VB.NET使用sub打开表单的新实例 [英] VB.NET Open new instance of a form using a sub

问题描述

有没有办法通过子/函数打开表单的新实例？

如果我指定表单我可以这样做，我遇到的问题是将表单传递给sub ...



我正在努力做一些事情......

Is there a way to open a new instance of a form via a sub/function?
I can do it if I specify the form, problem I'm having is passing the form to a sub...

I'm Trying to do something to the effect of...

' This works if I specify the form
Dim NewInstance as New frmTest
NewInstance.Show

' I've tried a dozen ways to get this to work and nadda

   OpenNewInstanceOfForm(frmTest)

Sub OpenNewInstanceOfForm(F as form)
  Dim NewInstance as New F
  NewInstance.Show
End sub

每当我尝试使用F时，它都表示未定义



任何人？



谢谢！

Every time I try to use F, it says it's undefined

Anyone?

Thanks!

推荐答案

Dim NewInstance as New F 会产生问题，因为F不是一个类，而是一个指向实例的变量。

尝试将新的实例作为新的frmTest

Dim NewInstance as New F will create a problem since F is not a class but rather a variable pointing to an instance.
Try Dim NewInstance as New frmTest

Pass典型将该方法的形式作为参数，然后使用Activator.CreateInstance创建该类型的示例。将其转换为Form，然后调用Show。

或者，传递表单类的名称，并使用字符串版本的Activator.CreateInstance来创建它。

https://msdn.microsoft.com/en-us/library/ d133hta4（v = vs.110）.aspx [ ^ ]

Pass the Type of the form to the method as a parameter, then use Activator.CreateInstance to create an example of the type. Cast that to a Form, and call Show on that.
Alternatively, pass the name of the form class, and use the string version of Activator.CreateInstance to create it.
https://msdn.microsoft.com/en-us/library/d133hta4(v=vs.110).aspx[^]

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