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Debug.WriteLine Method (Object)

Writes the value of the object's ToString method to the trace listeners in the Listeners collection.

Namespace:  System.Diagnostics
Assemblies:   System.Diagnostics.Debug (in System.Diagnostics.Debug.dll)
  System (in System.dll)

[ConditionalAttribute("DEBUG")]
public static void WriteLine(
	Object value
)

Parameters

value
Type: System.Object

An object whose name is sent to the Listeners.

By default, the output is written to an instance of DefaultTraceListener.

This method calls the WriteLine method of the trace listener.

The following example creates a TraceSwitch named generalSwitch. This switch is set outside of the code sample.

If the switch is set to the TraceLevel Error or higher, the example outputs the first error message to the Listeners. For information on adding a listener to the Listeners collection, see the TraceListenerCollection class.

Then, if the TraceLevel is set to Verbose, the example outputs the name of the object on the same line as the first message. A line terminator follows the second message.

// Class-level declaration. 
 // Create a TraceSwitch. 
 static TraceSwitch generalSwitch = new TraceSwitch("General", "Entire Application");

 static public void MyErrorMethod(Object myObject) {
    // Write the message if the TraceSwitch level is set to Error or higher. 
    if(generalSwitch.TraceError)
       Debug.Write("Invalid object. ");

    // Write a second message if the TraceSwitch level is set to Verbose. 
    if(generalSwitch.TraceVerbose)
       Debug.WriteLine(myObject);
 }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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