Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / xsp / System / Web / Util / ArglessEventHandlerProxy.cs / 1 / ArglessEventHandlerProxy.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Util { using System; using System.Reflection; using System.Reflection.Emit; using System.Security.Permissions; /* * Proxy that provides EventHandler and redirects it to arg-less method on the given object */ internal class ArglessEventHandlerProxy { private Object _target; private MethodInfo _arglessMethod; internal ArglessEventHandlerProxy(Object target, MethodInfo arglessMethod) { Debug.Assert(arglessMethod.GetParameters().Length == 0); _target = target; _arglessMethod = arglessMethod; } internal void Callback(Object sender, EventArgs e) { _arglessMethod.Invoke(_target, new Object[0]); } internal EventHandler Handler { get { return new EventHandler(Callback); } } } internal delegate void VoidMethod(); #if UNUSED_CODE internal class ArglessEventHandlerDelegateProxy { private VoidMethod _vm; internal ArglessEventHandlerDelegateProxy(VoidMethod vm) { _vm = vm; } internal void Callback(Object sender, EventArgs e) { _vm(); } internal EventHandler Handler { get { return new EventHandler(Callback); } } } #endif //UNUSED_CODE internal class CalliEventHandlerDelegateProxy { private IntPtr _functionPointer; private Object _target; private bool _argless; internal CalliEventHandlerDelegateProxy(Object target, IntPtr functionPointer, bool argless) { _argless = argless; _target = target; _functionPointer = functionPointer; } internal void Callback(Object sender, EventArgs e) { if (_argless) { System.Web.Util.CalliHelper.ArglessFunctionCaller(_functionPointer, _target); } else { System.Web.Util.CalliHelper.EventArgFunctionCaller(_functionPointer, _target, sender, e); } } internal EventHandler Handler { get { return new EventHandler(Callback); } } } #if LCG_Implementation internal delegate void ArglessMethod(IntPtr methodPtr, Object target); internal delegate void EventArgMethod(IntPtr methodPtr, Object target, Object source, EventArgs e); internal class CalliHelper { internal static ArglessMethod ArglessFunctionCaller; internal static EventArgMethod EventArgFunctionCaller; // Make sure we have reflection permission to use ReflectionEmit and access method [ReflectionPermission(SecurityAction.Assert, Flags = ReflectionPermissionFlag.ReflectionEmit | ReflectionPermissionFlag.MemberAccess)] static CalliHelper() { // generate void(void) calli DynamicMethod dm = new DynamicMethod("void_calli", typeof(void), new Type[] { typeof(IntPtr) /* function ptr */, typeof(Object) /* target */}, typeof(CalliHelper).Module); ILGenerator ilg = dm.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[0], null); ilg.Emit(OpCodes.Ret); ArglessFunctionCaller = (ArglessMethod)dm.CreateDelegate(typeof(ArglessMethod)); // generate void(Object, EventArgs) calli dm = new DynamicMethod("eventarg_calli", typeof(void), new Type[] { typeof(IntPtr) /* function ptr */, typeof(Object) /* target */, typeof(Object) /* sender */, typeof(EventArgs) }, typeof(CalliHelper).Module); ilg = dm.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_2); ilg.Emit(OpCodes.Ldarg_3); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[] { typeof(object) /* sender */, typeof(EventArgs) }, null); ilg.Emit(OpCodes.Ret); EventArgFunctionCaller = (EventArgMethod)dm.CreateDelegate(typeof(EventArgMethod)); } } #endif //LCG_Implementation #if Reflection_Emit_Implementation internal delegate void ArglessMethod(IntPtr methodPtr, Object target); internal delegate void EventArgMethod(IntPtr methodPtr, Object target, Object source, EventArgs e); internal class CalliHelper { internal static ArglessMethod ArglessFunctionCaller; internal static EventArgMethod EventArgFunctionCaller; // Make sure we have reflection permission to use ReflectionEmit and access method [ReflectionPermission(SecurityAction.Assert, Flags = ReflectionPermissionFlag.ReflectionEmit | ReflectionPermissionFlag.MemberAccess)] static CalliHelper() { AssemblyName an = new AssemblyName("CalliHelper"); AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly(an, AssemblyBuilderAccess.Run); ModuleBuilder mb = ab.DefineDynamicModule("CalliHelper.dll"); ConstructorInfo ci = typeof(CLSCompliantAttribute).GetConstructor(new Type[] { typeof(bool) }); CustomAttributeBuilder cb = new CustomAttributeBuilder(ci, new object[] { true }); mb.SetCustomAttribute(cb); TypeBuilder tb = mb.DefineType("System.Web.Util.CalliHelper", TypeAttributes.NotPublic | TypeAttributes.Sealed); MethodBuilder methb = tb.DefineMethod("EventArgMethod", MethodAttributes.Assembly | MethodAttributes.Static, typeof(void), new Type[] { typeof(IntPtr), typeof(object), typeof(object), typeof(EventArgs) }); ILGenerator ilg = methb.