Reading the first four bytes of a (binary) files?

[AzraelUK]

Hi there, I was wondering if there was an easy way to read the first four bytes of a file. The ones in particular I'm looking for are 49 42 53 50 ("IBSP") and 46 42 53 50 ("FBSP"), but that bit should be easy.

When you say bytes do you really mean the first four bytes or do you mean the first four numbes? I have a suspicion you mean the latter.

[AzraelUK]

Uhh... the first four hexadecimal numbers if you open the file in a hex editor. As I evidently didn't imply, when you open it in Notepad, the first four characters are either IBSP or FBSP.

[waynespangler]

Try this:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text = String.Empty
        Using fs As New FileStream("c:\test.txt", FileMode.Open)
            fs.Position = 0
            Using br As New BinaryReader(fs)
                For x As Int16 = 0 To 3
                    TextBox1.Text &= Asc(br.ReadChar) & " "
                Next
            End Using
        End Using
    End Sub

[AzraelUK]

Hmm... Type 'FileStream' is not defined :/

[waynespangler]

import System.IO

[yasserjasem]

hi i'm yasser from iraq i'm in the last year in computer science and i have project abaut the encryption on the mpeg file by using vb6 and i realy do not known any think about reading firt 4 byte from mpeg file i need your help and i must read this file by using open function