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Subject:
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Optional prameters and C#?
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Posted By:
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NewTitle2007
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Post Date:
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8/5/2007 7:35:34 AM
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Hi,
In the first chapter there is a metho with the signture
Public Shared Function GetContactsByFirstLetterAsCollection(ByVal DiaryId As Integer, Optional ByVal FirstLetterOfSurname As Char = "*") As ContactCollection
There is no such a behavior in C# so I have written
public static ContactCollection GetContactsByFirstLetterAsCollection(int diaryId, char FirstLetterOfSurname)
{
if (FirstLetterOfSurname == 0)
FirstLetterOfSurname = '*';
I'm not sure that this is the best solution, any ideas?
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Reply By:
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Imar
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Reply Date:
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8/5/2007 11:07:31 AM
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Hi there,
IMO, it's cleaner to create an overload that calls the initial method passing in the default value. E.g.:
public static ContactCollection GetContactsByFirstLetterAsCollection(int diaryId)
{
return GetContactsByFirstLetterAsCollection(diaryId, '*');
}
This way, calling code can skip the firstLetterOfSurname param by simply calling something like:
GetContactsByFirstLetterAsCollection(5);
while you can still provide a firstLetterOfSurname by calling the other overload:
GetContactsByFirstLetterAsCollection(5, 's');
Hope this helps,
Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
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Reply By:
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NewTitle2007
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Reply Date:
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8/5/2007 12:17:52 PM
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Yes it's better :) thanks
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