Dim conn As New MySqlConnection
Dim cmd As New MySqlCommand
 
Dim SQL As String
 
Dim FileSize As UInt32
Dim rawData() As Byte
Dim fs As FileStream
 
conn.ConnectionString = "server=127.0.0.1;" _
    & "uid=root;" _
    & "pwd=12345;" _
    & "database=test"
 
Try
    fs = New FileStream("c:\image.png", FileMode.Open, FileAccess.Read)
 
    FileSize = fs.Length      '  ##########   Hier ein Fehler ###############
 
    rawData = New Byte(FileSize) {}
    fs.Read(rawData, 0, FileSize)
    fs.Close()
 
    conn.Open()