实例化类 [英] Instantiate Class

问题描述

早上好.

我有两个窗户. window1已经打开，我想使用window2作为window1的控件或功能.

但是，如果我将将Dim设置为新的Window1窗口"不起作用.

有人可以帮我吗?
示例:

Window1有一个TextBox和按钮

Good morning.

I''m have two windows. The window1 already open, and I want to use the window2 a control or function of window1.

But if I put "Dim as new Window1 Window" does not work.

Can someone help me?
Example:

Window1 have a TextBox and button

Partial Public Class Window1

Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click

Dim Win2 as new Window2
Win2.show

End Sub

End Class

Window2有一个按钮

Window2 have a Button

<pre lang="vb">
Partial Public Class Window2

Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click

Dim Win1 as new Window1
Win1.TextBox1.IsEnable = False ''It does not work

End Sub

End Class

推荐答案

在第一个函数中，您实例化Window2，然后结束该子例程，以使该子例程在变量超出范围时消失.您可能需要Win2变量作为Window1的属性，因此只要Window1确实存在，它就一直存在.

在第二个函数中，您将创建一个新的Window1类，并尝试修改属性，然后结束子例程，从而销毁该实例.第二个子例程需要访问在程序开始时创建的Window1对象.
花更多时间阅读有关类，对象和范围的信息.

In the first function you instantiate Window2 and then end the subroutine so it disappears as the variable goes out of scope. You probably need the Win2 variable to be a property of Window1 so it remains in existence as long as Window1 does.

In the second function you create a new Window1 class and try to modify a property, and then end the subroutine, thus destroying that instance. The second subroutine needs to access the Window1 object created at the start of the program.

Spend some more time reading up about classes, objects and scope.

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