Declare statements pointing to Visual Basic runtime
Expert VB6 developers can invoke methods defined in VB6 runtime, for example to retrieve information about variables and arrays. Code that uses methods defined in the VB6 runtime can’t be migrated to VB.NET, both because the MSVBVM60.DLL library isn’t available and because.NET variables and arrays are stored differently from VB6 and therefore the methods wouldn’t work anyway because.
VB Migration Partner flags Declare statements that point to VB6 runtime with an appropriate warning.