Console.WriteLine Method

Updated: April 2009

Writes the current line terminator to the standard output stream.

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

[HostProtectionAttribute(SecurityAction.LinkDemand, UI = true)]
public static void WriteLine()

ExceptionCondition
IOException

An I/O error occurred.

NoteNote:

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 default line terminator is a string whose value is a carriage return followed by a line feed ("\r\n" in C#, or vbCrLf in Visual Basic). You can change the line terminator by setting the TextWriter.NewLine property of the Out property to another string. The example provides an illustration.

The example changes the line terminator from its default value of "\r\n" or vbCrLf to "\r\n\r\n" or vbCrLf + vbCrLf. It then calls the WriteLine() and WriteLine(String) methods to display output to the console.

using System;

public class Example
{
   public static void Main()
   {
      string[] lines = { "This is the first line.", 
                         "This is the second line." };
      // Output the lines using the default newline sequence.
      Console.WriteLine("With the default new line characters:");
      Console.WriteLine();
      foreach (string line in lines)
         Console.WriteLine(line);

      Console.WriteLine();

      // Redefine the newline characters to double space.
      Console.Out.NewLine = "\r\n\r\n";
      // Output the lines using the new newline sequence.
      Console.WriteLine("With redefined new line characters:");
      Console.WriteLine();
      foreach (string line in lines)
         Console.WriteLine(line);
   }
}
// The example displays the following output: 
//       With the default new line characters: 
//        
//       This is the first line. 
//       This is the second line. 
//        
//       With redefined new line characters: 
//        
//        
//        
//       This is the first line. 
//        
//       This is the second line.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Date

History

Reason

April 2009

Replaced the example.

Customer feedback.

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft