Assembly.IsDefined(Type, Boolean) Méthode

  • Référence

Définition

Espace de noms:
System.Reflection
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
Assembly.cs
Source:
Assembly.cs
Source:
Assembly.cs

Indique si un attribut spécifié a été appliqué à l'assembly ou non.

public:
 virtual bool IsDefined(Type ^ attributeType, bool inherit);
public virtual bool IsDefined (Type attributeType, bool inherit);
abstract member IsDefined : Type * bool -> bool
override this.IsDefined : Type * bool -> bool
Public Overridable Function IsDefined (attributeType As Type, inherit As Boolean) As Boolean

Paramètres

attributeType
Type

Type de l'attribut à vérifier pour cet assembly.

inherit
Boolean

Cet argument est ignoré pour les objets de ce type.

Retours

Boolean

true si l'attribut a été appliqué à l'assembly ; sinon, false.

Implémente

IsDefined(Type, Boolean) IsDefined(Type, Boolean)

Exceptions

ArgumentNullException

attributeType a la valeur null.

ArgumentException

attributeType utilise un type non valide.

Exemples

L’exemple de code suivant applique l’attribut AssemblyTitleAttribute à un assembly, puis utilise IsDefined pour indiquer s’il a été appliqué. Il teste également un attribut qui n’a pas été appliqué.

using System;
using System.Reflection;

// Set an assembly attribute.
[assembly:AssemblyTitleAttribute("A title example")]

// Note that the suffix "Attribute" can be omitted:
// [assembly:AssemblyTitle("A title example")]

public class Test {

    public static void Main() {

        // Get the assembly that is executing this method.
        Assembly asm = Assembly.GetCallingAssembly();

        // Get the attribute type just defined.
        Type aType = typeof(AssemblyTitleAttribute);
        Console.WriteLine(asm.IsDefined(aType, false));

        // Try an attribute not defined.
        aType = typeof(AssemblyVersionAttribute);
        Console.WriteLine(asm.IsDefined(aType, false));
    }
}
//
//  This code example produces the following output:
//  True
//  False
//


Imports System.Reflection

' Set an assembly attribute.
<Assembly:AssemblyTitleAttribute("A title example")>

' Note that the suffix "Attribute" can be omitted:
' <Assembly:AssemblyTitle("A title examle")>

Public Class Test
    Public Shared Sub Main()

        ' Get the assembly that is executing this method.
        Dim asm As [Assembly] = [Assembly].GetCallingAssembly

        ' Get the attribute type just defined.
        Dim aType As Type = GetType(AssemblyTitleAttribute)

        Console.WriteLine(asm.IsDefined(aType, false))

        ' Try an attribute not defined.
        aType = GetType(AssemblyVersionAttribute)

        Console.WriteLine(asm.IsDefined(aType, false))

    End Sub
End Class

' This code example produces the following output:
' True
' False
'

S’applique à