是否需要倒带ReadAllLines文件? [英] Need to rewind file for ReadAllLines ?

问题描述

当调用列表框时，将执行以下例程.它会检查文本文件是否存在，如果存在，则从文件中读取每一行并将其添加到列表框中.

The following routine executes when a listbox is called.  It checks if a text file exists, and if it does, then it reads each line from the file and adds them to the listbox.

我遇到的问题是，如果我第二次打开列表框，则没有从文件中读取任何行.

The problem I'm having is if I open the listbox a second time, no lines are being read from the file. 

这是因为文件位置在文件末尾吗?如果是，该如何倒带?

Is this because the file position is end-of-file?  If so, how can I rewind it?

公共类Dialog_ListLoads
  私有子对话框Dialog_ListLoads_Load(发送为System.Object，发送为System.EventArgs)处理MyBase.Load
    暗淡的lines()作为字符串
    昏暗的fname作为字符串

Public Class Dialog_ListLoads
   Private Sub Dialog_ListLoads_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
      Dim lines() As String
      Dim fname As String

     ListBox1.Items.Clear()
     fname = ShaftAnalysis_Home& " \ 57_Load_List.txt"

      ListBox1.Items.Clear()
      fname = ShaftAnalysis_Home & "\57_Load_List.txt"

    如果System.IO.File.Exists(fname)= True，那么
       行数= File.ReadAllLines(fname)

      If System.IO.File.Exists(fname) = True Then
         lines = File.ReadAllLines(fname)

       对于i As Integer = 0到lines.Count-1
           ListBox1.Items.Add(lines(i))
       下一个
    如果结束
  结束子
结束班

         For i As Integer = 0 To lines.Count - 1
            ListBox1.Items.Add(lines(i))
         Next
      End If
   End Sub
End Class

迈克

推荐答案

迈克，你好

我认为与Visual Basic Windows窗体的静态行为有关.

I assume that it is more to do with the static behaviour of a Visual Basic Windows Forms.

那么更重要的是，您如何称呼该表格，然后可能有很多原因，您可以向我们展示一下吗?

More important is then how you call that form and then there can be many reasons, can you show that to us.

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