Thanks. I'll try that. Before and After are the names of the third and fourth optional parameters.
I just copy pasted that description from the online help and didn't even look at it. A more valid on is: > Public Sub Add( _ > ByVal Item As Object, _ > Optional ByVal Key As String, _ > Optional ByVal Before As Object = Nothing _ > Optional ByVal After As Object = Nothing _ > ) Sorry for the confusion. Chris J. Breisch, MCSD, MCDBA -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Brad Wilson Sent: Friday, May 03, 2002 9:44 AM To: Mono Subject: Re: [Mono-list] Default Arguments Chris J. Breisch wrote: > I ask, because I'm trying to implement parts of Microsoft.VisualBasic.dll, > and I'm working on the Collection class. It's Add member is defined as > follows (VB.NET Syntax): I don't see a class named "Collection" anywhere in MSDN.net, so it's impossible for me to know why or where this is used, but my initial guess is that it's something that's only used from VB.net. > Public Sub Add( _ > ByVal Item As Object, _ > Optional ByVal Key As String, _ > Optional ByVal { Before | After } As Object = Nothing _ > ) I _think_ you should be able to do this in C#: void Add( object Item, [Optional] string Key, [Optional,DefaultValue(null)] object Value ) The OptionalAttribute class is part of System.Runtime.InteropServices; the DefaultValueAttribute class is part of System.ComponentModel (which makes me wonder whether that's right, because it would seem to be implying that it's used for COM clients, not native .NET clients). I have no idea what that "{ Before | After }" is, and why that parameter doesn't have a name (I surmised that it's a value for dictionary-style collection class and named it as such). The only reference I could find to "Before" was in enumeration XmlNodeOrder. Hope that helps, Brad -- Read my web log at http://www.quality.nu/dotnetguy/ _______________________________________________ Mono-list maillist - [EMAIL PROTECTED] http://lists.ximian.com/mailman/listinfo/mono-list _______________________________________________ Mono-list maillist - [EMAIL PROTECTED] http://lists.ximian.com/mailman/listinfo/mono-list
