如何在具有多个选项卡的文本框中打开文件? [英] How do I open a file into a textbox with multiple tabs?

问题描述

我正在 VB.NET 中创建一个文档编写程序，我可以创建多个选项卡.即使我无法声明我正在使用的文本框，我如何将文件打开到我打开的文本框中?链接以更好地理解这一点

I'm creating a document writing program in VB.NET, and I can create multiple tabs. How would I open a file into the textbox that I am open on, even though I can't declare what textbox I'm using? Link to understand this better

子代码:

Public Sub setText(Byval value As String)
  If tabPage1.Visible = True Then
    mainText.Text = value
  ElseIf tabPage2.Visible = True Then
    textBox1.Text = value
  End If
End Sub

提前致谢！

推荐答案

您需要使用与 getText 相同类型的想法

You need to use the same type of idea you did for the getText

Dim sub setText(value as string)
  Dim mytextbox As TextBox = TabControl1.SelectedTab.Controls.OfType(Of TextBox)().First()

  mytextbox.text = value
end sub 

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