Export (0) Print
Expand All

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()

Return Value

Type: System.String[]
A string array naming the custom attributes supported by the trace source, or null if there are no custom attributes.

The default implementation for GetSupportedAttributes returns null.

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" };
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Show:
© 2015 Microsoft