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POGeneric factory that creates generic classes
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  1. POGeneric factory that creates generic classes
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    copied!<p>I have a set of value type converters that convert strings into their respective types. I have a factory that is responsible for creating these converters based on the type, when needed. I'm trying to keep the factory and converters generic, but I'm running into some issues. I don't know the type until I call the .Create method on the factory, so I need to be able to pass in the type as an argument. The trouble is that, then, my .Create method thinks I'm looking for a <code>ValueConverter&lt;Type&gt;</code> instead of a more appropriate value converter like <code>ValueConverter&lt;int&gt;</code>. I'm missing something, or perhaps even doing it completely wrong. </p> <p>Here are a couple of my converters and the interface:</p> <pre><code>public interface IValueConverter&lt;T&gt; { T Convert(object objectToConvert); } public class IntValueConverter : IValueConverter&lt;int&gt; { public int Convert(object objectToConvert) { return System.Convert.ToInt32(objectToConvert); } } public class DateTimeValueConverter : IValueConverter&lt;DateTime&gt; { public DateTime Convert(object objectToConvert) { return System.Convert.ToDateTime(objectToConvert); } } </code></pre> <p>Then, I have a factory like this:</p> <pre><code>public class ValueConverterFactory : IValueConverterFactory { private readonly IUnityContainer _container; public ValueConverterFactory(IUnityContainer container) { _container = container; } public IValueConverter&lt;T&gt; Create&lt;T&gt;(T type) { return _container.Resolve&lt;IValueConverter&lt;T&gt;&gt;(); } } </code></pre> <p>And unity is configured something like this:</p> <pre><code>Container.RegisterType&lt;IValueConverter&lt;int&gt;, IntValueConverter&gt;(); Container.RegisterType&lt;IValueConverter&lt;DateTime&gt;, DateTimeValueConverter&gt;(); </code></pre> <p>I need to be able to call the factory like this:</p> <pre><code>var objectType = someObj.GetType(); var valueConverter = _valueConverterFactory.Create(objectType); </code></pre>
 

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