从vb.net中的字节数组中获取某些字节

Question

我有一个包含文件中字节的字节数组（ 请参阅我的上一个问题 ）现在我想从数组中获取第二批4个字节并将它们转换为类似bytearray.get(4[start],4[length])的整数bytearray.get(4[start],4[length])

Answer 1

Dim result as Int32

result = BitConverter.ToInt32(bytearray, 4)

Answer 2

Public Function ByteArrayToInteger(ByRef ByteArray() As Byte, ByRef StartIndex As Integer, ByRef EndIndex As Integer) As Integer
    Dim bSubArray(0 To EndIndex - StartIndex) As Byte
    For i As Integer = StartIndex To EndIndex
        bSubArray(i - StartIndex) = ByteArray(i)
    Next
    Return BitConverter.ToInt32(bSubArray, 0)
End Function

'calling it :

Dim b() As Byte = {1, 2, 3, 4, 5, 6}
Dim x As Integer = ByteArrayToInteger(b, 0, 3)