Upload file Error System.Net.ProtocolViolationException: The contentlength byte must be written to the request stream before calling [Begin]getresponse.

Error when uploading a file.

Error:

System.Net.ProtocolViolationException: The contentlength byte must be written to the request stream before calling [Begin]getresponse.

Cause: The length of the pass is inconsistent with the contentlength you write in the header file.

Workaround:

Ensure that the contentlength is consistent with the transmitted data length.

Instance:

FileStream filestream= New FileStream (FilePath, FileMode.Open, FileAccess.Read, Fileshare.readwrite))
byte[] Sendstreamdata = Streamtobyte (signfile);//Transfer files into byte[]

Post (FileStream);//This function is used to transfer the file stream, here will be an error, because the current stream's initial position is the end position.

The reason I showed this file is that the file stream has been read by me and has not been repositioned.

Plus the positioning code, problem solving.

Modify the following:

FileStream filestream= New FileStream (FilePath, FileMode.Open, FileAccess.Read, Fileshare.readwrite))
byte[] Sendstreamdata = Streamtobyte (signfile);//Transfer files into byte[]

Filestream.seek (0, Seekorigin.begin);//position to initial position. The new Code

Post (FileStream);//This function is used to transfer file streams,

Upload file Error System.Net.ProtocolViolationException: The contentlength byte must be written to the request stream before calling [Begin]getresponse.