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Console::WriteLine Method (Boolean)

Writes the text representation of the specified Boolean value, 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(
	bool value


Type: System::Boolean

The value to write.


An I/O error occurred.

The text representation of value is produced by calling the Boolean::ToString method.

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 generates ten random integers and uses the Console::WriteLine(Boolean) method to indicate whether they are even.

using namespace System;

void main()
   // Assign 10 random integers to an array.
   Random^ rnd = gcnew Random();
   array<Int32>^ numbers = gcnew array<Int32>(10); 
   for (int ctr = 0; ctr <= numbers->GetUpperBound(0); ctr++)
      numbers[ctr] = rnd->Next();

   // Determine whether the numbers are even or odd. 
   for each (Int32 number in numbers) {
      bool even = (number % 2 == 0);
      Console::WriteLine("Is {0} even:", number);

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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