Read/Write binary files overflow - vb.net

Question

I am wanting some help with some code please. Here is my code:
Public Function ReadBinaryFileLarge(strFilename As String) As Byte()
Dim position As Integer = 0
Dim bufferSize As Integer = 4096
Dim bytes() As Byte
Using fsOpen As FileStream = New FileStream(strFilename, FileMode.Open)
ReDim bytes((fsOpen.Length) - 1)
Do
If (position + bufferSize) > fsOpen.Length Then
fsOpen.Read(bytes, position, fsOpen.Length - position)
Exit Do
Else
fsOpen.Read(bytes, position, bufferSize)
End If
position += bufferSize
Application.DoEvents()
Loop
End Using
Return bytes
End Function
Public Sub SaveBinaryFileLarge(strFilename As String, bytesToWrite() As Byte)
Dim position As Integer = 0
Using fsNew As FileStream = New FileStream(strFilename, FileMode.Create, FileAccess.Write)
Do
Dim intToCopy As Integer = Math.Min(4096, bytesToWrite.Length - position)
Dim buffer(intToCopy - 1) As Byte
Array.Copy(bytesToWrite, position, buffer, 0, intToCopy)
fsNew.Write(buffer, 0, buffer.Length)
position += intToCopy
Application.DoEvents()
Loop While position < bytesToWrite.Length
End Using
End Sub
My problem is that with large files, the byte array cannot be declared that large. I am needing to load it into a byte array to do some encryption work on the byte array. I am playing around with this code:
Public Function ReadBinaryFileTest(strFilename As String) As Byte()()
Const SIZE As Integer = &H1000 '4096 <-experiment with this value
Dim bytes()() As Byte
Using fsOpen As FileStream = New FileStream(strFilename, FileMode.Open, FileAccess.Read, FileShare.Read, SIZE)
Dim ubound = (fsOpen.Length / SIZE) - 1
bytes = new byte(ubound)()
Dim read As Integer = 0
For index As Integer = 0 To ubound
bytes(index) = New Byte(SIZE - 1)
read = fsOpen.Read(bytes(index), 0, SIZE)
If read <> SIZE Then
Array.Resize(bytes(index), read) 'this should only happen once if at all
End If
Next
End Using
Return bytes
End Function
However I am getting these errors:
bytes = new byte(ubound)()
'{' expected
and
bytes(index) = New Byte(SIZE - 1)
Type 'Byte' has no constructors.
Is this the correct way to go about this problem? If not, how should I attack it?

Answer 1

You have to use ReDim,
ReDim bytes(ubound-1)
Or
bytes = New Byte(ubound)() {}