VB.NET Open new instance of a form using a sub

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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

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

Anyone?

Thanks!

Posted 13-Nov-15 5:10am

bayotle

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Abhinav S · Answer 1 · 2015-11-13T05:25:00

Solution 1

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

Posted 13-Nov-15 5:25am

Abhinav S

Comments

bayotle 13-Nov-15 12:15pm

Thanks for the response Abhinav but the same results as before, that and I can't specify the name of the form in the sub, it would need to be passed since it can be one of a 'many'.

What I'm trying to do essentially is pass a form to a sub in a module so that I can open a new copy of it. This is meant to be generic code used in a template so the form name wont actually be known.

OriginalGriff · Answer 2 · 2015-11-13T05:28:00

Solution 2

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[^]

Posted 13-Nov-15 5:28am

OriginalGriff

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bayotle 13-Nov-15 12:18pm

Thanks for the quick reply but as of right now, that's slightly over my level of expertise!
I'll have to ponder that for a few, thanks for the link!

OriginalGriff 13-Nov-15 12:41pm

You're welcome!