Hello,

I have a set of textboxes and labels, created by

Dim txtSign as TextBox
dim lblSign as Label

Do
    txtSign = New Textbox
    lblSign = New Label
Loop until ...

AddHandler txtSign.TextChanged, AddressOf  Sign_TextboxChanged

In the Private Sub  Sign_TextboxChanged, I want to determine in which
TextBox the Change took place, so it can affect the corresponding Label.

Any idea on how to achieve this?

Many thanks and greetings,

Michel

Michel,

If you don't want to go down the route of deriving a class with a new
property, you can use the "Tag" property of the textbox to associate it with
a label.  The example below isn't exactly as you require because I'm not
dynamically creating the control, but you may see the concept.  In "New" I
add a reference to each label into the tag property of the box.  When the
box text changes, I retrieve the label by casting the tag property of the
text box.  This example requires two text boxes and two labels on a form
(Label1, Label2, TextBox1, TextBox2).


Robin




Public Class Form1

    Public Sub New()

        ' This call is required by the Windows Form Designer.

        InitializeComponent()

        ' Add any initialization after the InitializeComponent() call.

        Me.TextBox1.Tag = Me.Label1

        Me.TextBox2.Tag = Me.Label2

    End Sub

    Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As
System.EventArgs) Handles TextBox1.TextChanged

        Dim theLabel As Label = CType(TextBox1.Tag, Label)

        theLabel.Text = TextBox1.Text

    End Sub

    Private Sub TextBox2_TextChanged(ByVal sender As Object, ByVal e As
System.EventArgs) Handles TextBox2.TextChanged

        Dim theLabel As Label = CType(TextBox2.Tag, Label)

        theLabel.Text = TextBox2.Text

    End Sub

End Class



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