MemberInfo.GetCustomAttributes メソッド (Boolean)

[アーティクル]
03/28/2008

派生クラスによってオーバーライドされた場合、すべてのカスタム属性の配列を返します。

Overloads Public MustOverride Function GetCustomAttributes( _
   ByVal inherit As Boolean _) As Object() Implements ICustomAttributeProvider.GetCustomAttributes
[C#]
public abstract object[] GetCustomAttributes(boolinherit);
[C++]
public: virtual Object* GetCustomAttributes(boolinherit)  __gc[] = 0;
[JScript]
public abstract function GetCustomAttributes(
   inherit : Boolean) : Object[];

パラメータ

inherit
このメンバの継承チェインを検索して属性を見つけるかどうかを指定します。

戻り値

すべてのカスタム属性の配列。定義されている属性がない場合は要素がゼロの配列。

実装

ICustomAttributeProvider.GetCustomAttributes

使用例

[Visual Basic, C#, C++] カスタム属性を作成して MyClass.MyMethod に関連付け、実行時にこの属性を取得してその結果を表示する例を次に示します。

 
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

' Define a custom attribute with one named parameter.
<AttributeUsage(AttributeTargets.All)> Public Class MyAttribute
    Inherits Attribute
    Private myName As String

    Public Sub New(ByVal name As String)
        myName = name
    End Sub 'New

    Public ReadOnly Property Name() As String
        Get
            Return myName
        End Get
    End Property
End Class 'MyAttribute

' Define a class that has the custom attribute associated with one of its members.
Public Class MyClass1

    <MyAttribute("This is an example attribute.")> Public Sub MyMethod(ByVal i As Integer)
        Return
    End Sub 'MyMethod
End Class 'MyClass1


Public Class MemberInfo_GetCustomAttributes

    Public Shared Sub Main()
        Try
            ' Get the type of MyClass1.
            Dim myType As Type = GetType(MyClass1)
            ' Get the members associated with MyClass1.
            Dim myMembers As MemberInfo() = myType.GetMembers()

            ' Display the attributes for each of the members of MyClass1.
            Dim i As Integer
            For i = 0 To myMembers.Length - 1
                Dim myAttributes As [Object]() = myMembers(i).GetCustomAttributes(False)
                If myAttributes.Length > 0 Then
                    Console.WriteLine("The attributes for the member {0} are: ", myMembers(i))
                    Dim j As Integer
                    For j = 0 To myAttributes.Length - 1
                        Console.WriteLine("The type of the attribute is: {0}", myAttributes(j))
                    Next j
                End If
            Next i
        Catch e As Exception
            Console.WriteLine("An exception occurred: {0}.", e.Message)
        End Try
    End Sub 'Main
End Class 'MemberInfo_GetCustomAttributes

[C#] 
using System;
using System.Reflection;

// Define a custom attribute with one named parameter.
[AttributeUsage(AttributeTargets.All)]
public class MyAttribute : Attribute
{
    private string myName;
    public MyAttribute(string name)
    {
        myName = name;
    }
    public string Name
    {
        get
        {
            return myName;
        }
    }
}

// Define a class that has the custom attribute associated with one of its members.
public class MyClass1
{
    [MyAttribute("This is an example attribute.")]
    public void MyMethod(int i)
    {
        return;
    }
}

public class MemberInfo_GetCustomAttributes
{
    public static void Main()
    {
        try
        {
            // Get the type of MyClass1.
            Type myType = typeof(MyClass1);
            // Get the members associated with MyClass1.
            MemberInfo[] myMembers = myType.GetMembers();

            // Display the attributes for each of the members of MyClass1.
            for(int i = 0; i < myMembers.Length; i++)
            {
                Object[] myAttributes = myMembers[i].GetCustomAttributes(true);
                if(myAttributes.Length > 0)
                {
                    Console.WriteLine("\nThe attributes for the member {0} are: \n", myMembers[i]);
                    for(int j = 0; j < myAttributes.Length; j++)
                        Console.WriteLine("The type of the attribute is {0}.", myAttributes[j]);
                }
            }
        }
        catch(Exception e)
        {
            Console.WriteLine("An exception occurred: {0}", e.Message);
        }
    }
}

[C++] 
#using <mscorlib.dll>

using namespace System;
using namespace System::Reflection;

// Define a custom attribute with one named parameter.
[AttributeUsage(AttributeTargets::All)]
public __gc class MyAttribute : public Attribute
{
private:
   String* myName;
public:
   MyAttribute(String* name) {
      myName = name;
   }
   __property String* get_Name()
   {
         return myName;
   }
};

// Define a class that has the custom attribute associated with one of its members.
public __gc class MyClass1 
{
public:
   [MyAttribute(S"This is an example attribute.")]
   void MyMethod(int i) {
      return;
   }
};

int main()
{
   try {
      // Get the type of MyClass1.
      Type* myType = __typeof(MyClass1);
      // Get the members associated with MyClass1.
      MemberInfo* myMembers[] = myType->GetMembers();

      // Display the attributes for each of the members of MyClass1.
      for (int i = 0; i < myMembers->Length; i++) {
         Object* myAttributes[] = myMembers[i]->GetCustomAttributes(true);
         if (myAttributes->Length > 0) {
            Console::WriteLine(S"\nThe attributes for the member {0} are: \n", myMembers->Item[i]);
            for (int j = 0; j < myAttributes->Length; j++)
               Console::WriteLine(S"The type of the attribute is {0}.", myAttributes->Item[j]);
         }
      }
   } catch (Exception* e) {
      Console::WriteLine(S"An exception occurred: {0}", e->Message);
   }
}

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタボタンをクリックします。

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET

参照

次の方法で共有

MemberInfo.GetCustomAttributes メソッド (Boolean)

パラメータ

戻り値

実装

使用例

必要条件

参照

その他のリソース