使用Vb.Net在Windows窗体中将String声明为控件时获取null值

Question

我尝试使用此代码来声明一些字符串，该字符串将在我的应用程序表单中充当给定的控件。

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim Test12 As Control = Controls("Button1")
    Test12.Text = "Working"
End Sub

但是，我得到Test12的值是'NULL'，如下所示。我已确认我的表单包含控件名称为 Button1

Answer 1

史蒂夫是对的。 只需将此单词添加到您的代码行中，例如：

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim Test12 As Control = PanelName.Controls("Button1") 'Edited Line
Test12.Text = "Working"
End Sub

PanelName 是包含您的控件的面板的名称＆＃34; Button1＆＃34;