
            catch (Exception err)
            {
                throw err;
            }
        }
        private void RunMethod(HttpContext context)
        {
            try
            {
                switch (TypeName)
                {
                    case "DeletePic":
                        DeletePic();
                        break;
                }
            }
            catch(Exception e)
            {
                context.Response.Write(e.Message);
            }
        }
        //删除文件
        private void DeletePic()
        {
            string localfile = context.Request["Url"];
            string yfileName = localfile.Substring(localfile.LastIndexOf("/") + 1);

            string path = localfile.Substring(0, localfile.Length - yfileName.Length); 
           
            localfile = context.Request.MapPath(localfile);
            //y                       
            yfileName = "y_" + yfileName;
            string npth = context.Request.MapPath(path + "/" + yfileName);

            if (File.Exists(localfile))
            {
                //删除本地
                File.Delete(localfile);