When I add a reference to a COM dll using add reference in by c# console app,
the VB6 COM long variables of a function appears in the intellisense and
debug errors as an int.
From MSDN the sizes of the variables are:

com INT Holds signed 32-bit (4-byte) integers ranging in value from
-2,147,483,648 through 2,147,483,647.
.net int  -2,147,483,648 to 2,147,483,647

COM long Holds signed 64-bit (8-byte) integers ranging in value from
-9,223,372,036,854,775,808 through 9,223,372,036,854,775,807 (9.2...E+18).
.net long -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

does anyone have a solution to this apart from manually writing interop?
Are there settings I can use to correct this?
Thanks