How to add textboxes, labels and buttons dynamically at runtime in VB?

Question

How to create a form with a button add_subjects which adds one textbox and a corresponding label on each click,3 buttons - Add, Edit and Dele

Answer 1

A control like a textbox is just an object of the class Textbox. In order for the form to display this object it needs to be added to the form's Controls property. To create a new textbox all you need to do is

Dim newTB as New Textbox
newTB.Name = "tbNew"
'Set location, size and so on if you like
Me.Controls.Add(newTB)

If you want your control to be able to respond to events you need to add an event handler for the event you want to the control. This handler refers the event to a method of your choice.

Public Class Form1

  Sub CreateTB
    Dim NewTB as New Textbox
    newTB = New Textbox
    newTB.Name = "tbNew"
    AddHandler newTB.TextChanged, AddressOf HandleTextChanged
    Me.Controls.Add(newTB)
  End Sub


  Private Sub HandleTextChanged(sender as Object, e as EventArgs)
    'Handle the event
  End Sub
End Class

You should make sure that the names are unique if you are creating the controls or you might run into trouble.

You can also store your created controls in an array or list as a global variable. That way you can easily access them afterwards.