vb System.IO.File.AppendText类(方法)实例源码

' 导入命名空间
Imports System.IO

Public Class Test
  Public Shared Sub Main()
    Dim path As String = "c:\temp\MyTest.txt"

    ' This text is added only once to the file. 
    If Not File.Exists(path) Then
      ' Create a file to write to.
      Using sw As StreamWriter = File.CreateText(path)
        sw.WriteLine("Hello")
        sw.WriteLine("And")
        sw.WriteLine("Welcome")
      End Using
    End If

    ' This text is always added, making the file longer over time 
    ' if it is not deleted.
    Using sw As StreamWriter = File.AppendText(path)
      sw.WriteLine("This")
      sw.WriteLine("is Extra")
      sw.WriteLine("Text")
    End Using

    ' Open the file to read from. 
    Using sr As StreamReader = File.OpenText(path)
      Do While sr.Peek() >= 0
        Console.WriteLine(sr.ReadLine())
      Loop
    End Using

  End Sub
End Class

' 导入命名空间
Imports System.IO


Public Class Tester
    Public Shared Sub Main
        Dim w As StreamWriter
        w = File.AppendText("test.txt")

        w.Write("it is writing data")
        w.WriteLine(1)
        w.WriteLine("writeline")
        w.WriteLine("True")
        w.Close()
    End Sub

End Class