我在sharepoint服务器上运行代码，这令我头疼 . 问题在于Filstream.create会抛出此异常
System.IO上的异常.__ . Error.WinIOError（Int32 errorCode，String maybeFullPath）在System.IO.FileStream.Init（字符串路径，FileMode模式，FileAccess访问，Int32权限，布尔useRights，FileShare共享，Int32 bufferSize，FileOptions选项，SECURITY_ATTRIBUTES secAttrs，String msgPath，Boolean bFromProxy，Boolean useLongPath，Boolean checkHost）at System.IO.FileStream..ctor（String path，FileMode mode，FileAccess access，FileShare share，Int32 bufferSize，FileOptions options，String msgPath，Boolean bFromProxy）at System .IO.FileStream..ctor（String path，FileMode mode）at
抛出异常的代码块是
using (FileStream fs = new FileStream(TargetPath, FileMode.Create))
{
BinaryReader bReader = new BinaryReader(readStream);
BinaryWriter bWriter = new BinaryWriter(fs);
int allBytes = (int)readStream.Length;
bWriter.Write(bReader.ReadBytes(allBytes));
//bReader.Close();
//bWriter.Close();
}
有没有人有一个想法，关于如何去做？