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_2); ilg.Emit(OpCodes.Ldarg_3); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[] { typeof(object), typeof(EventArgs) }, null); ilg.Emit(OpCodes.Ret); methb = tb.DefineMethod("ArglessMethod", MethodAttributes.Assembly | MethodAttributes.Static, typeof(void), new Type[] { typeof (IntPtr), typeof(object) }); ilg = methb.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[0], null); ilg.Emit(OpCodes.Ret); Type t = tb.CreateType(); ArglessFunctionCaller = (ArglessMethod)Delegate.CreateDelegate(typeof(ArglessMethod), t, "ArglessMethod", true); EventArgFunctionCaller = (EventArgMethod)Delegate.CreateDelegate(typeof(EventArgMethod), t, "EventArgMethod", true); //ab.Save("CalliHelper.dll"); } } #endif // Reflection_Emit_Implementation } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Util { using System; using System.Reflection; using System.Reflection.Emit; using System.Security.Permissions; /* * Proxy that provides EventHandler and redirects it to arg-less method on the given object */ internal class ArglessEventHandlerProxy { private Object _target; private MethodInfo _arglessMethod; internal ArglessEventHandlerProxy(Object target, MethodInfo arglessMethod) { Debug.Assert(arglessMethod.GetParameters().Length == 0); _target = target; _arglessMethod = arglessMethod; } internal void Callback(Object sender, EventArgs e) { _arglessMethod.Invoke(_target, new Object[0]); } internal EventHandler Handler { get { return new EventHandler(Callback); } } } internal delegate void VoidMethod(); #if UNUSED_CODE internal class ArglessEventHandlerDelegateProxy { private VoidMethod _vm; internal ArglessEventHandlerDelegateProxy(VoidMethod vm) { _vm = vm; } internal void Callback(Object sender, EventArgs e) { _vm(); } internal EventHandler Handler { get { return new EventHandler(Callback); } } } #endif //UNUSED_CODE internal class CalliEventHandlerDelegateProxy { private IntPtr _functionPointer; private Object _target; private bool _argless; internal CalliEventHandlerDelegateProxy(Object target, IntPtr functionPointer, bool argless) { _argless = argless; _target = target; _functionPointer = functionPointer; } internal void Callback(Object sender, EventArgs e) { if (_argless) { System.Web.Util.CalliHelper.ArglessFunctionCaller(_functionPointer, _target); } else { System.Web.Util.CalliHelper.EventArgFunctionCaller(_functionPointer, _target, sender, e); } } internal EventHandler Handler { get { return new EventHandler(Callback); } } } #if LCG_Implementation internal delegate void ArglessMethod(IntPtr methodPtr, Object target); internal delegate void EventArgMethod(IntPtr methodPtr, Object target, Object source, EventArgs e); internal class CalliHelper { internal static ArglessMethod ArglessFunctionCaller; internal static EventArgMethod EventArgFunctionCaller; // Make sure we have reflection permission to use ReflectionEmit and access method [ReflectionPermission(SecurityAction.Assert, Flags = ReflectionPermissionFlag.ReflectionEmit | ReflectionPermissionFlag.MemberAccess)] static CalliHelper() { // generate void(void) calli DynamicMethod dm = new DynamicMethod("void_calli", typeof(void), new Type[] { typeof(IntPtr) /* function ptr */, typeof(Object) /* target */}, typeof(CalliHelper).Module); ILGenerator ilg = dm.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[0], null); ilg.Emit(OpCodes.Ret); ArglessFunctionCaller = (ArglessMethod)dm.CreateDelegate(typeof(ArglessMethod)); // generate void(Object, EventArgs) calli dm = new DynamicMethod("eventarg_calli", typeof(void), new Type[] { typeof(IntPtr) /* function ptr */, typeof(Object) /* target */, typeof(Object) /* sender */, typeof(EventArgs) }, typeof(CalliHelper).Module); ilg = dm.