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TraceContext Class

Captures and presents execution details about a Web request. This class cannot be inherited.

System.Object
  System.Web.TraceContext

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

public sealed class TraceContext

The TraceContext type exposes the following members.

  NameDescription
Public methodTraceContextInfrastructure. Initializes a new instance of the TraceContext class.
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  NameDescription
Public propertyIsEnabledGets or sets a value indicating whether tracing is enabled for the current Web request.
Public propertyTraceModeGets or sets the sorted order in which trace messages should be output to a requesting browser.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodWarn(String)Writes a trace message to the trace log. All warnings appear in the log as red text.
Public methodWarn(String, String)Writes trace information to the trace log, including any user-defined categories and trace messages. All warnings appear in the log as red text.
Public methodWarn(String, String, Exception)Writes trace information to the trace log, including any user-defined categories, trace messages, and error information. All warnings appear in the log as red text.
Public methodWrite(String)Writes a trace message to the trace log.
Public methodWrite(String, String)Writes trace information to the trace log, including a message and any user-defined categories.
Public methodWrite(String, String, Exception)Writes trace information to the trace log, including any user-defined categories, trace messages, and error information.
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  NameDescription
Public eventTraceFinishedRaised by the TraceContext object to expose trace messages after all request information is gathered.
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You can use this class to append messages to specific trace categories. For example, if you are creating an instance of the Calendar class for your application, you might include the trace message "Starting To Render" in a rendering procedure, and "Raising OnChange Event" in an event handler procedure.

You can also use the TraceContext class to obtain a set of trace records at the end of request execution for custom processing. For more information, see ASP.NET Tracing Overview.

To enable tracing, set the Trace attribute in the @ Page directive or the IsEnabled property to true. When tracing is enabled, in addition to showing user-provided trace content, the Page class automatically includes performance data, control-tree structure information, and state management content for every request.

TopicLocation
Walkthrough: Using Tracing in Visual Web Developer to Help Find Web Page ErrorsBuilding ASP .NET Web Applications in Visual Studio

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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