In a CRC32() class, I need to read a file by the use of FileStream() in such an approach:

        ' This is the main method to call
        Public Function GetCRC() As Boolean
            Dim loStream As Stream
            loStream = New FileStream(cFileName, FileMode.Open, FileAccess.Read, FileShare.Read, 8192)
            nCRC32 = GetCrc32(loStream)
            loStream.Close()
            Return True
        End Function

However, occasionnaly, the FileStream() method cannot access the file. It returns this message:

"The process cannot access the file ... because it is being used by another process."

Is there any way to avoid that? Or, is there a way to read the file even if it is being used by another process? Because, even if I implement a retry mechanism, I am not sure in such a context if that would work.