VB.net - insert/retrieve picture from mysql Database directly to/from a Picturebox

Question

I\'m am having a heck of a time finding a code snippet that works for this. I have got to the point where it appears the picture is stored as a blob (perhaps incorrectly) by

Answer 1

What happens if you switch this:

Dim ad As New System.IO.MemoryStream(100000)

to:

Dim ad As New System.IO.MemoryStream()

EDIT

VB array sizes are different than other programming languages, I think you need to do a minus 1:

rawData = New Byte(FileSize - 1) {}

EDIT 2

Alright, lets look over what you have for raw binary data. All JPGs should start with FFD8 and end with FFD9. Insert the following after you set the rawData array. If it throws an error then your JPEG information is corrupt.

    If (rawData(0) = &HFF) AndAlso (rawData(1) = &HD8) Then
        Trace.WriteLine("File start OK")
    Else
        Throw New ApplicationException("Invalid jpg header")
    End If

    If (rawData(rawData.Length - 2) = &HFF) AndAlso (rawData(rawData.Length - 1) = &HD9) Then
        Trace.WriteLine("File end OK")
    Else
        Throw New ApplicationException("Invalid jpg footer")
    End If

EDIT 3

We're going to need to see what the first few bytes of the data look like. Run this and post what gets outputed:

    For I = 0 To 20
        Trace.Write(Convert.ToString(rawData(I), 16).ToUpperInvariant())
    Next