Pass values to existing open form

[vidhyapriya]

Hi all,

I am using two forms.From form1 button click i am opening form2,and i am passing values to form2 using delegate.when i click the button again form2 shouldn't open again but values should pass to already open form(form2) here i am added tab pages in tab control for every button click in one form.

how to do this...anyone help me...thnax in advance

 
Form1 Code:
 
Dim frm As Form
 
            For Each frm In My.Application.OpenForms
 
                Dim x1 As String = frm.ToString()
                Dim x2 As String = My.Forms.Form2.ToString()
                If x1 = x2 Then
 
                    MessageBox.Show("visible")
 
                    Exit Sub
                End If
            Next
 
            im = New Form2 
            im.Show()
            Dim MyGreeting As GreetingDelegate
            MyGreeting = New GreetingDelegate(AddressOf im.GoodMoring)
            MyGreeting.Invoke(Textbox1.Text, Textbox2.Text)
 
Form2 Code:
Public Sub GoodMoring(ByVal Fname As String, ByVal Username As String)
            _strfriendname = Fname
            _strUsername = Username
            Dim wbReceive As New WebBrowser
            Me.ctlTabPages.Add(New TabPages.TabPage(_strfriendname, wbReceive, "Created: " & DateTime.Now.ToLongTimeString()))
        End Sub