C# 判断远程文件是否存在

2015/07/09 39745

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#region 判断远程文件是否存在 
       /// <summary> 
       /// 判断远程文件是否存在 
       /// </summary> 
       /// <param name="fileUrl"></param> 
       /// <returns></returns> 
       public static bool RemoteFileExists(string fileUrl) 
       { 
           HttpWebRequest re = null; 
           HttpWebResponse res = null; 
           try 
           { 
               re = (HttpWebRequest)WebRequest.Create(fileUrl); 
               res = (HttpWebResponse)re.GetResponse(); 
               if (res.ContentLength != 0) 
               { 
                   //MessageBox.Show("文件存在"); 
                   return true; 
               } 
           } 
           catch (Exception) 
           { 
               //MessageBox.Show("无此文件"); 
               return false; 
           } 
           finally 
           { 
               if (re != null) 
               { 
                   re.Abort();//销毁关闭连接 
               } 
               if (res != null) 
               { 
                   res.Close();//销毁关闭响应 
               } 
           } 
           return false; 
       } 
       #endregion