[RESOLVED] [2008] Array.IndexOf always returns -1

I am having trouble with the following piece of code, the searchIndex always returns -1. If I put a breakpoint after 'searchIndex = Array.IndexOf(buffer, &H90)' and look in the buffer array I can see 90h so it should return the index but it doesn't.

This code is in my serialport DataReceived sub

Any help would be great!

Thanks

Code:

---

Dim searchIndex As Integer
        Dim buffer() As Byte = New Byte() {}
        Dim bytesRead As Integer
        bytesRead = SerialPort.BytesToRead ' Get how many bytes available.
        Array.Resize(buffer, bytesRead) ' Set the buffer to the number of bytes available.
        bytesRead = SerialPort.Read(buffer, 0, bytesRead) ' Read the bytes
        If bytesRead > 0 Then
            searchIndex = Array.IndexOf(buffer, &H90)
            If searchIndex <> -1 AndAlso buffer(searchIndex + 1) = &H90 Then
                If (searchIndex + 18) <= buffer.Length Then
                    For x As Integer = searchIndex To (searchIndex + 18)
                        Debug.WriteLine(buffer(x).ToString)
                    Next
                End If
            End If
        End If

---

Code:

---

        Dim buffer() As Byte = New Byte() {1, 2, 10, 11}
        Dim lk4 As Byte = &HA
        Dim iof As Integer = Array.IndexOf(buffer, lk4)

---

your code looks like something i have seen b4.

Yes I think you may have :D

searchIndex now returns correctly, thanks

remember to mark thread resolved, etc.