從外部服務器通過Asp.net和C下載文件＃

首先，我上傳了一個文件在外部服務器，並從該服務器得到一個網址。現在我想通過該網址從外部服務器上下載該文件我通過asp.net和c＃從該服務器獲得。我寫了一個C＃代碼來下載該文件，但在那個過程中，我得到了一個異常「類型'System.OutOfMemoryException'的異常被拋出」。下面是我寫的下載C＃代碼：從外部服務器通過Asp.net和C下載文件＃

double dlsize=0; 
string Url = "http://www.sample.com/download.zip"; \\File Size: 75MB 
int lastindex = Url.LastIndexOf("/"); 
string TempUrlName = Url.Substring(lastindex + 1, Url.Length - (lastindex + 1)); 

WebRequest oWebRequest = WebRequest.Create(Url); 
oWebRequest.Timeout = -1; 
WebResponse oWebResponse = oWebRequest.GetResponse(); 

if (oWebResponse.ContentType != "text/html; charset=UTF-8") 
{ 
    string myFile = oWebResponse.Headers.Get("Content-Length"); 
    int TempmyFile = Convert.ToInt32(myFile); 
    double bytes_total = Convert.ToDouble(TempmyFile); 
    dlSize = Convert.ToDouble(bytes_total/(1024 * 1024)); 

    System.IO.MemoryStream oMemoryStream = new MemoryStream(); 
    byte[] buffer = new byte[4096]; 

    using (System.IO.Stream oStream = oWebResponse.GetResponseStream()) 
    { 
     int Count = 0; 
     do 
     { 
      Count = oStream.Read(buffer, 0, buffer.Length); 
      oMemoryStream.Write(buffer, 0, Count); 
     } while (Count != 0); 
    } 

    System.IO.FileStream oFileStream = new System.IO.FileStream("C:\Documents and Settings\arun\Desktop\New Folder\download.zip", System.IO.FileMode.Create); 
    oMemoryStream.WriteTo(oFileStream); 
    oFileStream.Flush(); 
    oFileStream.Close(); 
    oMemoryStream.Flush(); 
    oMemoryStream.Close(); 
    oWebResponse.Close(); 
}

來源

2011-02-24 Anbuselvan

嘗試使用Web客戶端（http://msdn.microsoft.com /en-us/library/system.net.webclient%28v=vs.80%29.aspx）而不是HttpWebRequest/HttpWebResponse，因爲您會發現它更容易下載。如果你也可以發佈堆棧跟蹤，你會得到更好的迴應 – Kane 2011-02-24 12:02:01

它會更容易做到這一點是這樣的：

WebClient webClient = new WebClient(); 
webClient.DownloadFile(remoteFileUrl, localFileName);

來源

2011-02-24 12:02:56 Alex

從外部服務器通過Asp.net和C下載文件＃

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