C# Cookbook

12.5. Finding Members Within an Interface

Problem

You need to find one or more members, with a specific name or a part of a name that belongs to an interface.

Solution

Use the same technique outlined in Recipe 12.4, but filter out all types except interfaces. The first overloaded version of the FindIFaceMemberInAssembly method finds a member specified by the memberName parameter in all interfaces contained in an assembly. Its source code is:

public static void FindIFaceMemberInAssembly(string asmPath, string memberName)
{
    // delegate to the interface based one passing blank
    FindIFaceMemberInAssembly(asmPath, memberName, "*");
}

The second overloaded version of the FindIFaceMemberInAssembly method finds a member in the interface specified by the interfaceName parameter. Its source code is:

public static void FindIFaceMemberInAssembly(string asmPath, string memberName, string interfaceName) { Assembly asm = Assembly.LoadFrom(asmPath); foreach(Type asmType in asm.GetTypes( )) { if (asmType.IsInterface && (asmType.FullName.Equals(interfaceName) || interfaceName.Equals("*"))) { if (asmType.GetMember(memberName, MemberTypes.All, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.IgnoreCase).Length > 0) { foreach(MemberInfo iface in asmType.GetMember(memberName, MemberTypes.All, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.IgnoreCase)) { Console.WriteLine("Found member {0}.{1}", ...