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.NET Framework 3.5
TraceSource Class
 Switch Property
This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
TraceSource..::.Switch Property

Gets or sets the source switch value.

Namespace:  System.Diagnostics
Assembly:  System (in System.dll)
Visual Basic (Declaration)
Public Property Switch As SourceSwitch
Visual Basic (Usage)
Dim instance As TraceSource
Dim value As SourceSwitch

value = instance.Switch

instance.Switch = value
C#
public SourceSwitch Switch { get; set; }
Visual C++
public:
property SourceSwitch^ Switch {
    SourceSwitch^ get ();
    void set (SourceSwitch^ value);
}
JScript
public function get Switch () : SourceSwitch
public function set Switch (value : SourceSwitch)

Property Value

Type: System.Diagnostics..::.SourceSwitch
A SourceSwitch object representing the source switch value.
ExceptionCondition
ArgumentNullException

Switch is set to nullNothingnullptra null reference (Nothing in Visual Basic).

The Switch property allows the filtering of messages before the trace source calls the listeners.

The switch is used to check whether trace calls should be generated or ignored. Each trace method calls the ShouldTrace method of the SourceSwitch to determine whether to proceed with the trace. If the call returns true, the listeners are called.

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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
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