|
using System;
namespace ConfigurableConvertTest.GenericConverters
{
/// <summary>
/// Holds the SearchingConverterHandler that you can add to your Converters class
/// to make it capable of converting compatible delegate types (for example, Action
/// to ThreadStart).
/// </summary>
public static class DelegateConverter
{
private static readonly SearchingConverterEventHandler _searchingConverterHandler = _Searching;
/// <summary>
/// Gets the handler that will add delegate conversions to your application.
/// </summary>
public static SearchingConverterEventHandler SearchingConverterHandler
{
get
{
return _searchingConverterHandler;
}
}
/// <summary>
/// Does a conversion from a delegate of any type to the
/// TResultDelegate type.
/// </summary>
public static TResultDelegate Convert<TResultDelegate>(Delegate input)
where
TResultDelegate: class // unfortunatelly, we can't use Delegate as a constraint.
{
if (input == null)
return null;
var target = input.Target;
var method = input.Method;
object result = Delegate.CreateDelegate(typeof(TResultDelegate), target, method);
return (TResultDelegate)result;
}
private static void _Searching(SearchingConverterEventArgs args)
{
var inputType = args.InputType;
if (!typeof(Delegate).IsAssignableFrom(inputType))
return;
var outputType = args.OutputType;
if (!typeof(Delegate).IsAssignableFrom(outputType))
return;
var type = typeof(DelegateConverter<,>).MakeGenericType(inputType, outputType);
var property = type.GetProperty("Instance");
var converter = property.GetValue(null, null);
args.Converter = (Delegate)converter;
}
}
/// <summary>
/// This class holds a converter capable of converting
/// delegates of type TInput to delegates of type TOutput.
/// Both delegates must be already equivalent, like happens with
/// ThreadStart and Action.
/// </summary>
public static class DelegateConverter<TInput, TOutput>
where
TInput: class
where
TOutput: class
{
static DelegateConverter()
{
if (!typeof(Delegate).IsAssignableFrom(typeof(TInput)))
throw new ArgumentException("TInput should be a delegate.");
if (!typeof(Delegate).IsAssignableFrom(typeof(TOutput)))
throw new ArgumentException("TOutput should be a delegate.");
}
private static readonly Converter<TInput, TOutput> _instance = Convert;
/// <summary>
/// Gets a Converter capable of converting delegates of TInput
/// to delegates of type TOutput.
/// </summary>
public static Converter<TInput, TOutput> Instance
{
get
{
return _instance;
}
}
/// <summary>
/// Does a conversion from a delegate of type TInput to a delegate
/// of type TOutput.
/// </summary>
private static TOutput Convert(TInput input)
{
Delegate inputDelegate = (Delegate)(object)input;
return DelegateConverter.Convert<TOutput>(inputDelegate);
}
}
}
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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).