Question

使用Compact Framework和OpenNETCF.Net.Ftp lib

时遇到问题

我上传文件打开ftp（web中的测试服务器）并尝试连接到ftp并读取数据，但有异常。例如ftp://ftp.asu.ru/ 也许是谁知道我的问题??? 我的代码和截图：

//I use any open ftp and any file for test
Uri uri = new Uri(@"ftp://ftp.asu.ru/incoming/01/WebApp.zip");
FtpRequestCreator creator = new FtpRequestCreator();
FtpWebRequest.RegisterPrefix("ftp:", creator);
//right here, when create object, i think that i have a some problem - scr one
FtpWebRequest fwr = (FtpWebRequest)WebRequest.Create(uri);
fwr.Passive = true; 

try
 {
 using (
 //Exception to here - scr 2, 3
 FtpWebResponse response = (FtpWebResponse)fwr.GetResponse())
 ...

堆栈追踪：

 Exception NullReferenceException: at
 OpenNETCF.Net.Ftp.FtpWebRequest.SendCommand(String method, String parameter) at 
 OpenNETCF.Net.Ftp.FtpWebRequest.OpenPassiveDataConnection() at 
 OpenNETCF.Net.Ftp.FtpWebRequest.OpenDataConnection() at 
 OpenNETCF.Net.Ftp.FtpWebRequest.GetResponse() at 
 WmAutoUpdate.TransferManager.downloadFile(String url, Stream& s, String path, TransferProgress del) at 
 WmAutoUpdate.Updater.CheckForNewVersion() at 
 WmAutoUpdateExample.Program.Main()

我没有声望，你可以在这里看到所有图片 http://www.cyberforum.ru/csharp-net/thread1277137.html

OpenNETCF.Net.Ftp.FTPWebResponse（）：NullReferenceException

0 个答案: