Rafael Borges Machado rafaelbm

adjames / GenericConstructorHelper.cs

Created February 4, 2012 07:29

Workaround for inability to create C# generic constraints for the presence of a constructor that takes parameters... i.e. Foo<T>(string name) where T: new(string)

	public Func<T1, TResult> CompileConstructor<T1, TResult>()
	{
	var type1 = typeof(T1);
	var parameter1 = Expression.Parameter(type1);
	var constructor = typeof(TResult).GetConstructor(new Type[] { type1 });
	var body = Expression.New(constructor, parameter1);
	var lambda = Expression.Lambda<Func<T1, TResult>>(body, parameter1);
	var method = lambda.Compile();
	return method;
	}

NewerOlder