Console.Error プロパティ

.NET Framework クラス ライブラリ リファレンス

Console.Error プロパティ

標準エラー出力ストリームを取得します。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Shared ReadOnly Property
 Error As TextWriter

Visual Basic (使用法)

Dim value As TextWriter

value = Console.Error

C#

public static TextWriter Error { get;
 }

C++

public:
static property TextWriter^ Error {
    TextWriter^ get ();
}

J#

/** @property */
public static TextWriter get_Error ()

JScript

public static function get
 Error () : TextWriter

プロパティ値
標準エラー出力ストリームを表す TextWriter オブジェクト。

解説

既定では、このプロパティは標準エラー ストリームに設定されます。このプロパティは、SetError メソッドで別のストリームに設定できます。

使用例

Error プロパティの使用方法については、次のコード例を参照してください。

Visual Basic

Public Class ExpandTabs
   Private Const tabSize As
 Integer = 4
   Private Const usageText As
 String = "Usage: EXPANDTABSEX inputfile.txt
 outputfile.txt"
   
   'Entry point which delegates to C-style main Private Function
   Public Overloads Shared
 Sub Main()
      System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs())
   End Sub
   
   Overloads Public Shared
 Function Main(args() As String)
 As Integer
      Dim writer As StreamWriter = Nothing
      Dim standardOutput As TextWriter = Console.Out
      
      If args.Length < 3 Then
         Console.WriteLine(usageText)
         Return 1
      End If
      
      Try
         writer = New StreamWriter(args(2))
         Console.SetOut(writer)
         Console.SetIn(New StreamReader(args(1)))
      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

C#

public class ExpandTabs {
    private const int tabSize
 = 4;
    private const string
 usageText = "Usage: EXPANDTABSEX inputfile.txt outputfile.txt";
    public static int Main(string[]
 args) {
        StreamWriter writer = null;
        TextWriter standardOutput = Console.Out;

        if (args.Length < 2) {
            Console.WriteLine(usageText);
            return 1;
        }

        try {
            writer = new StreamWriter(args[1]);
            Console.SetOut(writer);
            Console.SetIn(new StreamReader(args[0]));
        }
        catch(IOException e) {
            TextWriter errorWriter = Console.Error;
            errorWriter.WriteLine(e.Message);
            errorWriter.WriteLine(usageText);
            return 1;            
        }
        int i;
        while ((i = Console.Read()) != -1) {
            char c = (char)i;
            if (c == '\t')
                Console.Write(("").PadRight(tabSize, ' '));
            else
                Console.Write(c);
        }
        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;
    }
}

C++

int main()
{
   const int tabSize = 4;
   array<String^>^args = Environment::GetCommandLineArgs();
   String^ usageText = "Usage: EXPANDTABSEX inputfile.txt outputfile.txt";
   StreamWriter^ writer = nullptr;
   TextWriter^ standardOutput = Console::Out;
   if ( args->Length < 3 )
   {
      Console::WriteLine( usageText );
      return 1;
   }

   try
   {
      writer = gcnew StreamWriter( args[ 2 ] );
      Console::SetOut( writer );
      Console::SetIn( gcnew StreamReader( args[ 1 ] ) );
   }
   catch ( IOException^ e ) 
   {
      TextWriter^ errorWriter = Console::Error;
      errorWriter->WriteLine( e->Message );
      errorWriter->WriteLine( usageText );
      return 1;
   }

   int i;
   while ( (i = Console::Read()) != -1 )
   {
      Char c = (Char)i;
      if ( c == '\t' )
            Console::Write( ((String^)"")->PadRight( tabSize, ' ' )
 );
      else
            Console::Write( c );
   }

   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;
}

J#

public class ExpandTabs
{
    private static int tabSize
 = 4;
    private static String usageText =
        "Usage: EXPANDTABSEX inputfile.txt outputfile.txt";
    public static void main(String[]
 args)
    {
        StreamWriter writer = null;
        TextWriter standardOutput = Console.get_Out();
        if (args.length < 2) {
            Console.WriteLine(usageText);
            return;
        }
        try {
            writer = new StreamWriter(args[1]);
            Console.SetOut(writer);
            Console.SetIn(new StreamReader(args[0]));
        }
        catch (IOException e) {
            TextWriter errorWriter = Console.get_Error();
            errorWriter.WriteLine(e.get_Message());
            errorWriter.WriteLine(usageText);
            return;
        }
        int i;
        while (((i = Console.Read()) != -1)) {
            char c = (char)(i);
            if (c == '\t') {
                Console.Write("".PadRight(tabSize, ' '));
            }
            else {
                Console.Write(c);
            }
        }
        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;
    } //main
} //ExpandTabs

JScript

public class ExpandTabs {
    private static var tabSize
 : int = 4;
    private static var usageText
 : String  = "Usage: EXPANDTABSEX inputfile.txt outputfile.txt";
    public static function
 Main(args : String[]) : int {
        var writer : StreamWriter = null;
        var standardOutput : TextWriter = Console.Out;

        if (args.Length < 2) {
            Console.WriteLine(usageText);
            return 1;
        }

        try {
            writer = new StreamWriter(args[1]);
            Console.SetOut(writer);
            Console.SetIn(new StreamReader(args[0]));
        }
        catch(e : IOException) {
            var errorWriter : TextWriter = Console.Error;
            errorWriter.WriteLine(e.Message);
            errorWriter.WriteLine(usageText);
            return 1;            
        }
        var i : int;
        while ((i = Console.Read()) != -1) {
            var c : char = char(i);
            if (c == '\t')
                Console.Write(("").PadRight(tabSize, ' '));
            else
                Console.Write(c);
        }
        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;
    }
}

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
Console クラス
Console メンバ
System 名前空間
In
Out
SetError