[Solved] FileStream throws File not found

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Ok, I found the problem: My server-side program interefered with my client-side program. Here’s the fixed code for the SendFile code of my client program:

public void SendFile(String fileName, long fileSize, NetworkStream io)
    {
        SendFileNameToServer();
        SendFileSizeToServer();

        byte[] fileData;

        try
        {
            FileStream openFileStream = File.OpenRead(fileName);
            BinaryReader bReader = new BinaryReader(openFileStream);

            Int32 remainingSize = Convert.ToInt32(_fileSize);


            do
            {
                fileData = bReader.ReadBytes(BUFSIZE);
                io.Write(fileData, 0, BUFSIZE);
                remainingSize -= BUFSIZE;
            } while (remainingSize > BUFSIZE);

            do
            {
                fileData = bReader.ReadBytes(remainingSize);
                io.Write(fileData, 0, remainingSize);
                remainingSize -= remainingSize;
            } while (remainingSize > 0);

            openFileStream.Flush();
            bReader.Close();
            openFileStream.Close();
            io.Flush();
            io.Close();
        }
        catch (Exception)
        {
            throw new Exception();
        }
    }

Here’s the ReceiveFile code for my server:

public void ReceiveFile(String fileName, NetworkStream io)
    {
        // TO DO Din egen kode
        byte[] fileData = new byte[BUFSIZE];

        FileStream writeFileStream = new FileStream(LIB.extractFileName(fileName), FileMode.Create);
        BinaryWriter bWrite = new BinaryWriter(writeFileStream);

        int bytesRead = 0;
        long remainingSize = Convert.ToInt32(_fileSize);

        do
        {
            Console.WriteLine("Remaining number of bytes: {0}", remainingSize);
            bytesRead = io.Read(fileData, 0, BUFSIZE); // Read max 1000 bytes from server via socket (actual value is placed in "bytesRead"
            bWrite.Write(fileData, 0, bytesRead); // write the received bytes into file. the number of received bytes is placed in "bytesRead"
            remainingSize -= bytesRead;
        }
        while (remainingSize > 0);

        writeFileStream.Flush();
        writeFileStream.Close();
        bWrite.Close();
    }

Again, thank you everyone who answered my post!

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solved FileStream throws File not found