ProxyAttribute Class
Assembly: mscorlib (in mscorlib.dll)
'Declaration <ComVisibleAttribute(True)> _ <AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple:=False, Inherited:=True)> _ Public Class ProxyAttribute Inherits Attribute Implements IContextAttribute 'Usage Dim instance As ProxyAttribute
/** @attribute ComVisibleAttribute(true) */ /** @attribute AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple=false, Inherited=true) */ public class ProxyAttribute extends Attribute implements IContextAttribute
ComVisibleAttribute(true) AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple=false, Inherited=true) public class ProxyAttribute extends Attribute implements IContextAttribute
Apply the current attribute to types that need custom proxies. You can use the ProxyAttribute class to intercept the new (New in Visual Basic) statement by deriving from the ProxyAttribute and placing the attribute on a child of ContextBoundObject. (Placing the proxy attribute on a child of MarshalByRefObject is not supported.)
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| This class makes a link demand and an inheritance demand at the class level. A SecurityException is thrown when either the immediate caller or the derived class does not have infrastructure permission. For details about security demands, see Link Demands and Inheritance Demands. |
<SecurityPermissionAttribute(SecurityAction.Demand, Flags := SecurityPermissionFlag.Infrastructure), _ AttributeUsage(AttributeTargets.Class)> _ Public Class MyProxyAttribute Inherits ProxyAttribute Public Sub New() End Sub 'New ' Create an instance of ServicedComponentProxy Public Overrides Function CreateInstance(serverType As Type) As MarshalByRefObject Return MyBase.CreateInstance(serverType) End Function 'CreateInstance Public Overrides Function CreateProxy(objRef1 As ObjRef, serverType As Type, _ serverObject As Object, serverContext As Context) As RealProxy Dim myCustomProxy As New MyProxy(serverType) If Not (serverContext Is Nothing) Then RealProxy.SetStubData(myCustomProxy, serverContext) End If If Not serverType.IsMarshalByRef And serverContext Is Nothing Then Throw New RemotingException("Bad Type for CreateProxy") End If Return myCustomProxy End Function 'CreateProxy End Class 'MyProxyAttribute <MyProxyAttribute()> _ Public Class CustomServer Inherits ContextBoundObject Public Sub New() Console.WriteLine("CustomServer Base Class constructor called") End Sub 'New Public Sub HelloMethod(str As String) Console.WriteLine("HelloMethod of Server is invoked with message : " + str) End Sub 'HelloMethod End Class 'CustomServer
- SecurityPermission For operating with infrastructure code. Demand value: SecurityAction.LinkDemand; Permission Value: SecurityPermissionFlag.Infrastructure
- SecurityPermission For operating with infrastructure code. Demand value: SecurityAction.InheritanceDemand; Permission Value: SecurityPermissionFlag.Infrastructure
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
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