Question

我已经使用了以下代码。

 Dim openfile1 = New Microsoft.Win32.OpenFileDialog With {.Filter = "Text (*.Text)|*.txt"}
        If (openfile1.ShowDialog() = System.Windows.Forms.DialogResult.OK) Then
            For Each line As String In File.ReadAllLines(openfile1.FileName)
                ListBox1.Items.Add(line)
            Next
        End If

此代码在Windows窗体上提供，当我在WPF中使用时没有错误但无法在列表框中显示记事本的内容。没有其他解决方案

Answer 1

File.IO.ReadAllLines将返回一个字符串数组，而不是collection。您最好使用For循环。

  Dim openfile1 = New Microsoft.Win32.OpenFileDialog With {.Filter = "Text (*.Text)|*.txt"}
            If (openfile1.ShowDialog() = System.Windows.Forms.DialogResult.OK) Then
                For i = 0 To Ubound(File.ReadAllLines(openfile1.FileName),1)
                    ListBox1.Items.Add(File.ReadAllLines(openfile1.FileName)(i))
                Next
            End If

Foreach statement =您需要一个collection对象

WPF VB.NET：如何在列表框中插入记事本

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