using System; using System.Reflection; namespace Loader { // container for assembly and exposes a GetObject function // to create a late-bound object for casting by the consumer // this class is meant to be contained in a separate appDomain // controlled by ObjectLoader class to allow for proper encapsulation // which enables proper shadow-copying functionality. internal class AssemblyLoader : MarshalByRefObject, IDisposable { #region class-level declarations private Assembly a = null; #endregion #region constructors and destructors public AssemblyLoader( string fullPath ){ if( a == null ){ a = Assembly.LoadFrom( fullPath ); } } ~AssemblyLoader(){ dispose( false ); } public void Dispose(){ dispose( true ); } private void dispose( bool disposing ){ if( disposing ){ a = null; System.GC.Collect(); System.GC.WaitForPendingFinalizers(); System.GC.Collect( 0 ); } } #endregion #region public functionality public object GetObject( string typename, object[] ctorParms ){ BindingFlags flags = BindingFlags.CreateInstance | BindingFlags.Instance | BindingFlags.Public; object o = null; if( a != null ){ try{ o = a.CreateInstance( typename, true, flags, null, ctorParms, null, null ); } catch (Exception){ o = new ObjectLoadFailureException(); } } else { o = new AssemblyNotLoadedException(); } return o; } public object GetObject( string typename ){ return GetObject( typename, null ); } #endregion } }
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相关的一些资源：
Why isn't there an Assembly.Unload method?
AppDomains ("application domains")
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