TraceSource.GetSupportedAttributes Méthode

protected public:
 virtual cli::array <System::String ^> ^ GetSupportedAttributes();

protected:
 virtual cli::array <System::String ^> ^ GetSupportedAttributes();

protected internal virtual string[] GetSupportedAttributes();

protected virtual string[] GetSupportedAttributes();

abstract member GetSupportedAttributes : unit -> string[]
override this.GetSupportedAttributes : unit -> string[]

Protected Friend Overridable Function GetSupportedAttributes () As String()

Protected Overridable Function GetSupportedAttributes () As String()

Retours

Tableau de chaînes nommant les attributs personnalisés pris en charge par la source de trace, ou null s’il n’existe aucun attribut personnalisé.

Exemples

L’exemple de code suivant montre un remplacement de la GetSupportedAttributes méthode pour identifier les attributs personnalisés de la MyTraceSource classe.

public class MyTraceSource : TraceSource
{
    string firstAttribute = "";
    string secondAttribute = "";
    public MyTraceSource(string n) : base(n) {}

    public string FirstTraceSourceAttribute
    {
        get {
            foreach (DictionaryEntry de in this.Attributes)
                if (de.Key.ToString().ToLower() == "firsttracesourceattribute")
                    firstAttribute = de.Value.ToString() ;
            return firstAttribute;
        }
        set { firstAttribute = value; }
    }

    public string SecondTraceSourceAttribute
    {
        get {
            foreach (DictionaryEntry de in this.Attributes)
                if (de.Key.ToString().ToLower() == "secondtracesourceattribute")
                    secondAttribute = de.Value.ToString();
            return secondAttribute; }
        set { secondAttribute = value; }
    }

    protected override string[] GetSupportedAttributes()
    {
        // Allow the use of the attributes in the configuration file.
        return new string[] { "FirstTraceSourceAttribute", "SecondTraceSourceAttribute" };
    }
}

Public Class MyTraceSource
    Inherits TraceSource
    Private firstAttribute As String = ""
    Private secondAttribute As String = ""

    Public Sub New(ByVal n As String)
        MyBase.New(n)

    End Sub

    Public Property FirstTraceSourceAttribute() As String
        Get
            Dim de As DictionaryEntry
            For Each de In Me.Attributes
                If de.Key.ToString().ToLower() = "firsttracesourceattribute" Then
                    firstAttribute = de.Value.ToString()
                End If
            Next de
            Return firstAttribute
        End Get
        Set(ByVal value As String)
            firstAttribute = value
        End Set
    End Property

    Public Property SecondTraceSourceAttribute() As String
        Get
            Dim de As DictionaryEntry
            For Each de In Me.Attributes
                If de.Key.ToString().ToLower() = "secondtracesourceattribute" Then
                    secondAttribute = de.Value.ToString()
                End If
            Next de
            Return secondAttribute
        End Get
        Set(ByVal value As String)
            secondAttribute = Value
        End Set
    End Property

    Protected Overrides Function GetSupportedAttributes() As String()
        ' Allow the use of the attributes in the configuration file.
        Return New String() {"FirstTraceSourceAttribute", "SecondTraceSourceAttribute"}

    End Function 'GetSupportedAttributes
End Class

Remarques

Implémentation par défaut pour GetSupportedAttributes les retours null.

Notes pour les héritiers

Lorsque vous héritez de la TraceSource classe ou d’une classe dérivée, vous pouvez remplacer la GetSupportedAttributes() méthode pour fournir des attributs personnalisés pour votre classe.