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_2); ilg.Emit(OpCodes.Ldarg_3); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[] { typeof(object) /* sender */, typeof(EventArgs) }, null); ilg.Emit(OpCodes.Ret); EventArgFunctionCaller = (EventArgMethod)dm.CreateDelegate(typeof(EventArgMethod)); } } #endif //LCG_Implementation #if Reflection_Emit_Implementation internal delegate void ArglessMethod(IntPtr methodPtr, Object target); internal delegate void EventArgMethod(IntPtr methodPtr, Object target, Object source, EventArgs e); internal class CalliHelper { internal static ArglessMethod ArglessFunctionCaller; internal static EventArgMethod EventArgFunctionCaller; // Make sure we have reflection permission to use ReflectionEmit and access method [ReflectionPermission(SecurityAction.Assert, Flags = ReflectionPermissionFlag.ReflectionEmit | ReflectionPermissionFlag.MemberAccess)] static CalliHelper() { AssemblyName an = new AssemblyName("CalliHelper"); AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly(an, AssemblyBuilderAccess.Run); ModuleBuilder mb = ab.DefineDynamicModule("CalliHelper.dll"); ConstructorInfo ci = typeof(CLSCompliantAttribute).GetConstructor(new Type[] { typeof(bool) }); CustomAttributeBuilder cb = new CustomAttributeBuilder(ci, new object[] { true }); mb.SetCustomAttribute(cb); TypeBuilder tb = mb.DefineType("System.Web.Util.CalliHelper", TypeAttributes.NotPublic | TypeAttributes.Sealed); MethodBuilder methb = tb.DefineMethod("EventArgMethod", MethodAttributes.Assembly | MethodAttributes.Static, typeof(void), new Type[] { typeof(IntPtr), typeof(object), typeof(object), typeof(EventArgs) }); ILGenerator ilg = methb.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_2); ilg.Emit(OpCodes.Ldarg_3); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[] { typeof(object), typeof(EventArgs) }, null); ilg.Emit(OpCodes.Ret); methb = tb.DefineMethod("ArglessMethod", MethodAttributes.Assembly | MethodAttributes.Static, typeof(void), new Type[] { typeof (IntPtr), typeof(object) }); ilg = methb.GetILGenerator(); ilg.Emit(OpCodes.Ldarg_1); ilg.Emit(OpCodes.Ldarg_0); ilg.EmitCalli(OpCodes.Calli, CallingConventions.HasThis, typeof(void), new Type[0], null); ilg.Emit(OpCodes.Ret); Type t = tb.CreateType(); ArglessFunctionCaller = (ArglessMethod)Delegate.CreateDelegate(typeof(ArglessMethod), t, "ArglessMethod", true); EventArgFunctionCaller = (EventArgMethod)Delegate.CreateDelegate(typeof(EventArgMethod), t, "EventArgMethod", true); //ab.Save("CalliHelper.dll"); } } #endif // Reflection_Emit_Implementation } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Select.cs
- HttpWebResponse.cs
- CodeTypeReferenceCollection.cs
- SqlDataRecord.cs
- _UncName.cs
- DateBoldEvent.cs
- AssertSection.cs
- COM2ExtendedTypeConverter.cs
- BrowsableAttribute.cs
- TextAction.cs
- PassportAuthentication.cs
- LinqDataSourceDisposeEventArgs.cs
- DeviceFilterDictionary.cs
- X509CertificateCollection.cs
- SmtpException.cs
- ComponentCache.cs
- VerificationException.cs
- HMACSHA512.cs
- DataSvcMapFileSerializer.cs
- DesignSurface.cs
- InternalConfigSettingsFactory.cs
- LinqDataSourceStatusEventArgs.cs
- TagMapInfo.cs
- AddInDeploymentState.cs
- WebControlAdapter.cs
- DesignerCategoryAttribute.cs
- RootProfilePropertySettingsCollection.cs
- HttpStreamXmlDictionaryReader.cs
- InkSerializer.cs
- JpegBitmapDecoder.cs
- CodePageEncoding.cs
- TdsParser.cs
- UnsafeNativeMethods.cs
- BitmapEncoder.cs
- SortKey.cs
- EditorAttributeInfo.cs
- RayHitTestParameters.cs
- TrackingDataItem.cs
- TextParagraphView.cs
- ProfileSettings.cs
- remotingproxy.cs
- WindowsPrincipal.cs
- TextDecorationCollection.cs
- WhitespaceRuleReader.cs
- ScriptReference.cs
- TextEndOfLine.cs
- RelatedCurrencyManager.cs
- RowParagraph.cs
- __Error.cs
- XmlAnyAttributeAttribute.cs
- TraceUtility.cs
- ListCommandEventArgs.cs
- _BasicClient.cs
- DesignerDeviceConfig.cs
- UIPermission.cs
- DataTableTypeConverter.cs
- DataGridViewButtonColumn.cs
- ZipIOCentralDirectoryBlock.cs
- GeneralTransform.cs
- MissingSatelliteAssemblyException.cs
- CroppedBitmap.cs
- SynchronizationLockException.cs
- EntityCommandExecutionException.cs
- InternalTypeHelper.cs
- TypeListConverter.cs
- HwndSource.cs
- SubclassTypeValidatorAttribute.cs
- StyleHelper.cs
- DecimalKeyFrameCollection.cs
- LostFocusEventManager.cs
- RegexReplacement.cs
- DoubleAnimationUsingKeyFrames.cs
- ProfileGroupSettingsCollection.cs
- GatewayDefinition.cs
- TextServicesCompartmentEventSink.cs
- MgmtConfigurationRecord.cs
- ToolStripGrip.cs
- QuestionEventArgs.cs
- XmlSchemaFacet.cs
- RuntimeDelegateArgument.cs
- TextBoxRenderer.cs
- DependencyObjectType.cs
- SegmentInfo.cs
- PackageFilter.cs
- EllipseGeometry.cs
- SQLDoubleStorage.cs
- GridViewCancelEditEventArgs.cs
- HttpModuleAction.cs
- MimeTypePropertyAttribute.cs
- XmlCDATASection.cs
- XPathMultyIterator.cs
- ClientBuildManagerCallback.cs
- CodeDirectiveCollection.cs
- DispatcherObject.cs
- ImageField.cs
- DocumentSequence.cs
- SocketElement.cs
- InfoCardRSACryptoProvider.cs
- PolyLineSegmentFigureLogic.cs
- SqlProfileProvider.cs