Type.IsContextful Eigenschaft

public:
 property bool IsContextful { bool get(); };

public bool IsContextful { get; }

member this.IsContextful : bool

Public ReadOnly Property IsContextful As Boolean

Eigenschaftswert

truewenn die Type in einem Kontext gehostet werden kann; andernfalls . false

Implementiert

Beispiele

Im folgenden Beispiel werden die IsContextfulIsMarshalByRefEigenschaften und Eigenschaften IsPrimitive der Type Klasse veranschaulicht. Er überprüft, ob der angegebene Typ im Kontext gehostet werden kann, ob er anhand eines Verweises gemarstet werden kann und ob es sich bei dem Typ um einen primitiven Datentyp handelt.

using System;
using System.Runtime.Remoting.Contexts;

public class ContextBoundClass: ContextBoundObject
{
    public string Value = "The Value property.";
}

public class Example
{
    public static void Main()
    {
         // Determine whether the types can be hosted in a Context.
         Console.WriteLine("The IsContextful property for the {0} type is {1}.",
                           typeof(Example).Name, typeof(Example).IsContextful);
         Console.WriteLine("The IsContextful property for the {0} type is {1}.",
                           typeof(ContextBoundClass).Name, typeof(ContextBoundClass).IsContextful);

         // Determine whether the types are marshalled by reference.
         Console.WriteLine("The IsMarshalByRef property of {0} is {1}.",
                           typeof(Example).Name, typeof(Example).IsMarshalByRef);
         Console.WriteLine("The IsMarshalByRef property of {0} is {1}.",
                           typeof(ContextBoundClass).Name, typeof(ContextBoundClass).IsMarshalByRef);

         // Determine whether the types are primitive datatypes.
         Console.WriteLine("{0} is a primitive data type: {1}.",
                           typeof(int).Name, typeof(int).IsPrimitive);
         Console.WriteLine("{0} is a primitive data type: {1}.",
                           typeof(string).Name, typeof(string).IsPrimitive);
    }
}
// The example displays the following output:
//    The IsContextful property for the Example type is False.
//    The IsContextful property for the ContextBoundClass type is True.
//    The IsMarshalByRef property of Example is False.
//    The IsMarshalByRef property of ContextBoundClass is True.
//    Int32 is a primitive data type: True.
//    String is a primitive data type: False.

open System

type ContextBoundClass() as this =
    inherit ContextBoundObject()
    [<DefaultValue>]
    val mutable public Value : string 
    do 
        this.Value <- "The Value property."

type Example() = class end

// Determine whether the types can be hosted in a Context.
printfn $"The IsContextful property for the {typeof<Example>.Name} type is {typeof<Example>.IsContextful}."
printfn $"The IsContextful property for the {typeof<ContextBoundClass>.Name} type is {typeof<ContextBoundClass>.IsContextful}."

// Determine whether the types are marshalled by reference.
printfn $"The IsMarshalByRef property of {typeof<Example>.Name} is {typeof<Example>.IsMarshalByRef}."
printfn $"The IsMarshalByRef property of {typeof<ContextBoundClass>.Name} is {typeof<ContextBoundClass>.IsMarshalByRef}."

// Determine whether the types are primitive datatypes.
printfn $"{typeof<int>.Name} is a primitive data type: {typeof<int>.IsPrimitive}."
printfn $"{typeof<string>.Name} is a primitive data type: {typeof<string>.IsPrimitive}."
// The example displays the following output:
//    The IsContextful property for the Example type is False.
//    The IsContextful property for the ContextBoundClass type is True.
//    The IsMarshalByRef property of Example is False.
//    The IsMarshalByRef property of ContextBoundClass is True.
//    Int32 is a primitive data type: True.
//    String is a primitive data type: False.

Imports System.Runtime.Remoting.Contexts

Public Class ContextBoundClass : Inherits ContextBoundObject
    Public Value As String = "The Value property."
End Class

Public Class Example
    Public Shared Sub Main()
         ' Determine whether the types can be hosted in a Context.
         Console.WriteLine("The IsContextful property for the {0} type is {1}.",
                           GetType(Example).Name, GetType(Example).IsContextful)
         Console.WriteLine("The IsContextful property for the {0} type is {1}.",
                           GetType(ContextBoundClass).Name, GetType(ContextBoundClass).IsContextful)
         ' Determine whether the types are marshalled by reference.
         Console.WriteLine("The IsMarshalByRef property of {0} is {1}.",
                           GetType(Example).Name, GetType(Example).IsMarshalByRef)
         Console.WriteLine("The IsMarshalByRef property of {0} is {1}.",
                           GetType(ContextBoundClass).Name, GetType(ContextBoundClass).IsMarshalByRef)
         ' Determine whether the types are primitive datatypes.
         Console.WriteLine("{0} is a primitive data type: {1}.",
                           GetType(Integer).Name, GetType(Integer).IsPrimitive)
         Console.WriteLine("{0} is a primitive data type: {1}.",
                           GetType(String).Name, GetType(String).IsPrimitive)
    End Sub
End Class
' The example displays the following output:
'    The IsContextful property for the Example type is False.
'    The IsContextful property for the ContextBoundClass type is True.
'    The IsMarshalByRef property of Example is False.
'    The IsMarshalByRef property of ContextBoundClass is True.
'    Int32 is a primitive data type: True.
'    String is a primitive data type: False.

Hinweise

Ein Kontext fängt Aufrufe an die Klassenmember ab und erzwingt Richtlinien, die auf die Klasse angewendet werden, z. B. Synchronisierung. Ausführlichere Informationen zu Remotingkontexten finden Sie unter Context.

Wenn der aktuelle Parameter in der Definition eines generischen Typs oder einer generischen Type Methode darstellt, gibt diese Eigenschaft immer zurück false.

Weitere Informationen

• IsContextfulImpl()