Access another form's objects

[Chong]

Is there a way I can access another form's objects or instances without passing them through a function or sub routien? Here's my situation.

I have a frmMain form that contains all my objects: buttons, panels, text boxes, datagrid, dataset and dataadapter etc.. Then I added a another class component, clsEvent, to my project. In this class, I want to be able to access all those objects in the frmMain form without passing them through a public shared sub. Is there a way? If there is way, mind give me a hand on this issue?

Any help is greatly appreciated!

ljCharlie

[Edneeis]

You should pass the current instance of frmMain to clsEvent, preferably in the constructor.

[Chong]

Many thanks for your help. But how do I do that?

ljCharlie

[Edneeis]

'in clsEvent
'store a local reference to a frmMain type
Private _frm As frmMain
 
'make constructor for passing it in
Public Sub New(form as frmMain)
  'assign instance to local reference
  _frm=form
  'now you can refer to anything on frmMain by using _frm inside the class
End Sub
 
'example
Public Sub ShowText()
  Msgbox(_frm.TextBox1.Text)
End Sub
 
'in frmMain when creating clsEvent
Dim ce As New clsEvent(Me)

[Chong]

Again, many thanks for the help.

Where in frmMain do I put this line: Dim ce As New clsEvent(Me)

And what is it for?

ljCharlie

[Edneeis]

That should be wherever you are creating the clsEvent object, which I guess doesn't have to be in frmMain but if its not then use the current instance of frmMain instead of ME in the constructor.

[Chong]

Thanks! Any variable or instance I declared as Private in the frmMain can not be accessed through this constructor, correct? Another words in frmMain I declared:

Private tableStyle1 As New DataGridTableSytle()

Can not be accessed in clsEvent as _frm.tableStyle1 right?

ljCharlie

[Edneeis]

That is correct since it has private scope then it can't be accessed outside of the form.

[Chong]

That is it! Thank you very much for the time you spent helping me.

ljCharlie

[Chong]

Sorry to bother you again, but I encounter a problem. In the clsEvent class, it seemed that I have to declared my routine as Private Sub and not Private Shared Sub for the constructor to work. So the question is, how do I call the sub routine in the frmMain form since it is not Shared?

ljCharlie

[Chong]

I think I got it.

ljCharlie