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POGetting a list of types in an assembly that inherit from a specific interface
 

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  1. POGetting a list of types in an assembly that inherit from a specific interface
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    <p><strong>Please read before marking as duplicate, already answered, on hold, or off topic.</strong></p> <p>First of all, I know there are SIMILAR question here, with very good answers. Unfortunately they do not answer my question.</p> <p>My goal: to create a list of all of the types within an assembly that inherit from a specific interface. This assembly may be located at a local path or a UNC path.</p> <p>My problem: First, I know how to load an assembly, both from a UNC and a local path, and I know how to use GetTypes(). Many of you may know that GetTypes() has it's own issue. Specifically, it will raise an exception if any of the Types inherit from another type that cannot be loaded. <a href="https://stackoverflow.com/questions/7889228/how-to-prevent-reflectiontypeloadexception-when-calling-assembly-gettypes">How to prevent ReflectionTypeLoadException when calling Assembly.GetTypes()</a> for instance. The problem is, I don't need to load any of the dependencies. I only need to see if a type declared in the assembly inherits from an other specific type.</p> <p>some code as an example. This is just the first step, to retrieve the types in the assembly:</p> <pre><code>Assembly asm = Assembly.Load(File.ReadAllBytes(assemblyPath)); Type[] myTypes = GetLoadableTypes(asm); public static Type[] GetLoadableTypes(Assembly assembly) { // TODO: Argument validation try { return assembly.GetTypes(); } catch (ReflectionTypeLoadException e) { return e.Types.Where(t =&gt; t != null); } } </code></pre> <p>If any of the Types inside of the assembly inherit from a type that cannot be loaded, a ReflectionTypeLoadException exception will be thrown and they will show up as null inside of e.Types, so there is still no information on them. So I guess I can't use GetTypes still.</p> <p>For completeness, here is a reference to my original question. <a href="https://stackoverflow.com/questions/20251600/how-to-get-type-information-when-reflectiontypeloadexception-is-thrown-from-asse">How to get Type information when ReflectionTypeLoadException is thrown from Assembly.GetType()</a></p>
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    1. PTQuestion
    1. USCommunity
    1. USBranden Boucher
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    1. COTo me, that looks like an exact duplicate of the question you linked. It also looks like exactly the question you previously posted that was put on-hold. How is this question different?
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      1. POGetting a list of types in an assembly that inherit from a specific interface
      1. USDan Puzey
    2. COpossible duplicate of [How to get Type information when ReflectionTypeLoadException is thrown from Assembly.GetType()](http://stackoverflow.com/questions/20251600/how-to-get-type-information-when-reflectiontypeloadexception-is-thrown-from-asse)
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      1. POGetting a list of types in an assembly that inherit from a specific interface
      1. USDan Puzey
    3. COWhile I agree that it is very close in both cases, there was a VERY specific point that this question differs on: you still cannot get any information on a type if its dependencies cannot be loaded as well. I'm really not sure how to make that any clearer or where the question I linked deals with that aspect. If I missed something there, please point it out. As far as my question on hold, I thought I had to ask the question in a different way and give more information so I created this one. Then I realized I could have just edited the previous question.
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      1. POGetting a list of types in an assembly that inherit from a specific interface
      1. USBranden Boucher
 

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