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TraceSource.GetSupportedAttributes Method

Gets the custom attributes supported by the trace source.

Namespace: System.Diagnostics
Assembly: System (in system.dll)

protected internal virtual string[] GetSupportedAttributes ()
protected String[] GetSupportedAttributes ()
protected internal function GetSupportedAttributes () : String[]
Not applicable.

Return Value

A string array naming the custom attributes supported by the trace source, or a null reference (Nothing in Visual Basic) if there are no custom attributes.

The default implementation for GetSupportedAttributes returns a null reference (Nothing in Visual Basic).

Notes to Inheritors: When inheriting from the TraceSource class or a derived class, you can override the GetSupportedAttributes method to provide custom attributes for your class.

The following code example shows an override of the GetSupportedAttributes method to identify the custom attributes for the MyTraceSource class.

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" };
    }
}

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0
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