Byte array to Integer conversion

Ok, I can do this by multipling up each byte from left to right but...

I have an byte array and I want to extract a 4-byte Integer value from it, e.g.
Dim Data() = {0,0,1,9} = 265 as an Integer

What I want is simply to turn that array into a Dim I as Integer = the value of that array of data.

Surely there is a simply way to convert this... since the data is in the actual format used by an Integer anyway!
In pratice the Integer data will be within an array somewhere however - i.e. it wont just be a 4 byte array like the above example.

Can't for the life of me see how to do this though...

Anyone care to.... ;) :)

here is a byte array to char[]
it might get u somewhere

private char[] EncodeBytesToChars(byte[] data)
{
System.Text.Encoding encoding = System.Text.Encoding.Unicode;
return encoding.GetChars(data);
}

how is this?

VB Code:

Dim Data() As Byte = {0, 0, 1, 9} ' 256
        Dim intValue As Integer
        Data.Reverse(Data)
        intValue = BitConverter.ToInt32(Data, 0)
        MsgBox(intValue)