This code doesn't restore mysql database anymore, any change within mysql?

[savedlema]

Greetings!
I have been using the code below to restore backups of mysql database taken utilizing the mysql dump for a few years, but suddenly, this does not restore database backups anymore. Is there any change within mysql?
code:

Dim myProcess As New Process()
            myProcess.StartInfo.FileName = "cmd.exe"
            myProcess.StartInfo.UseShellExecute = False
            myProcess.StartInfo.CreateNoWindow = True
            myProcess.StartInfo.WorkingDirectory = "C:\Program Files\MySQL\MySQL Server 5.6\bin\"
            myProcess.StartInfo.RedirectStandardInput = True
            myProcess.StartInfo.RedirectStandardOutput = True
            myProcess.Start()
            Dim myStreamWriter As StreamWriter = myProcess.StandardInput
            Dim mystreamreader As StreamReader = myProcess.StandardOutput

            myStreamWriter.WriteLine("mysql -u " & dbuser & " -p" & dbpassword & " " & dbname & " < " & locationOfBackup & "")
            myStreamWriter.Close()
            myProcess.WaitForExit()
            myProcess.Close()

Please note that the "& locationOfBackup" is a varialbe containing the location and the sql file name to be restore, no problem with this.
As I have pointed out, I have been able to restore backups with this until a few months ago. It now says backup restore was completed but there is actually nothing restored.

Server version: 5.6.22-log - MySQL Community Server (GPL)

Any help please?
Thanks!