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TextWriterTraceListener Constructor (String, String)

Initializes a new instance of the TextWriterTraceListener class with the specified name, using the file as the recipient of the debugging and tracing output.

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

'Declaration
Public Sub New ( _
	fileName As String, _
	name As String _
)
'Usage
Dim fileName As String 
Dim name As String 

Dim instance As New TextWriterTraceListener(fileName, _
	name)

Parameters

fileName
Type: System.String

The name of the file the TextWriterTraceListener writes to.

name
Type: System.String

The name of the new instance.

ExceptionCondition
ArgumentNullException

The stream is Nothing.

This constructor initializes the Name property to the name parameter or to an empty string (""), if the name parameter is Nothing.

The following code example creates a TextWriterTraceListener using the TextWriterTraceListener(String, String) constructor, then adds it to the TraceListenerCollection. The example writes two messages to this TextWriterTraceListener, then writes a message to all TraceListener objects in the TraceListenerCollection. Finally, it flushes and closes the TextWriterTraceListener.

Imports System
Imports System.Diagnostics
Imports Microsoft.VisualBasic

Module TWTLConStringNameMod

    Const LISTENER_NAME As String = "myStringListener" 

    ' args(0) is the specification of the trace log file. 
    Sub Main(ByVal args() As String)

        ' Verify that a parameter was entered. 
        If args.Length = 0 Then
            Console.WriteLine("Enter a trace file specification.")

        Else 
            ' Create a TextWriterTraceListener object that takes a  
            ' file specification. 
            Dim textListener As TextWriterTraceListener
            Try
                textListener = _
                    New TextWriterTraceListener(args(0), LISTENER_NAME)
                Trace.Listeners.Add(textListener)
            Catch ex As Exception
                Console.WriteLine( _
                    "Error creating TextWriterTraceListener for trace " & _
                    "file ""{0}"":" & vbCrLf & "{1}", args(0), ex.Message)
                Return 
            End Try 

            ' Write these messages only to this TextWriterTraceListener.
            textListener.WriteLine( _
                "This is trace listener named """ & textListener.Name & """")
            textListener.WriteLine("Trace written to a file: " & _
                vbCrLf & "    """ & args(0) & """")

            ' Write a message to all trace listeners.
            Trace.WriteLine(String.Format( _
                "This trace message written {0} to all listeners.", Now))

            ' Flush and close the output.
            Trace.Flush()
            textListener.Flush()
            textListener.Close()
        End If 
    End Sub 
End Module

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0, 2.0, 1.0
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