[RESOLVED] Unsigned to signed conversion problem

[pourkascheff]

Seemed to work for me

In your example combination of b1 (100) and b2 (200) will never reach short's half (25800 not even close to 32767).

Try 255 and 255 and instead of 65535 we expect that achieve -1. (Or try other negative values based on your calculator)

I wasn't following the "write them down on separate lines" paragraph.
If you mean

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim HIGHBYTE As Byte = 255
        Dim LOWBYTE As Byte = 255
        TextBox1.Text = CShort((HIGHBYTE * 256) + LOWBYTE)
    End Sub

I've tried it. Same exception occurs.