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  1. PO
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    <p>Unfortunately System.Reflection doesn't provide a good way to correlate a method on a constructed type with the corresponding method on the generic type definition from which it was constructed. There are two solutions I know of, neither one is perfect:</p> <p><strong>Solution #1: static TypeBuilder.GetMethod.</strong> There's <a href="http://msdn.microsoft.com/en-us/library/ms145835.aspx" rel="nofollow noreferrer">a static version of GetMethod on TypeBuilder</a> that accepts a generic constructed type and a MethodInfo for a method on a generic type definition, and returns the corresponding method on the specified generic type. In this example, calling <code>TypeBuilder.GetMethod(Foo&lt;int&gt;, Foo&lt;T&gt;.Bar(T))</code> will give you <code>Foo&lt;int&gt;.Bar(T-as-int)</code> which you can then use to disambiguate between it and <code>Foo&lt;int&gt;.Bar(int)</code>. </p> <p>(The above example will not compile, naturally; I've used <code>Foo&lt;int&gt;</code> and <code>Foo&lt;T&gt;.Bar(T)</code> to mean the respective Type and MethodInfo objects which, which are easily obtainable but would make the example too complex). </p> <p>The bad news is that this only works when the generic type definition is a TypeBuilder, i.e. when you're emitting a generic type. </p> <p><strong>Solution #2: MetadataToken.</strong> It's a little known fact that type members retain their MetadataToken in the transition from generic type definitions to generic constructed types. So in your example, <code>Foo&lt;T&gt;.Bar(T)</code> and <code>Foo&lt;int&gt;.Bar(T-as-int)</code> should share the same MetadataToken. That would allow you to do this:</p> <pre><code>var barWithGenericParameterInfo = typeof(Foo&lt;&gt;).GetMethods() .Where(mi =&gt; mi.Name == "Bar" &amp;&amp; mi.GetParameters()[0].ParameterType.IsGenericParameter); var mappedBarInfo = foo.GetType().GetMethods() .Where(mi =&gt; mi.MetadataToken == genericBarInfo.MetadataToken); </code></pre> <p>(This will not compile either, unless I'm extremely lucky and managed to get it right the first time :) )</p> <p>The problem with this solution is that MetadataToken wasn't meant for that (probably; the documentation is a little skimpy on that) and it feels like a dirty hack. Nevertheless, it works.</p>
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    1. PODifferentiating between generic and non-generic version of overloaded method using reflection
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    1. COI think you're missing the point of the question here somewhat.
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      1. USPaul Suart
    2. COHow so? If I understand correctly, LBushkin wants to disambiguate between the two versions of Bar(int) after constructing `Foo<int>` from `Foo<T>`. I gave him two ways to tell them apart, by reliably identifying one of them. What do you think I've missed?
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    3. COAvish - this is _exactly_ what I'm trying to do. This is very helpful - I'm not thrilled with using an undocumented side effect (feature?) of generic type information in my implementation. But it's a place to start. Thanks.
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