Dim obj As System.Windows.Forms.Control
 
 
        For Each obj In Me.GroupBox1.Controls
            If TypeOf obj Is System.Windows.Forms.TextBox Then
                obj.Text = ""
            End If
        Next
 
        For Each obj In Me.GroupBox1.Controls
            If TypeOf obj Is System.Windows.Forms.ComboBox Then
                obj.Text = ""
                FillCombo(obj)
            End If
        Next