Newbie: Global Form Declaration 1

[HerbAndEdnaWeinstein]

Hi, I've got a Form that needs to be accessed from various functions and subs in my program. (The program itself runs as an add-in to a larger app.)

So, I designed the form in the designer, named it "Form_Main", and I access it in my class declaration like this:

***************************************************
Private m_pForm_Main As New Form_Main
***************************************************

Then, from within my OnClick() sub, I invoke it like this:

***************************************************
m_pForm_Main.Show()
***************************************************

But, there's a problem. The Form works great the first time I click the start button and the Form opens. The second time I click the start button, however, the program returns an error when it attempts to open the form.

Thanks in advance, I have a feeling it's not too tough!!!
Herbie

 

[RiverGuy]

A.

Private m_pForm_Main as Form_Main

B.

Try
     m_pForm_Main.Show()
Catch ex1 As System.ObjectDisposedException
     m_pForm_Main = Form_Main()
     m_pForm_Main.Show()
Catch ex2 As System.NullReferenceException
     m_pForm_Main = New Form_Main()
     m_pForm_Main.Show()
End Try

 

[HerbAndEdnaWeinstein]

Right on the nose!

One more question, though (I think I can give 2 points on the same question):

I am able to update text boxes, combo boxes, and the like on the form with code like this:

*********************************************************
Form_Main.TextBox1.Text = "Here's Some Text"
*********************************************************

However, I can't figure out how to track button presses and the like, from my other class.

Thanks Again!
Herbie