Implements the IsContextful property and determines whether the Type can be hosted in a context.
Assembly: mscorlib (in mscorlib.dll)
Syntax
Examples
The following example demonstrates a use of the IsContextfulImpl method.
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic
Public Class MyTypeDelegatorClass
Inherits TypeDelegator
Public myElementType As String = Nothing
Private myType As Type = Nothing
Public Sub New(ByVal myType As Type)
MyBase.New(myType)
Me.myType = myType
End Sub 'New
' Override IsContextfulImpl.
Protected Overrides Function IsContextfulImpl() As Boolean
' Check whether the type is contextful.
If myType.IsContextful Then
myElementType = " is contextful "
Return True
End If
Return False
End Function 'IsContextfulImpl
End Class 'MyTypeDelegatorClass
Public Class MyTypeDemoClass
Public Shared Sub Main()
Try
Dim myType As MyTypeDelegatorClass
Console.WriteLine("Check whether MyContextBoundClass can be hosted in a context.")
' Check whether MyContextBoundClass is contextful.
myType = New MyTypeDelegatorClass(GetType(MyContextBoundClass))
If myType.IsContextful Then
Console.WriteLine(GetType(MyContextBoundClass).ToString() + " can be hosted in a context.")
Else
Console.WriteLine(GetType(MyContextBoundClass).ToString() + " cannot be hosted in a context.")
End If
' Check whether the int type is contextful.
myType = New MyTypeDelegatorClass(GetType(MyTypeDemoClass))
Console.WriteLine(ControlChars.NewLine + "Check whether MyTypeDemoClass can be hosted in a context.")
If myType.IsContextful Then
Console.WriteLine(GetType(MyTypeDemoClass).ToString() + " can be hosted in a context.")
Else
Console.WriteLine(GetType(MyTypeDemoClass).ToString() + " cannot be hosted in a context.")
End If
Catch e As Exception
Console.WriteLine("Exception: {0}", e.Message.ToString())
End Try
End Sub 'Main
End Class 'MyTypeDemoClass
' This class demonstrates the IsContextfulImpl method.
Public Class MyContextBoundClass
Inherits ContextBoundObject
Public myString As String = "This class is used to demonstrate members of the Type class."
End Class 'MyContextBoundClass
using System;
using System.Reflection;
public class MyTypeDelegatorClass : TypeDelegator
{
public string myElementType = null;
private Type myType = null ;
public MyTypeDelegatorClass(Type myType) : base(myType)
{
this.myType = myType;
}
// Override IsContextfulImpl.
protected override bool IsContextfulImpl()
{
// Check whether the type is contextful.
if(myType.IsContextful)
{
myElementType = " is contextful ";
return true;
}
return false;
}
}
public class MyTypeDemoClass
{
public static void Main()
{
try
{
MyTypeDelegatorClass myType;
Console.WriteLine ("Check whether MyContextBoundClass can be hosted in a context.");
// Check whether MyContextBoundClass is contextful.
myType = new MyTypeDelegatorClass(typeof(MyContextBoundClass));
if( myType.IsContextful)
{
Console.WriteLine(typeof(MyContextBoundClass) + " can be hosted in a context.");
}
else
{
Console.WriteLine(typeof(MyContextBoundClass) + " cannot be hosted in a context.");
}
// Check whether the int type is contextful.
myType = new MyTypeDelegatorClass(typeof(MyTypeDemoClass));
Console.WriteLine ("\nCheck whether MyTypeDemoClass can be hosted in a context.");
if( myType.IsContextful)
{
Console.WriteLine(typeof(MyTypeDemoClass) + " can be hosted in a context.");
}
else
{
Console.WriteLine(typeof(MyTypeDemoClass) + " cannot be hosted in a context.");
}
}
catch( Exception e )
{
Console.WriteLine("Exception: {0}", e.Message);
}
}
}
// This class demonstrates IsContextfulImpl.
public class MyContextBoundClass : ContextBoundObject
{
public string myString = "This class is used to demonstrate members of the Type class.";
}
using namespace System;
using namespace System::Reflection;
public ref class MyTypeDelegatorClass: public TypeDelegator
{
public:
String^ myElementType;
private:
Type^ myType;
public:
MyTypeDelegatorClass( Type^ myType )
: TypeDelegator( myType )
{
this->myType = myType;
}
protected:
// Override IsContextfulImpl.
virtual bool IsContextfulImpl() override
{
// Check whether the type is contextful.
if ( myType->IsContextful )
{
myElementType = " is contextful ";
return true;
}
return false;
}
};
public ref class MyTypeDemoClass{};
// This class demonstrates IsContextfulImpl.
public ref class MyContextBoundClass: public ContextBoundObject
{
public:
String^ myString;
};
int main()
{
try
{
MyTypeDelegatorClass^ myType;
Console::WriteLine( "Check whether MyContextBoundClass can be hosted in a context." );
// Check whether MyContextBoundClass is contextful.
myType = gcnew MyTypeDelegatorClass( MyContextBoundClass::typeid );
if ( myType->IsContextful )
{
Console::WriteLine( "{0} can be hosted in a context.", MyContextBoundClass::typeid );
}
else
{
Console::WriteLine( "{0} cannot be hosted in a context.", MyContextBoundClass::typeid );
}
myType = gcnew MyTypeDelegatorClass( MyTypeDemoClass::typeid );
Console::WriteLine( "\nCheck whether MyTypeDemoClass can be hosted in a context." );
if ( myType->IsContextful )
{
Console::WriteLine( "{0} can be hosted in a context.", MyTypeDemoClass::typeid );
}
else
{
Console::WriteLine( "{0} cannot be hosted in a context.", MyTypeDemoClass::typeid );
}
}
catch ( Exception^ e )
{
Console::WriteLine( "Exception: {0}", e->Message );
}
}
Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.