md5 hash of a whole file RESOLVED

[Usul]

Well, how can I get the md5 hashvalue of a whole file?

I only found how to encrypt strings in the web, but nothing about whole files.

I tried it myself, but the result is not the same as when I use a freeware programm (and I assume the error is in MY code):

    Private Sub testHash(ByVal filepath As System.String)
        Dim hashvalue As String
        Dim inputStream As FileStream
        inputStream = File.OpenRead(filepath)
        Dim tmpSource(1024) As Byte
        Dim tmpHash() As Byte
        inputStream.Read(tmpSource, 0, tmpSource.Length)

        tmpHash = New MD5CryptoServiceProvider().ComputeHash(tmpSource)
        Dim i As Integer
        Dim sOutput As New StringBuilder(tmpHash.Length)
        For i = 0 To tmpHash.Length - 1
            sOutput.Append(tmpHash(i).ToString("X2"))
        Next
        hashvalue = sOutput.ToString()
        inputStream.Close()

        MessageBox.Show(hashvalue)
    End Sub

any help appreciated,

thanx

Usul