Console.SetError(TextWriter) Metode

Definisi

Ruang nama:

System

Rakitan:

netstandard.dll, System.Console.dll

Sumber:

Console.cs

Error Mengatur properti ke objek yang ditentukanTextWriter.

public:
 static void SetError(System::IO::TextWriter ^ newError);

public static void SetError(System.IO.TextWriter newError);

static member SetError : System.IO.TextWriter -> unit

Public Shared Sub SetError (newError As TextWriter)

Parameter

newError

TextWriter

Aliran yang merupakan output kesalahan standar baru.

Pengecualian

ArgumentNullException

newError adalah null.

SecurityException

Pemanggil tidak memiliki izin yang diperlukan.

Contoh

Contoh berikut menunjukkan cara mengalihkan aliran kesalahan standar ke file.

using System;
using System.IO;
using System.Reflection;

public class RedirectStdErr
{
   public static void Main()
   {
      // Define file to receive error stream.
      DateTime appStart = DateTime.Now;
      string fn = @"c:\temp\errlog" + appStart.ToString("yyyyMMddHHmm") + ".log";
      TextWriter errStream = new StreamWriter(fn);
      string appName = typeof(RedirectStdErr).Assembly.Location;
      appName = appName.Substring(appName.LastIndexOf('\\') + 1);
      // Redirect standard error stream to file.
      Console.SetError(errStream);
      // Write file header.
      Console.Error.WriteLine("Error Log for Application {0}", appName);
      Console.Error.WriteLine();
      Console.Error.WriteLine("Application started at {0}.", appStart);
      Console.Error.WriteLine();
      //
      // Application code along with error output
      //
      // Close redirected error stream.
      Console.Error.Close();
   }
}

open System
open System.IO
open System.Reflection

[<EntryPoint>]
let main _ =
    // Define file to receive error stream.
    let appStart = DateTime.Now
    let fn = @"C:\temp\errlog" + appStart.ToString "yyyyMMddHHmm" + ".log"
    use fs = new FileStream(fn, FileMode.OpenOrCreate)
    let errStream = new StreamWriter(fs)
    let appName = 
        let appName = Assembly.GetExecutingAssembly().Location
        appName.Substring(appName.LastIndexOf('\\') + 1)

    // Redirect standard error stream to file.
    Console.SetError errStream

    // Write file header.
    Console.Error.WriteLine $"Error Log for Application {appName}"
    Console.Error.WriteLine()
    Console.Error.WriteLine $"Application started at {appStart}."
    Console.Error.WriteLine()
    //
    // Application code along with error output
    //
    // Close redirected error stream.
    Console.Error.Close()
    
    0

Imports System.IO
Imports System.Reflection

Module RedirectStdErr
   Public Sub Main()
      ' Define file to receive error stream.
      Dim appStart As Date = Date.Now
      Dim fn As String = "c:\temp\errlog" & appStart.ToString("yyyyMMddHHmm") & ".log"
      Dim errStream As New StreamWriter(fn)
      Dim appName As String = GetType(RedirectStdErr).Assembly.Location
      appName = Mid(appName, InStrRev(appName, "\") + 1)
      ' Redirect standard error stream to file.
      Console.SetError(errStream)
      ' Write file header.
      Console.Error.WriteLine("Error Log for Application {0}", appName)
      Console.Error.WriteLine()
      Console.Error.WriteLine("Application started at {0}.", appStart)
      Console.Error.WriteLine()
      '
      ' Application code along with error output 
      '
      ' Close redirected error stream.
      Console.Error.Close()
   End Sub
End Module

Keterangan

Secara default, Error properti diatur ke aliran output kesalahan standar.

StreamWriter Yang merangkum FileStream dapat digunakan untuk mengirim pesan kesalahan ke file.

Lihat juga

• IsErrorRedirected
• Error