Console.WriteLine Method (String) (System)

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.NET Framework Class Library
Console.WriteLine Method (String)

Writes the specified string value, followed by the current line terminator, to the standard output stream.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
Syntax
Visual Basic
<HostProtectionAttribute(SecurityAction.LinkDemand, UI := True)> _
Public Shared Sub WriteLine ( _
	value As String _
)
C#
[HostProtectionAttribute(SecurityAction.LinkDemand, UI = true)]
public static void WriteLine(
	string value
)
Visual C++
[HostProtectionAttribute(SecurityAction::LinkDemand, UI = true)]
public:
static void WriteLine(
	String^ value
)
F#
[<HostProtectionAttribute(SecurityAction.LinkDemand, UI = true)>]
static member WriteLine : 
        value:string -> unit

Parameters

value
Type: System.String
The value to write.
Exceptions
Exception Condition
IOException

An I/O error occurred.

Remarks

If value is null, only the line terminator is written to the standard output stream.

For more information about the line terminator, see the Remarks section of the WriteLine() method.

Note Note

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.
Examples

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.

Visual Basic

Module Example
   Public Sub Main()
      Dim lines() As String = { "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()
      For Each line As String In lines
         Console.WriteLine(line)
      Next
      Console.WriteLine()

      ' Redefine the newline characters to double space.
      Console.Out.NewLine = vbCrLf + vbCrLf
      ' Output the lines using the new newline sequence.
      Console.WriteLine("With redefined new line characters:")
      Console.WriteLine()
      For Each line As String In lines
         Console.WriteLine(line)
      Next
   End Sub
End Module
' 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.
C#

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.
Visual C++

using namespace System;

void main()
{
   array<String^>^ lines = gcnew array<String^> { "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();
   for each (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();
   for each (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.
Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
.NET Framework Security
  • UIPermission  

    for modifying safe top-level windows and subwindows. Associated enumeration: UIPermissionWindow.SafeTopLevelWindows

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
See Also

Reference

Console Class
WriteLine Overload
System Namespace
Read
ReadLine
Write