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我有一个包含大量文本框的应用程序,基本上是要填写的表格。一个标签控件中有几个标签页。在保存数据时,我只需遍历文本框,获取它们的名称和文本,然后将其放入带有“|”的文本文件中 作为分隔符。这很好用,我可以看到我所有的文本框和文本文件中的数据。现在问题来了。当我读回文件(将保存的数据加载回表单)时,它会遍历控件名称并将文本更改为文件中的任何内容。它适用于表单上的文本框,但是当它到达标签页上的第一个文本框时会失败。我该如何解决?如果有更好的方法来保存数据,我会全力以赴。

这是写入文件的代码:

    Private Sub savefile(file As String)
    Dim ctl As Control = Me
    Dim sw As System.IO.StreamWriter
    sw = My.Computer.FileSystem.OpenTextFileWriter(file, False)
    Do
        ctl = Me.GetNextControl(ctl, True)
        If ctl IsNot Nothing Then
            If TypeOf ctl Is TextBox Then
                sw.WriteLine(ctl.Name.ToString.Substring(3) & "|" & ctl.Text)
            End If
        End If
    Loop Until ctl Is Nothing
    sw.Close()
End Sub

这是读取文件并更新文本框的代码:

    Private Sub ReadFile(filename)
    Dim strfilename As String = filename
    Dim num_rows, x, y As Integer
    Dim strarray(1, 1) As String
    Dim ctrl As Control = Me

    'Check if file exist
    If File.Exists(strfilename) Then
        Dim tmpstream As StreamReader = File.OpenText(strfilename)
        Dim strrecords() As String
        Dim strfields() As String

        'Load content of file to strLines array
        strrecords = tmpstream.ReadToEnd().Split(vbCrLf)

        ' Redimension the array.
        num_rows = UBound(strrecords)
        ReDim strarray(num_rows, 2)

        ' Copy the data into the array.
        For x = 0 To num_rows - 1
            strfields = strrecords(x).Split("|")
            For y = 0 To 1
                strarray(x, y) = strfields(y)
            Next
        Next

        ' Display the data in listbox
        For x = 0 To num_rows - 1
            Dim tbxname As String = strarray(x, 0)
            tbxname = Remove(tbxname) 'routine that removes invisible characters
            tbxname = "tbx" & tbxname
            MsgBox(tbxname) 'used to verify each file and which one fails
            Me.Controls(tbxname).Text = strarray(x, 1)
        Next
    Else : MsgBox("File doesn't exist!")
    End If

End Sub

我希望这是足够的信息。提前感谢您的帮助!!

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1 回答 1

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我认为该行Me.Controls(tbxname).text = strarray(x,1)没有在选项卡控件中处理您的文本框,您可能需要了解如何在选项卡页中处理您的文本框。

就像是

Me.TabControl1.TabPages(0).Controls(tbxname).text = starray(x,1)
于 2012-06-29T00:05:22.923 回答