Plugin

new_gist_file

namespace DBB.Plugins.Interfaces
{
    public interface IPlugin
    {
        /// <summary>
        /// Gets or sets the plugin's name.
        /// </summary>
        string Name { get; }

        /// <summary>
        /// Gets or sets the plugin's version.
        /// </summary>
        string Version { get; }

        /// <summary>
        /// Runs the plugin's main method.
        /// </summary>
        /// <returns>Some object.</returns>
        object Run();
    }
}

/// <summary>
/// Gets a list of Dll files within a specified path.
/// </summary>
/// <param name="path">Path to retrieve Dll files in.</param>
/// <returns>List of strings with file names.</returns>
public static List<string> GetDllList(string path)
{
    return new List<String>(Directory.GetFiles(path, "*.dll"));
}

/// <summary>
/// Gets a list of IPlugin objects.
/// </summary>
/// <param name="dllFiles">List of Dll files to check for plugin capabilities.</param>
/// <returns>List of IPlugin objects.</returns>
public static List<IPlugin> GetPlugins(List<string> dllFiles)
{
    List<IPlugin> retVal = new List<IPlugin>();

    foreach (string dll in dllFiles)
    {
        try
        {
            // Load dll.
            Assembly assembly = Assembly.LoadFile(dll);
            // Get class names.
            Type[] types = assembly.GetTypes();

            // Add plugin classes to plugin list.
            foreach (Type cls in types)
            {
                if (cls.IsPublic)
                {
                    // Get classe's implemented interfaces.
                    Type[] interfaces = cls.GetInterfaces();
                    foreach (Type iface in interfaces)
                    {
                        // Is current interface IPlugin?
                        if (cls.GetInterface(iface.FullName) == typeof(IPlugin))
                            retVal.Add(assembly.CreateInstance(cls.FullName) as IPlugin);
                    }
                }
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    return retVal;
}