Export (0) Print
Expand All

Console.Error Property

Gets the standard error output stream.

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

'Declaration
Public Shared ReadOnly Property Error As TextWriter

Property Value

Type: System.IO.TextWriter
A TextWriter that represents the standard error output stream.

This property is set to the standard error stream by default. This property can be set to another stream with the SetError method.

The following code example illustrates the use of the Error property.


Imports System.IO

Public Class ExpandTabs
   Private Const tabSize As Integer = 4
   Private Const usageText As String = "Usage: EXPANDTABSEX inputfile.txt outputfile.txt"

   Public Shared Function Main(args() As String) As Integer
      Dim writer As StreamWriter = Nothing
      Dim standardOutput As TextWriter = Console.Out

      If args.Length < 2 Then
         Console.WriteLine(usageText)
         Return 1
      End If

      Try
         writer = New StreamWriter(args(1))
         Console.SetOut(writer)
         Console.SetIn(New StreamReader(args(0)))
      Catch e As IOException
         Dim errorWriter As TextWriter = Console.Error
         errorWriter.WriteLine(e.Message)
         errorWriter.WriteLine(usageText)
         Return 1
      End Try
      Dim i As Integer
      i = Console.Read()
      While i <> -1 
         Dim c As Char = Convert.ToChar(i)
         If c = ControlChars.Tab Then
            Console.Write("".PadRight(tabSize, " "c))
         Else
            Console.Write(c)
         End If
         i = Console.Read()
      End While
      writer.Close()
      ' Recover the standard output stream so that a 
      ' completion message can be displayed.
      Console.SetOut(standardOutput)
      Console.WriteLine("EXPANDTABSEX has completed the processing of {0}.", args(0))
      Return 0
   End Function 'Main
End Class 'ExpandTabs


.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

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.

Community Additions

ADD
Show:
© 2014 Microsoft