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CompareFiles - Comparing two binary/text files

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Click here to copy the following block
' Returns a boolean indicating whether two files are equal
' Example: Debug.WriteLine(CompareFiles("D:\File1.mdb", "D:\File2.mdb"))

Function CompareFiles(ByVal path1 As String, ByVal path2 As String) As Boolean
  Dim file1 As New System.IO.FileInfo(path1)
  Dim file2 As New System.IO.FileInfo(path2)
  Dim stream1, stream2 As System.IO.FileStream

  ' if the length of the 2 files is different, return False
  If file1.Length <> file2.Length Then Return False

  Try
    ' open the two files in read mode
    stream1 = file1.OpenRead()
    stream2 = file2.OpenRead()
    Dim i As Integer
    ' check whether all bytes are equal
    For i = 0 To stream1.Length
      If stream1.ReadByte() <> stream2.ReadByte Then
        Return False
      End If
    Next
    ' if not already exited at this point, the two files are equal
    Return True
  Catch e As Exception
    Return False
  Finally
    ' be sure to close the file before exiting the function
    If Not stream1 Is Nothing Then stream1.Close()
    If Not stream2 Is Nothing Then stream2.Close()
  End Try
End Function


Submitted By : Nayan Patel  (Member Since : 5/26/2004 12:23:06 PM)

Job Description : He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting.
View all (893) submissions by this author  (Birth Date : 7/14/1981 )


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