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WPF Control Factory

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20 Apr 2010CPOL6 min read 37.6K   418   16  
This article explains some advantages and disadvantages of factories, and shows one to use for generating WPF Controls.
using System;
using System.Collections;
using System.Collections.Generic;
using Pfz.Collections;

namespace Pfz.Extensions.FastEnumeratorExtensions
{
	/// <summary>
	/// Adds the AsEnumerable method to a IFastEnumerator, so you can do a foreach
	/// over it.
	/// </summary>
	public static class PfzFastEnumeratorExtensions
	{
		/// <summary>
		/// Converts a fast enumerator to a custom IEnumerable (generic version).
		/// </summary>
		public static IEnumerable<T> AsEnumerable<T>(this IFastEnumerator<T> fastEnumerator)
		where
			T: class
		{
			if (fastEnumerator == null)
				throw new ArgumentNullException("fastEnumerator");
			
			while(true)
			{
				T result = fastEnumerator.GetNext();
				
				if (result == null)
					yield break;
				
				yield return result;
			}
		}
		
		/// <summary>
		/// Converts a fast enumerator to a custom IEnumerable (non-generic version).
		/// </summary>
		public static IEnumerable AsEnumerable(this IFastEnumerator fastEnumerator)
		{
			if (fastEnumerator == null)
				throw new ArgumentNullException("fastEnumerator");
			
			while(true)
			{
				object result = fastEnumerator.GetNext();
				
				if (result == null)
					yield break;
				
				yield return result;
			}
		}
	}
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer (Senior) Microsoft
United States United States
I started to program computers when I was 11 years old, as a hobbyist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.

At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do their work easier, faster and with less errors.

Want more info or simply want to contact me?
Take a look at: http://paulozemek.azurewebsites.net/
Or e-mail me at: paulozemek@outlook.com

Codeproject MVP 2012, 2015 & 2016
Microsoft MVP 2013-2014 (in October 2014 I started working at Microsoft, so I can't be a Microsoft MVP anymore).

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