Values is not appearing in Current active Form - vb.net

Question

Using VB.Net (Windows Application)
I have one main form(Data entry form), i creating many form at run time.
Code for creating a multiple form at run time.
Button1 click
If IsNothing(frm) OrElse frm.IsDisposed Then
newfrm = New frmEntry
End If
newfrm.Show()
I have popup windows for selcting the value in the Data entry form.
Code for selcting the value from popup windows
Popup Window code
If e.KeyCode = Keys.Enter Then
frmEntry.txtbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
End If
The above popup window code is working for Data Entry Form, but it is not working for new forms (at run time)
When i select the value from popup windows means, it is appearing in frmentry textbox, not in newfrm textbox.
Popup windows selected value should appear in current active form.
What wrong in my code.
Need VB.Net Code Help

Answer 1

If the form you open the popup from is what you need to change values in, have you considered passing a reference to the opening form to the popup when you open it? So that you have direct access to the form that has the controls that will need updated?
This constructor in the popup window:
Private mOpeningForm As frmEntry
Public Sub New(OpeningForm As frmEntry)
InitializeComponent()
mOpeningForm = OpeningForm
End Sub
This modified to use the reference to the form sent to the popup form:
If e.KeyCode = Keys.Enter Then
mOpeningForm.txtbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
End If
This in the form when the window is being created at runTime:
If IsNothing(mEntryForm) OrElse mEntryForm.IsDisposed Then
mEntryForm= New frmEntry(me)
End If
mEntryForm.Show()
At the top level of the Data Form Class (The one creating the popups)
private mEntryForm as frmEntry
That will allow you to have a reference to the Instance of frmEntry from anywhere in the data form class. (Note that I changed the name of the popup form instance in for the button click event code too)