ITraceWriter.Trace Method (HttpRequestMessage, String, TraceLevel, Action<TraceRecord>)

Invokes the specified traceAction to allow setting values in a new TraceRecord if and only if tracing is permitted at the given category and level.

Namespace:   System.Web.Http.Tracing
Assembly:  System.Web.Http (in System.Web.Http.dll)

Syntax

void Trace(
    HttpRequestMessage request,
    string category,
    TraceLevel level,
    Action<TraceRecord> traceAction
)

void Trace(
    HttpRequestMessage^ request,
    String^ category,
    TraceLevel level,
    Action<TraceRecord^>^ traceAction
)

abstract Trace : 
        request:HttpRequestMessage *
        category:string *
        level:TraceLevel *
        traceAction:Action<TraceRecord> -> unit

Sub Trace (
    request As HttpRequestMessage,
    category As String,
    level As TraceLevel,
    traceAction As Action(Of TraceRecord)
)

Parameters

• request
  Type: System.Net.Http.HttpRequestMessage

  The current HttpRequestMessage. It may be null but doing so will prevent subsequent trace analysis from correlating the trace to a particular request.

• category
  Type: System.String

  The logical category for the trace. Users can define their own.

• level
  Type: System.Web.Http.Tracing.TraceLevel

  The TraceLevel at which to write this trace.

• traceAction
  Type: System.Action<TraceRecord>

  The action to invoke if tracing is enabled. The caller is expected to fill in the fields of the given TraceRecord in this action.

See Also

ITraceWriter Interface
System.Web.Http.Tracing Namespace

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