System 2.0.0.0 4.0.0.0 System.Diagnostics.TraceFilter

One of several different types of filters can be assigned to a trace listener through the property to provide a layer of screening beyond that provided by the . The filter can be used to control the event types that are produced by the listener.

This class filters events based on the value of the property. This property can be set by code or in a configuration file to specify the event type of messages that should be traced by the listener. The value of the property indicates the threshold at which to begin tracing. Event types at and above the specified level are traced. The method, called by listeners to determine if an event should be traced, uses the value of the property.

To set the event type at which to begin tracing, edit the configuration file that corresponds to the name of your application. Within this file, you can add a listener, set its filter type, and specify the event type to trace. The configuration file should be formatted as follows.

`<configuration> <system.diagnostics> <sharedListeners> <add name="Console" type="System.Diagnostics.ConsoleTraceListener"> <filter type="System.Diagnostics.EventTypeFilter" initializeData="Warning" /> </add> </sharedListeners> </system.diagnostics> </configuration>`

For more information about how to initialize data for an , see <filter> Element for <add> for <sharedListeners>.

Indicates whether a listener should trace based on the event type.

- Constructor
  2.0.0.0
  4.0.0.0
  To be added.

  The value of the parameter is used to initialize the property.

  Initializes a new instance of the class.

- Property
  2.0.0.0
  4.0.0.0
  System.Diagnostics.SourceLevels To be added.

  The property indicates the level at which to trace.

  Gets or sets the event type of the messages to trace.

- Method
  2.0.0.0
  4.0.0.0
  System.Boolean `` `` `` `` `` `` `` ``

  If the value of the parameter is greater than or equal to the value of the property, the method returns true.

  Determines whether the trace listener should trace the event.

  trueif the trace should be produced; otherwise, false.

  A that represents the information cache for the trace event. The name of the source. One of the values. A trace identifier number. The format to use for writing an array of arguments, or a message to write. An array of argument objects. A trace data object. An array of trace data objects.