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copied!<p><strong>EDIT: I've updated the answer with some more detailed information.</strong></p> <p>Here is an example how you might accomplish what you want to do.<br> Start by defining a enum for your different types of plugin types.</p> <pre><code>public enum AssemblyPluginType { Skins, Browser } </code></pre> <p>Add two attributes that will be used to describe the plugins (assembly plugin type and potential conflicts).</p> <pre><code>[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = false)] public sealed class AssemblyPluginAttribute : Attribute { private readonly AssemblyPluginType _type; public AssemblyPluginType PluginType { get { return _type; } } public AssemblyPluginAttribute(AssemblyPluginType type) { _type = type; } } [AttributeUsage(AttributeTargets.Assembly, AllowMultiple = false)] public sealed class AssemblyPluginConflictAttribute : Attribute { private readonly AssemblyPluginType[] _conflicts; public AssemblyPluginType[] Conflicts { get { return _conflicts; } } public AssemblyPluginConflictAttribute(params AssemblyPluginType[] conflicts) { _conflicts = conflicts; } } </code></pre> <p>Now you can add these attributes to your assembly.</p> <p>The following two lines can be added anywhere in the assembly as long as they're outside a namespace. I usually put assembly attributes in the <code>AssemblyInfo.cs</code> file that can be found in the <code>Properties</code> folder.</p> <pre><code>[assembly: AssemblyPluginAttribute(AssemblyPluginType.Browser)] [assembly: AssemblyPluginConflictAttribute(AssemblyPluginType.Skins, AssemblyPluginType.Browser)] </code></pre> <p>Now you can use the following code to examine an assembly for specific attributes:</p> <pre><code>using System; using System.Reflection; namespace ConsoleApplication { public class Program { public static void Main(string[] args) { // Get the assembly we're going to check for attributes. // You will want to load the assemblies you want to check at runtime. Assembly assembly = typeof(Program).Assembly; // Get all assembly plugin attributes that the assembly contains. object[] attributes = assembly.GetCustomAttributes(typeof(AssemblyPluginAttribute), false); if (attributes.Length == 1) { // Cast the attribute and get the assembly plugin type from it. var attribute = attributes[0] as AssemblyPluginAttribute; AssemblyPluginType pluginType = attribute.PluginType; } } } } </code></pre>

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