Console.WriteLine Method (Char)

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

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

'Declaration
<HostProtectionAttribute(SecurityAction.LinkDemand, UI := True)> _
Public Shared Sub WriteLine ( _
	value As Char _
)

Parameters

value
Type: System.Char

The value to write.

ExceptionCondition
IOException

An I/O error occurred.

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

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 following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.

Public Class TipCalculator
   Private Const tipRate As Double = 0.18

   Public Shared Sub Main()
      System.Environment.ExitCode = Calculator(System.Environment.GetCommandLineArgs())
   End Sub 

   Public Shared Function Calculator(args() As String) As Integer 
      Dim billTotal As Double 
      If args.Length < 2 Then
         Console.WriteLine("usage: TIPCALC total")
         Return 1
      Else 
         If Not Double.TryParse(args(1), billTotal) Then
            Console.WriteLine("usage: TIPCALC total")
            Return 1
         End If 

         Dim tip As Double = billTotal * tipRate
         Console.WriteLine()
         Console.WriteLine("Bill total:{1}{0,8:c}", billTotal, vbTab)
         Console.WriteLine("Tip total/rate:{2}{0,8:c} ({1:p1})", tip, tipRate, vbTab)
         Console.WriteLine("".PadRight(24, "-"c))
         Console.WriteLine("Grand total:{1}{0,8:c}", billTotal + tip, vbTab)
         Return 0
      End If 
   End Function  
End Class  

'Example Output: 
'--------------- 
' >tipcalc 52.23 
'  
' Bill total:       $52.23 
' Tip total/rate:    $9.40 (18.0 %) 
' ------------------------ 
' Grand total:      $61.63

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

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

Windows Phone 8.1, Windows Phone 8, 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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