Csharp/CSharp Tutorial/Development/Trace

Trace Assert

<source lang="csharp">using System; using System.IO; using System.Diagnostics; class MainClass {

 [STAThread]
 static void Main(string[] args)
 {
   int i = 0;
   Trace.Assert((i == 1), "My Trace Assertion");
 }

}</source>

Trace to a file

<source lang="csharp">using System; using System.IO; using System.Diagnostics; class MainClass {

 [STAThread]
 static void Main(string[] args)
 {
   FileStream Log = new FileStream("Log.txt", FileMode.OpenOrCreate);
   Trace.Listeners.Add(new TextWriterTraceListener(Log));
   Trace.WriteLine("My Trace String To Log File");
   Trace.Flush();
   Log.Close();
 }

}</source>

Trace to console

<source lang="csharp">using System; using System.IO; using System.Diagnostics; class MainClass {

 [STAThread]
 static void Main(string[] args)
 {
   Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
   Trace.WriteLine("My Trace to the console");
   
   }

}</source>

Tracing To Debugger

<source lang="csharp">using System; using System.IO; using System.Diagnostics; class MainClass {

 [STAThread]
 static void Main(string[] args)
 {
   Trace.WriteLine("My Trace String");
   Trace.Flush();
 }

}</source>

Tracing To EventLog

<source lang="csharp">using System; using System.IO; using System.Diagnostics; class MainClass {

 [STAThread]
 static void Main(string[] args)
 {
   //You can change the listener with the following code
   EventLogTraceListener EventListener = new EventLogTraceListener("MyApp");
   Trace.Listeners.Add(EventListener);
   
   Trace.WriteLine("My Trace String To Console");
   
   }

}</source>

Use Trace Switch

<source lang="csharp">using System; using System.Diagnostics; class TracingExample {

 static void Main(string[] args)
 {
   TraceSwitch General = new TraceSwitch("General", "Application Switch");
   Trace.WriteLineIf(General.TraceError, "General - Error Tracing Enabled");
   Trace.WriteLineIf(General.TraceWarning, "General - Warning Tracing Enabled");
   Trace.WriteLineIf(General.TraceInfo, "General - Info Tracing Enabled");
   Trace.WriteLineIf(General.TraceVerbose, "General - Verbose Tracing Enabled");
 }

}

/* <?xml version="1.0" encoding="utf-8" ?> <configuration>

   <system.diagnostics>
       <switches>
           <add name="General" value="1" />
       </switches>
   </system.diagnostics>

</configuration>

• /</source>

Use Trace Switch defined in config file

<source lang="csharp">using System; using System.Diagnostics; class TracingExample {

 static void Main(string[] args)
 {
   TraceSwitch MyComponent = new TraceSwitch("MyComponent", "Application Switch");
   Trace.WriteLineIf(MyComponent.TraceError, "MyComponent - Error Tracing Enabled");
   Trace.WriteLineIf(MyComponent.TraceWarning, "MyComponent - Warning Tracing Enabled");
   Trace.WriteLineIf(MyComponent.TraceInfo, "MyComponent - Info Tracing Enabled");
   Trace.WriteLineIf(MyComponent.TraceVerbose, "MyComponent - Verbose Tracing Enabled");
 }

}

/* <?xml version="1.0" encoding="utf-8" ?> <configuration>

   <system.diagnostics>
       <switches>
           <add name="MyComponent" value="3" />
       </switches>
   </system.diagnostics>

</configuration>

• /</source>