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O ya I solved this, noted though far down the optional parameter thread 
The easier, better way was just to overload the function as the 2 optional parameters had fixed values when used in that context. 
And...the function works beautifully 
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info. 
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I am using regex (regular expressions) in my C# application. I am pulling out the first name like this...
Regex regName = new Regex( @"(?<Last>\S+), (?<First>\S+)" );
Match pMatch = regName.Match( "Doe, John" );
Text strFirst = pMatch.Groups[ "First" ].Value;
Question: If the user changes the name to 'Jane', how can I use regular expressions to replace the first name?
If strFirst = "Jane", then I want a new string to be "Doe, Jane".
Thanks!!
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You'll want to use Regex.Replace, and then create a replacement string. Something like:
Regex regName = new Regex( @"(?<last>S+), (?<first>S+)");
regName.Replace (string, @"\k<last>, Jane");
The \k refers to whatever matched the "Last" capture.
If you're playing with regex, you might like this utility:
http://www.gotdotnet.com/userarea/keywordsrch.aspx?keyword=regular%20expression%20workbench
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Eric, there's a link tool down at the bottom. Very handy. Just highlight and click link[^]
http://www.gotdotnet.com/userarea/keywordsrch.aspx?keyword=regular%20expression%20workbench [^]
David Stone
But Clinton wasn't a predictable, boring, aging, lying, eloquent, maintainer-of-the-status-quo. He was a predictable, boring-but-trying-to-look-hip, aging-and-fat-but-seemingly-oblivious-to-it, lying-but-in-sadly-blatant-ways, not-eloquent-but-trying-to-make-up-for-it-by-talking-even-more, bringer-in-of-scary-and-potentially-dangerous-new-policies. And there was also Al Gore. It just wasn't *right*.
Shog9
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Is it safe to assume that anytime you do some sort of COM Interop with a dll that wasn't written using the .NET Framework that the method call needs to be prefixed with the unsafe marker, or is this only needed when the method deals with pointers that are outside the bounds of .NET to handle directly?
[System.Runtime.InteropServices.DllImport("kernel32.dll")]
unsafe int SomeFunction(....);
Nick Parker
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U only have to specify unsafe if the compiler complains 
No, but really unsafe only needs to be declared if you are using pointer notation in C# ( *, &, ->). It is recommneded though (as far as I am aware) to use the Marshalling class as far as possible, else they wouldnt have called it "unsafe".
Cheers
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info.
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leppie wrote:
U only have to specify unsafe if the compiler complains
Somehow I believe more people than you think use this method.
Nick Parker
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Is it possible to make a method to have options parameters, without defining the function for each valid configuration?
 Email: theeclypse@hotmail.com URL: http://www.onyeyiri.co.uk
"All programmers are playwrights and all computers are lousy actors."
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Not sure, however you could always overload the function.
Nick Parker
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If you follow the C++ model, the default value is burned into your client-side code, and you can't update it without forcing the user to recompile.
We've talked a bit about whether you could have the compiler automatically generate the overloads that you would write yourself. Would that work for you?
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That would be awesome! Get's my vote...tell Anders that.
David Stone
But Clinton wasn't a predictable, boring, aging, lying, eloquent, maintainer-of-the-status-quo. He was a predictable, boring-but-trying-to-look-hip, aging-and-fat-but-seemingly-oblivious-to-it, lying-but-in-sadly-blatant-ways, not-eloquent-but-trying-to-make-up-for-it-by-talking-even-more, bringer-in-of-scary-and-potentially-dangerous-new-policies. And there was also Al Gore. It just wasn't *right*.
Shog9
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Eric Gunnerson (msft) wrote:
We've talked a bit about whether you could have the compiler automatically generate the overloads that you would write yourself. Would that work for you?
 Yes!
You should definitely keep talking about that. This and the lack of (obvious) documentation around Attributes are my two biggest whines about C#/.NET.
There's little more irritating than having a function with 6 optional arguments and having to write 6 one-line overloads which in reality take up 30 lines and give you 6 more paths for testing.
Paul
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Eric Gunnerson (msft) wrote:
We've talked a bit about whether you could have the compiler automatically generate the overloads that you would write yourself. Would that work for you?
Definately.
Nick Parker
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You could always rewrite a function like this:
void Function(string name, int size, Color color, params object[] optionalparams){}
Then u have "infinite" overloads, yet alot of work to do.
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info.
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leppie wrote:
void Function(string name, int size, Color color, params object[] optionalparams){}
Ha! Yeah. 2 minutes to write the function (assuming you dont feel a need to validate the parameters) and then when you want to use it six months down the line you have to go back and figure out what constitutes a valid argument list.
I'd have to be pretty desperate before I resorted to that
What I'm doing now is squeezing the overloads into a region and hiding them away (it's actually the pile of useless code to hunt through that bothers me more than writing it).
Paul
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pdriley wrote:
I'd have to be pretty desperate before I resorted to that
Me too
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info.
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pdriley wrote:
and the lack of (obvious) documentation around Attributes are my two biggest whines about C#/.NET.
Have you read Eric Gunnerson's article [^] on attributes?
Nick Parker
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I understand Attributes, what they are, how to use them, how to customise them, etc. (partly due to having read that very article )
What is lacking is documentation about the Attributes that already exist and what they're doing there.
Nearly every question I've posted on this board has been solved by the use of an Attribute I didn't know existed. Even if it was (for example) just links from the "Events and Delegates" areas of MSDN to the DefaultEventAttribute -- that would be useful.
I'm sure, over time, people will write useful articles on sites like this one, which will reduce the usefulness of this. I, for example, intend to write an article which should introduce many of the Attributes in the ComponentModel (just need a couple of weeks before I have time).
But at the moment, when looking round for this stuff, I find more questions than answers on the internet and not much of either in MSDN. It's causing me (and seemingly other people) to curse a lot. 
Paul
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I guess they decided to give us overloading instead.  Maybe something todo with a strongly typed language like C# and ECMA conformance.
BTW the parameter is supported on VB.Net and Managed C++(I think).
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info.
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VB.NET: Yes.
C++.NET: Not sure.
leppie wrote:
VB.Net
But I did want to point out that it's .NET not .Net. You'll get slaughtered if you say .Net in the Lounge instead of .NET.
David Stone
But Clinton wasn't a predictable, boring, aging, lying, eloquent, maintainer-of-the-status-quo. He was a predictable, boring-but-trying-to-look-hip, aging-and-fat-but-seemingly-oblivious-to-it, lying-but-in-sadly-blatant-ways, not-eloquent-but-trying-to-make-up-for-it-by-talking-even-more, bringer-in-of-scary-and-potentially-dangerous-new-policies. And there was also Al Gore. It just wasn't *right*.
Shog9
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U can allways try doin something like this,
public static void MyFunc(params object[] param)
{
foreach (object obj in param)
{
Console.WriteLine(obj);
}
}
but you would have to handle all the objects, making it rather pointless, except in some cases, like my delegate problem above. I hope this will work for it though
MYrc : A .NET IRC client with C# Plugin Capabilities. See
http://sourceforge.net/projects/myrc for more info.
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