Creating Invoice And Entering Data Quickly Through Userforms

           In this invoice template ,the userforms that contains textbox,listbox and buttons are used to enter quickly data of customers and products:

- Requested data can be searched in lists(product list or customer list) through the text boxes . Then,     when the list item is double-clicked or when the enter key is pressed, the item's data is entered in       the sheet.

- The created macro gives warning using cell blink (flashing cell method) when product quantity not    entered to quantity range. -It can be seen in the above video-
- Addition and multiplication operations in column G are performed through formulas (=E21*F21,      =SUM(G21:G35) etc.) The used formulas in worksheet are protected by the following codes :

      Private Sub Worksheet_Change(ByVal Target As Range)
     If Target.Address = "$G$21" Then
      Target.Formula = "=E21*F21"
      ElseIf Target.Address = "$G$22" Then
      Target.Formula = "=E22*F22"
       ElseIf Target.Address = "$G$23" Then
      Target.Formula = "=E23*F23"
       ElseIf Target.Address = "$G$24" Then
      Target.Formula = "=E24*F24"
       ElseIf Target.Address = "$G$25" Then
      Target.Formula = "=E25*F25"
       ElseIf Target.Address = "$G$26" Then
      Target.Formula = "=E26*F26"
       ElseIf Target.Address = "$G$27" Then
      Target.Formula = "=E27*F27"
       ElseIf Target.Address = "$G$28" Then
      Target.Formula = "=E28*F28"
       ElseIf Target.Address = "$G$29" Then
      Target.Formula = "=E29*F292"
       ElseIf Target.Address = "$G$30" Then
      Target.Formula = "=E30*F30"
       ElseIf Target.Address = "$G$31" Then
      Target.Formula = "=E31*F31"
       ElseIf Target.Address = "$G$32" Then
      Target.Formula = "=E32*F32"
       ElseIf Target.Address = "$G$33" Then
      Target.Formula = "=E33*F33"
       ElseIf Target.Address = "$G$34" Then
      Target.Formula = "=E34*F34"
       ElseIf Target.Address = "$G$35" Then
      Target.Formula = "=E35*F35"
       ElseIf Target.Address = "$G$36" Then
      Target.Formula = "=SUM(G21:G35)"
       ElseIf Target.Address = "$G$41" Then
      Target.Formula = "=SUM(G36:G39)"
      End If
      End Sub

- The created invoice can be copied to selected record sheet.