It is possible to load a message definition file from memory in Visual Basic. However, you need to be careful the you are not corrupting the file using Visual Basic's built-in unicode processing.

The following code fragment shows how you can use this API using InputB which is routine for reading a binary file in Visual Basic:

fileLength = FileLen(currFileName)

fileNum = FreeFile
Open currFileName For Binary Access Read As #fileNum

On Error GoTo loadFailedCloseFile

fileData = InputB(fileLength, fileNum)

On Error GoTo loadFailed

' tell the engine to load the file's bytes as a string
Engine.InternalEngine.LoadFromMemory fileData