TraceSource.GetSupportedAttributes Metode

Definisi

Ruang nama:

System.Diagnostics

Rakitan:

System.Diagnostics.TraceSource.dll

Sumber:

TraceSource.cs

Mendapatkan atribut kustom yang didukung oleh sumber pelacakan.

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

protected virtual string[]? GetSupportedAttributes ();

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

Protected Overridable Function GetSupportedAttributes () As String()

Mengembalikan

String[]

Array string yang memberi nama atribut kustom yang didukung oleh sumber pelacakan, atau null jika tidak ada atribut kustom.

Contoh

Contoh kode berikut menunjukkan penimpaan GetSupportedAttributes metode untuk mengidentifikasi atribut kustom untuk MyTraceSource kelas .

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

Keterangan

Implementasi default untuk GetSupportedAttributes mengembalikan null.

Catatan Bagi Inheritor

Saat mewarisi dari TraceSource kelas atau kelas turunan, Anda dapat mengambil alih GetSupportedAttributes() metode untuk menyediakan atribut kustom untuk kelas Anda.