Full Name:
Understanding Optional Parameters in COM Interop

Short Name:
Understanding Optional Parameters in COM Interop

Type of Entity:
C#

Abstract:
Many of the methods in Microsoft Office Word 2003 and Microsoft Office Excel 2003 accept optional parameters. Optional parameters are only optional when you call a Word or Excel method using Microsoft Visual Basic. When you use C# to program against Word or Excel, you must pass a value for all optional parameters.

MSDN Source URL:
http://msdn2.microsoft.com/ms178843.aspx