data interaction between 2 forms

[Martijn van Dru]

Hello all

 

I have the following problem. How can 2 forms interact wich eachother?

Public Class Form1
   Inherits System.Windows.Forms.Form

   Public myForm2 As New Form2()
   Public nData As Integer

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       myForm2.Show()
   End Sub

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
       TextBox1.Text = nData
   End Sub
End Class

Public Class Form2
   Inherits System.Windows.Forms.Form

   Public nData As Integer
   Public myForm1 As New Form1()

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       myForm1.nData = TextBox2.Text
   End Sub

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
       Me.Close()
   End Sub
End Class

 

In Form1 I create an instance of Form2. In Form2 I fill in an integer in textbox2 (nData). Now is my problem that I want that number nData in textbox1 on Form1, but I don't know how to do it. I don't wanna make a new instance of Form1, because then I have 2 different instances of Form1. Does somebody know in wich direction I have to search for my (simple?) problem?

thank you

[PlausiblyDamp]

http://www.xtremedotnettalk.com/showthread.php?s=&threadid=75079&highlight=form1+form2

 

http://www.xtremedotnettalk.com/showthread.php?s=&threadid=75526&highlight=form1+form2

[dynamic_sysop]

try this...

Public Class Form1
   Inherits System.Windows.Forms.Form

   Public myForm2 As New Form2()
   Public nData As Integer

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       '///
       Me.AddOwnedForm(myForm2) '/// add this line in form1
       '///
       myForm2.Show()
   End Sub

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
       TextBox1.Text = nData
   End Sub
End Class

Public Class Form2
   Inherits System.Windows.Forms.Form

   Public nData As Integer
   Public myForm1 As Form1

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       '///
       myForm1 = Me.Owner '/// add this in Form2.
       '/////
       myForm1.nData = TextBox2.Text
   End Sub

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
       Me.Close()
   End Sub
End Class

[dynamic_sysop]

you beat me to it PlausiblyDamp

;)

[mutant]

You could also setup a class with shared members so you wouldnt have to use the Owner property and you would not have a problem accessing the form instances from anywhere in the program.

[Martijn van Dru]

Perfect that works, thanks for help