Getting Data from a form into a class?

Kevin Davis

Hello All,

I'm new to this whole "classes" tier of the three tier data model, so please be kind:).
I have a .dll -- I want to place data into classes from textboxes on a form that then gets placed into a form in my .dll from those created classes:

1) I have no idea of any of the info from the form that I would receive the info from

Better yet: For example;

I have a form that has a textbox (txtPhone) that contains a phone number in it , I would like to get that data from the texbox into a class in my .dll, and then place it in a textbox (txtphone) that I have on a form inside my .dll

Sorry, if it's confusing......imagine what I think... Any help on how to go about this would be VERY much appreciated...thanks. Zcast

4 Replies

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Kevin Davis15y ago
Yep, that worked. I simply forgot to comment out that line that you didn't know what it did. It was REPLACING the form. Works perfectly now. Thank you VERY much for your help and the lesson in classes, I learned alot.
Vulpes15y ago
I'M not sure what this line is doing:

SMS.sms.ShowSendForm()

but to show the frmSend with the textbox populated, try:

form.Show()
Kevin Davis15y ago
This is my class code:

Public Class phone

Public m_Phone As String

Public Property Phone As String
     Get
        Return m_Phone
     End Get
     Set(ByVal value As String)
      m_Phone = value
    End Set
End Property
End Class

This is the code in the .exe form (not in the .dll):

Private Sub btnSendMessage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSendMessage.Click
Dim mc As New phone
mc.m_Phone = Me.txtPhone.Text

If txtPhone.Text = "" Then
MsgBox("Please enter a phone number to text.", MsgBoxStyle.Exclamation, AcceptButton)
Else
     Dim form As New frmSend
      SMS.sms.ShowSendForm()
      form.txtPhone.Text = mc.m_Phone
End If
End Sub

BUT.....the txtphone textbox on the form in my .dll (frmsend), still does not populate with the number from the from in the .exe. The code looks correct to me, but not working........bot txtPhone textboxes (the .exe one, and the .dll one are both set to public.
Vulpes15y ago
Well, the first thing that you'll need to do is to create an instance of the class in the dll. If the class is in a namespace, I'd first import the namespace into your exe project:

Imports MyNamespace

You can then do the following from within a Button_Click handler or wherever else you want to do it:

Dim mc As New MyClass()

Suppose now that MyClass has a public property called Phone which is of type String. You can then populate this property with the contents of txtPhone as follows:

mc.Phone = txtPhone.Text

You then need to create an instance of the form in the dll:

Dim myForm As New DllForm()

and populate its textbox, txtphone. If txtphone is Private (the default for controls on forms), you can do it like this:

myForm.Controls("txtphone").Text = mc.Phone

Otherwise, you could change the accessibility of txtphone to Public (or Friend) and do it like this:

myForm.txtphone.Text = mc.Phone

And basically that's all there is to it for any other textboxes you may have.