StreamReader.CurrentEncoding Propriété

Définition

Espace de noms:
System.IO
Assemblys:
mscorlib.dll, System.IO.dll
Assembly:
mscorlib.dll
Assembly:
System.IO.dll
Assembly:
netstandard.dll

Obtient l’encodage de caractères actuel utilisé par l’objet actuel StreamReader .

public:
 virtual property System::Text::Encoding ^ CurrentEncoding { System::Text::Encoding ^ get(); };
public virtual System.Text.Encoding CurrentEncoding { get; }
member this.CurrentEncoding : System.Text.Encoding
Public Overridable ReadOnly Property CurrentEncoding As Encoding

Valeur de propriété

Encoding

Encodage de caractères actuel utilisé par le lecteur actuel. La valeur peut être différente après le premier appel à n’importe quelle Read méthode de StreamReader, car l’encodage de l’autodetection n’est pas effectué tant que le premier appel à une Read méthode n’est pas effectué.

Exemples

L’exemple de code suivant obtient l’encodage de l’objet spécifié StreamReader .

using System;
using System.IO;
using System.Text;

class Test
{
    
    public static void Main()
    {
        string path = @"c:\temp\MyTest.txt";

        try
        {
            if (File.Exists(path))
            {
                File.Delete(path);
            }

            //Use an encoding other than the default (UTF8).
            using (StreamWriter sw = new StreamWriter(path, false, new UnicodeEncoding()))
            {
                sw.WriteLine("This");
                sw.WriteLine("is some text");
                sw.WriteLine("to test");
                sw.WriteLine("Reading");
            }

            using (StreamReader sr = new StreamReader(path, true))
            {
                while (sr.Peek() >= 0)
                {
                    Console.Write((char)sr.Read());
                }

                //Test for the encoding after reading, or at least
                //after the first read.
                Console.WriteLine("The encoding used was {0}.", sr.CurrentEncoding);
                Console.WriteLine();
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    }
}

Imports System.IO
Imports System.Text

Public Class Test

    Public Shared Sub Main()
        Dim path As String = "c:\temp\MyTest.txt"
        Try
            If File.Exists(path) Then
                File.Delete(path)
            End If

            'Use an encoding other than the default (UTF8).
            Dim sw As StreamWriter = New StreamWriter(path, False, New UnicodeEncoding())
            sw.WriteLine("This")
            sw.WriteLine("is some text")
            sw.WriteLine("to test")
            sw.WriteLine("Reading")
            sw.Close()

            Dim sr As StreamReader = New StreamReader(path, True)

            Do While sr.Peek() >= 0
                Console.Write(Convert.ToChar(sr.Read()))
            Loop

            'Test for the encoding after reading, or at least
            'after the first read.
            Console.WriteLine("The encoding used was {0}.", sr.CurrentEncoding)
            Console.WriteLine()

            sr.Close()
        Catch e As Exception
            Console.WriteLine("The process failed: {0}", e.ToString())
        End Try
    End Sub
End Class

Remarques

Pour obtenir la liste des tâches d’E/S courantes, consultez Tâches d’E/S courantes.

S’applique à

Voir aussi