Public Class DateCalc Private Sub DateCalc_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim DateInterval As Integer = 7 End Sub Private Sub DateChooser_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateChooser.ValueChanged If DateNumber.Text.Length > 0 Then DateInterval = CInt(DateNumber.Text) End If NextWeek.Text = DateChooser.Value.Add(TimeSpan.FromDays(7)).ToString() End Sub End Class