source.cpp

#using <System.dll>
usingnamespaceSystem;
usingnamespaceSystem::Diagnostics;

public ref classTest
{
// <Snippet1>
// Class-level declaration.
// Create a TraceSwitch.
static TraceSwitch^ generalSwitch = 
 gcnew TraceSwitch( "General","Entire Application" );

public:
staticvoidMyErrorMethod( Object^ myObject, String^ category )
 {
// Write the message if the TraceSwitch level is set to Error or higher.
 #if defined(DEBUG)
Debug::WriteIf(generalSwitch->TraceError, "Invalid object for category. ");

// Write a second message if the TraceSwitch level is set to Verbose.
Debug::WriteLineIf( generalSwitch->TraceVerbose, myObject, category );
 #endif
 }
// </Snippet1>
};