FileInfo.CreateText Metod

Definition

Namnområde:
System.IO
Sammansättningar:
mscorlib.dll, System.IO.FileSystem.dll
Sammansättning:
mscorlib.dll
Sammansättning:
System.IO.FileSystem.dll
Sammansättning:
netstandard.dll

Skapar en StreamWriter som skriver en ny textfil.

public:
 System::IO::StreamWriter ^ CreateText();
public System.IO.StreamWriter CreateText();
member this.CreateText : unit -> System.IO.StreamWriter
Public Function CreateText () As StreamWriter

Returer

StreamWriter

En ny StreamWriter.

Undantag

UnauthorizedAccessException

Filnamnet är en katalog.

IOException

Disken är skrivskyddad.

SecurityException

Anroparen har inte den behörighet som krävs.

Exempel

I följande exempel visas CreateText metoden.

using System;
using System.IO;

class Test
{

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

        if (!fi.Exists)
        {
            //Create a file to write to.
            using (StreamWriter sw = fi.CreateText())
            {
                sw.WriteLine("Hello");
                sw.WriteLine("And");
                sw.WriteLine("Welcome");
            }
        }

        //Open the file to read from.
        using (StreamReader sr = fi.OpenText())
        {
            string s = "";
            while ((s = sr.ReadLine()) != null)
            {
                Console.WriteLine(s);
            }
        }
    }
}
//This code produces output similar to the following;
//results may vary based on the computer/file structure/etc.:
//
//Hello
//And
//Welcome

Imports System.IO
Imports System.Text

Public Class Test

    Public Shared Sub Main()
        Dim path As String = "c:\MyTest.txt"
        Dim fi As FileInfo = New FileInfo(path)

        If fi.Exists = False Then
            'Create a file to write to.
            Dim sw As StreamWriter = fi.CreateText()
            sw.WriteLine("Hello")
            sw.WriteLine("And")
            sw.WriteLine("Welcome")
            sw.Flush()
            sw.Close()
        End If

        'Open the file to read from.
        Dim sr As StreamReader = fi.OpenText()

        Do While sr.Peek() >= 0
            Console.WriteLine(sr.ReadLine())
        Loop
        sr.Close()
    End Sub
End Class
'This code produces output similar to the following; 
'results may vary based on the computer/file structure/etc.:
'
'Hello
'And
'Welcome

Kommentarer

Som standard beviljas fullständig läs-/skrivåtkomst till nya filer till alla användare.

Gäller för

Se även