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Tip of the Day
Language: Visual Basic
Expertise: Beginner
May 12, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Join Two Files Together

The DOS Copy command allows you to take the contents of two different files and put them one after the other into a third file. You can do the same thing in VB with this subroutine:
Public Sub JoinFiles(Source1 As String, Source2 As String, _
	Dest As String)
	Dim Buffer() As Byte

	Open Source1 For Binary Access Read As #1
	Open Source2 For Binary Access Read As #2
	Open Dest For Binary Access Write As #3

	ReDim Buffer(1 To LOF(1))
	Get #1, , Buffer
	Put #3, , Buffer

	ReDim Buffer(1 To LOF(2))
	Get #2, , Buffer
	Put #3, , Buffer

	Close #1, #2, #3
End Sub
In a production app, use FreeFile rather than hard-code the file handles.
Russell Davis
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