This document contains Visual Basic code for several forms that manage product inventory. The code handles populating dropdown lists and text boxes from spreadsheet data, validating user input, and updating spreadsheet cells when data is added or modified. Forms include ones for data entry, modification, and a main menu. Code samples show looping through spreadsheet cells, checking for empty cells, and updating or retrieving values to populate the form controls.

1. CODIGO PARA EL FORMULARIO frm_Entradas
Private SubComboBox1_Change()
DimFilaAs Integer
DimFinal As Integer
If ComboBox1.Value="" Then
Me.txt_Nombre =""
Me.txt_Saldo= ""
End If
For Fila= 2 To 1000
If Hoja2.Cells(Fila,1) = "" AndHoja5.Cells(Fila,1) = "" Then
Final = Fila- 1
ExitFor
EndIf
Next
For Fila= 2 To Final
If ComboBox1= Hoja2.Cells(Fila,1) Then
Me.txt_Nombre =Hoja2.Cells(Fila,2)
ExitFor
EndIf
Next

2. For Fila= 2 To Final
If ComboBox1= Hoja5.Cells(Fila,1) Then
Me.txt_Saldo=Hoja5.Cells(Fila,3)
ExitFor
EndIf
Next
End Sub
Private SubComboBox1_Enter()
DimFilaAs Integer
DimFinal As Integer
DimLista As String
For Fila= 1 To ComboBox1.ListCount
ComboBox1.RemoveItem0
NextFila
For Fila= 2 To 1000
If Hoja2.Cells(Fila,1) = "" Then
Final = Fila- 1
ExitFor
EndIf
Next

3. For Fila= 2 To Final
Lista= Hoja2.Cells(Fila,1)
ComboBox1.AddItem(Lista)
Next
End Sub
Private SubCommandButton1_Click()
DimFilaAs Integer
DimFinal As Integer
DimExistenciaAsInteger
DimTotal AsInteger
For Fila= 2 To 1000
If Hoja3.Cells(Fila,1) = "" Then
Final = Fila
ExitFor
EndIf
Next
Hoja3.Cells(Final,1) = Me.ComboBox1
Hoja3.Cells(Final,2) = Me.txt_Nombre
Hoja3.Cells(Final,3) = Me.txt_FechaIng
Hoja3.Cells(Final,4) = Me.txt_Factura

4. Hoja3.Cells(Final,5) = Me.txt_Proveedor
Hoja3.Cells(Final,6) = Me.txt_Cantidad
For Fila= 2 To 1000
If Hoja5.Cells(Fila,1) = Hoja3.Cells(Final,1) Then
Existencia=Hoja5.Cells(Fila,3)
Total = Me.txt_Cantidad+Existencia
Hoja5.Cells(Fila,3) = Total
ExitFor
EndIf
Next
Me.ComboBox1=""
Me.txt_Nombre =""
Me.txt_FechaIng=""
Me.txt_Factura= ""
Me.txt_Proveedor=""
Me.txt_Cantidad=""
End Sub
Private SubCommandButton2_Click()
UnloadMe
End Sub

5. CODIGO frm_Menu
Private SubCommandButton1_Click()
frm_RegistrarProducto.Show
End Sub
Private SubCommandButton2_Click()
frm_ModificarProducto.Show
End Sub
Private SubCommandButton3_Click()
frm_Entradas.Show
End Sub
CODIGO frm_ModificarProducto
Private SubComboBox1_Change()
DimFilaAs Integer
DimFinal As Integer
If ComboBox1.Value="" Then
Me.txt_Nombre =""
Me.txt_Descrip= ""
End If
For Fila= 2 To 1000
If Hoja2.Cells(Fila,1) = "" Then
Final = Fila- 1
ExitFor
EndIf
Next

6. For Fila= 2 To Final
If ComboBox1= Hoja2.Cells(Fila,1) Then
Me.txt_Nombre =Hoja2.Cells(Fila,2)
Me.txt_Descrip=Hoja2.Cells(Fila,3)
ExitFor
EndIf
Next
End Sub
Private SubComboBox1_Enter()
DimFilaAs Integer
DimFinal As Integer
DimLista As String
For Fila= 1 To ComboBox1.ListCount
ComboBox1.RemoveItem0
NextFila
For Fila= 2 To 1000
If Hoja2.Cells(Fila,1) = "" