Re: [Nant-users] proper format for a collection of strings in custom task

[Gert Driesen]

Castro,
The collection and iterator classes aren't really necessary as you could use 
an array based property too :

[BuildElementCollection("filters", "pattern")]
public Pattern[] Patterns {
   get { return _patterns; }
   set { _patterns = value; }
}
but from a design perspective collections are preferred over arrays.
Gert
----- Original Message ----- 
From: "Castro, Edwin Gabriel (Firing Systems Engr.)" <[EMAIL PROTECTED]>
To: "Castro, Edwin Gabriel (Firing Systems Engr.)" <[EMAIL PROTECTED]>; 
<[EMAIL PROTECTED]>
Sent: Tuesday, September 21, 2004 2:18 AM
Subject: RE: [Nant-users] proper format for a collection of strings in 
custom task

It turns out that I forgot to do a lot! I first needed to create a class
derived from Element:

[ElementName("pattern")]
public class Pattern : Element {
   // ...
}

Then I needed to create a specialized Collection:

[Serializable()]
public class PatternCollection : CollectionBase {
   // ...
}

Finally I needed to create an IEnumerator:

public class PatternEnumerator : IEnumerator {
   // ...
}

I can now use Pattern in my task as follows:

[BuildElementCollection("filters", "pattern")]
public PatternCollection Patterns {
   get { return _patterns; }
}

Wow, that was lot of work! I used Option, OptionCollection,
OptionEnumerator, and ExecTask as examples.

Lots of work just to get my task to have the correct elements in it but
it worked automatically once I did it the right way!

Thanks to the NAnt team for the examples!

--Edwin

________________________________
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Castro,
Edwin Gabriel (Firing Systems Engr.)
Sent: Monday, September 20, 2004 3:20 PM
To: [EMAIL PROTECTED]
Subject: [Nant-users] proper format for a collection of strings in
custom task

Hi All,

I am writing my own custom task and I would like to have a collection of
strings as an element... something like the following:

<customtask>
   <filters>
       <pattern name="pattern1" />
       <pattern name="pattern2" />
       <pattern name="pattern3" />
   </filters>
</customtask>

My code looks like this:

[BuildElementCollection("filters", "pattern")]
public StringCollection Patterns {
   get { return _patterns; }
}

This didn't work.

I would like to be able to use the Patterns property in a foreach loop
something like this:

public void ProcessPatterns() {
   foreach (string pattern in Patterns) {
       // do something with pattern
   }
}

Could someone help me to get the syntax correct? Thanks!

--Edwin


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