TraceListener Class
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Provides the abstract
base class for the listeners who monitor trace and debug output.
public ref class TraceListener abstract : MarshalByRefObject, IDisposable
public ref class TraceListener abstract : IDisposable
public abstract class TraceListener : MarshalByRefObject, IDisposable
public abstract class TraceListener : IDisposable
type TraceListener = class
inherit MarshalByRefObject
interface IDisposable
type TraceListener = class
interface IDisposable
Public MustInherit Class TraceListener
Inherits MarshalByRefObject
Implements IDisposable
Public MustInherit Class TraceListener
Implements IDisposable
- Inheritance
- Inheritance
-
TraceListener
- Derived
- Implements
For examples of how to implement a TraceListener, see the DefaultTraceListener, TextWriterTraceListener and the EventLogTraceListener classes.
You must enable tracing or debugging to use a trace listener. The following syntax is compiler specific. If you use compilers other than C# or Visual Basic, refer to the documentation for your compiler.
To enable debugging in C#, add the
/d:DEBUG
flag to the compiler command line when you compile your code, or you can add#define DEBUG
to the top of your file. In Visual Basic, add the/d:DEBUG=True
flag to the compiler command line.To enable tracing in C#, add the
/d:TRACE
flag to the compiler command line when you compile your code, or add#define TRACE
to the top of your file. In Visual Basic, add the/d:TRACE=True
flag to the compiler command line.
To add a trace listener, edit the configuration file that corresponds to the name of your application. Within this file, you can add a listener, set its type and set its parameter, remove a listener, or clear all the listeners previously set by the application. The configuration file should be formatted similar to the following example.
<configuration>
<system.diagnostics>
<trace autoflush="false" indentsize="4">
<listeners>
<add name="myListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="TextWriterOutput.log" />
<remove name="Default" />
</listeners>
</trace>
</system.diagnostics>
</configuration>
For more information on using configuration files for tracing, see <system.diagnostics>.
Inherit from this class to implement a custom listener for the Debug and Trace classes. At a minimum, you must implement the Write(String) and WriteLine(String) methods. Additionally, you can implement the Fail(String), Close() and Flush() methods.
Trace |
Initializes a new instance of the TraceListener class. |
Trace |
Initializes a new instance of the TraceListener class using the specified name as the listener. |
Attributes |
Gets the custom trace listener attributes defined in the application configuration file. |
Filter |
Gets or sets the trace filter for the trace listener. |
Indent |
Gets or sets the indent level. |
Indent |
Gets or sets the number of spaces in an indent. |
Is |
Gets a value indicating whether the trace listener is thread safe. |
Name |
Gets or sets a name for this TraceListener. |
Need |
Gets or sets a value indicating whether to indent the output. |
Trace |
Gets or sets the trace output options. |
Close() |
When overridden in a derived class, closes the output stream so it no longer receives tracing or debugging output. |
Create |
Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject) |
Dispose() |
Releases all resources used by the TraceListener. |
Dispose(Boolean) |
Releases the unmanaged resources used by the TraceListener and optionally releases the managed resources. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Fail(String, String) |
Emits an error message and a detailed error message to the listener you create when you implement the TraceListener class. |
Fail(String) |
Emits an error message to the listener you create when you implement the TraceListener class. |
Flush() |
When overridden in a derived class, flushes the output buffer. |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Obsolete.
Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject) |
Get |
Gets the custom attributes supported by the trace listener. |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Initialize |
Obsolete.
Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject) |
To |
Returns a string that represents the current object. (Inherited from Object) |
Trace |
Writes trace information, a data object and event information to the listener specific output. |
Trace |
Writes trace information, an array of data objects and event information to the listener specific output. |
Trace |
Writes trace information, a formatted array of objects and event information to the listener specific output. |
Trace |
Writes trace information, a message, and event information to the listener specific output. |
Trace |
Writes trace and event information to the listener specific output. |
Trace |
Writes trace information, a message, a related activity identity and event information to the listener specific output. |
Write(Object, String) |
Writes a category name and the value of the object's ToString() method to the listener you create when you implement the TraceListener class. |
Write(Object) |
Writes the value of the object's ToString() method to the listener you create when you implement the TraceListener class. |
Write(String, String) |
Writes a category name and a message to the listener you create when you implement the TraceListener class. |
Write(String) |
When overridden in a derived class, writes the specified message to the listener you create in the derived class. |
Write |
Writes the indent to the listener you create when you implement this class, and resets the NeedIndent property to |
Write |
Writes a category name and the value of the object's ToString() method to the listener you create when you implement the TraceListener class, followed by a line terminator. |
Write |
Writes the value of the object's ToString() method to the listener you create when you implement the TraceListener class, followed by a line terminator. |
Write |
Writes a category name and a message to the listener you create when you implement the TraceListener class, followed by a line terminator. |
Write |
When overridden in a derived class, writes a message to the listener you create in the derived class, followed by a line terminator. |
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
This type is thread safe.
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