C# 支持docx上传
使用下面这个函数上传的时候 可以上传成功 但是docx格式有损坏 如何改善


protected bool UpLoadFileStream(HttpPostedFile postfile, string saveFilePath)
{
System.IO.Stream iStream = null;
// Buffer to read 10K bytes in chunk:
byte[] buffer = new Byte[10000];
int length = 0;
// Total bytes to read:
long dataToRead;
Stream GetStream = postfile.InputStream;
string fileName = System.IO.Path.GetFileName(postfile.FileName);
//string filepath = Server.MapPath(saveFilePath + "\\" + fileName);
if (File.Exists(saveFilePath) == false)
{
FileStream FS = new FileStream(saveFilePath, FileMode.CreateNew);
BinaryWriter BW = new BinaryWriter(FS);
try
{
dataToRead = GetStream.Length;//iStream.Length;
while (dataToRead > 0)
{
// Verify that the client is connected.
if (Response.IsClientConnected)
{
// Read the data in buffer.
length = GetStream.Read(buffer, 0, 10000);

// Write the data to the current output stream.
BW.Write(buffer, 0, 10000);
//buffer = new Byte[10000];
dataToRead = dataToRead - length;
}
else
{
//prevent infinite loop if user disconnects
dataToRead = -1;
}
}
FS.Flush();
FS.Close();
BW.Flush();
BW.Close();
}
catch
{
return false;
}
finally
{
if (iStream != null)
{
iStream.Close();
}
}
}
else
{
return false;
}
return true;
}

[解决办法]
我帮你重新组织了下代码，删掉了没用的部分，最重要的是，不要用 BinaryWriter 来写入，stream 直接就可以 write，就是 BinaryWriter 破坏的文件结构

C# code

protected bool UpLoadFileStream(HttpPostedFile postfile, string saveFilePath){    if (File.Exists(saveFilePath))    {        return false;    }    try    {        using (FileStream FS = new FileStream(saveFilePath, FileMode.CreateNew))        {            byte[] buffer = new Byte[10000];            int length = 0;            while ((length = postfile.InputStream.Read(buffer, 0, buffer.Length)) > 0)            {                FS.Write(buffer, 0, length);            }        }    }    catch (Exception)    {        return false;    }    return true;}
[解决办法]
探讨

我帮你重新组织了下代码，删掉了没用的部分，最重要的是，不要用 BinaryWriter 来写入，stream 直接就可以 write，就是 BinaryWriter 破坏的文件结构