如何在VB.NET中覆盖文本

Question

我曾经教过如何使用下面的代码附加文本文件,但是每次按下按钮1时我如何覆盖文件(没有人教过我)？

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim ALPHAVAL As String = "C:\ALPHAVAL.txt"

    If System.IO.File.Exists(ALPHAVAL) = True Then
        Dim objWriter As New System.IO.StreamWriter(ALPHAVAL, True)
        objWriter.WriteLine(TextBox1.Text)
        objWriter.Close()
    End If

结束课程

Answer 1

StreamWriter构造函数的签名是这样的:

public StreamWriter(string path,bool append  )

所以改变你的代码:

System.IO.StreamWriter(ALPHAVAL, True)

至 :

 System.IO.StreamWriter(ALPHAVAL, False)

这告诉StreamWriter覆盖文件.