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Console::WriteLine Method (Object)

Writes the text representation of the specified object, followed by the current line terminator, to the standard output stream.

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

[HostProtectionAttribute(SecurityAction::LinkDemand, UI = true)]
static void WriteLine(
	Object^ value


Type: System::Object

The value to write.


An I/O error occurred.

If value is nullptr, only the line terminator is written. Otherwise, the ToString method of value is called to produce its string representation, and the resulting string is written to the standard output stream.

For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.


The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: UI. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following example uses the WriteLine(Object) method to display each value in an object array to the console.

using namespace System;

void main()
   DateTime dateRecorded(2009, 6, 15);
   DateTime startTime(1, 1, 1, 0, 30, 0);
   TimeSpan interval(12, 0, 0);

   Double temperature1 = 52.8;
   Double temperature2 = 63.5;

   Console::WriteLine("Date: {0:d}:\n   Temperature at {1:t}: {2}\n   Temperature at {3:t}: {4}\n", 
                     dateRecorded, startTime, temperature1, 
                     startTime.Add(interval), temperature2);
// The example displays the following output: 
//      Date: 6/15/2009: 
//         Temperature at 12:30 AM: 52.8 
//         Temperature at 12:30 PM: 63.5
using namespace System;

void main()
   array<Object^>^ values = { true, 12.632, 17908, "stringValue",
                              'a', (Decimal) 16907.32 };
   for each (Object^ value in values)
// The example displays the following output: 
//    True 
//    12.632 
//    17908 
//    stringValue 
//    a 
//    16907.32

.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

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

© 2015 Microsoft