c# – Web Request / Upload Failing at Very End

我的代码如下

using (var reqStream = req.GetRequestStream())
{
    BinaryWriter reqWriter = new BinaryWriter(reqStream);
    byte[] buffer = new byte[25600]; // 20KB Buffer
    int read = 0,bytesRead = 0;
    while ((read = memStream.Read(buffer,buffer.Length)) > 0) {
        reqWriter.Write(buffer); // at the very last loop,this line causes the error
        bytesRead += read;
        Debug.WriteLine("Percent Done: " + ((double)bytesRead / memStream.Length * 100) + "% " + DateTime.Now);
    }

我不知道你是否需要更多的代码,我不想在这里垃圾邮件代码.以下例外

System.Net.WebException was caught
  Message=The request was aborted: The request was canceled.
  Source=System
  StackTrace:
       at System.Net.ConnectStream.CloseInternal(Boolean internalCall,Boolean aborting)
       at System.Net.ConnectStream.System.Net.ICloseEx.CloseEx(CloseExState closeState)
       at System.Net.ConnectStream.Dispose(Boolean disposing)
       at System.IO.Stream.Close()
       at System.IO.Stream.Dispose()
       at QuickImageUpload.ViewModels.ShellViewModel.UploadImage(String filename,String contentType,Byte[] image) in D:ProjectsQuickImageUploadQuickImageUploadViewModelsShellViewModel.cs:line 190
  InnerException: System.IO.IOException
       Message=Cannot close stream until all bytes are written.
       Source=System
       StackTrace:
            at System.Net.ConnectStream.CloseInternal(Boolean internalCall,Boolean aborting)
       InnerException:

注意内部异常“无法关闭流,直到所有字节都被写入”.但我没有关闭任何流在这个循环有我吗？