App_Code/UpLoadIMG.cs

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using System;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Net;
using System.Web;

//下载于51aspx.com

/// <summary>
///UpLoadIMG 的摘要说明
/// </summary>
public class UpLoadIMG
{
    /**/
    /// <summary>
    /// 根椐Html内空自动识别图像文件,并下载到服务器指定目录
    /// </summary>
    /// <param name="strHTML"></param>
    /// <param name="path"></param>
    /// <returns></returns>
    public string SaveUrlPics(string imgurlAry, string path)
    {
        string strHTML="";
        try
        {
            string preStr = "";
            //WebRequest req = WebRequest.Create(imgurlAry[i]);
            preStr = System.DateTime.Now.ToString() + "_";
            preStr = preStr.Replace("-", "");
            preStr = preStr.Replace(":", "");
            preStr = preStr.Replace(" ", "");
            WebClient wc = new WebClient();
            wc.DownloadFile(imgurlAry, HttpContext.Current.Server.MapPath(path + "/" + preStr + imgurlAry.Substring(imgurlAry.LastIndexOf("/") + 1)));
            strHTML = preStr + imgurlAry.Substring(imgurlAry.LastIndexOf("/") + 1);
        }
        catch (Exception ex)
        {
            //return ex.Message;
        }
        return strHTML;
    }
}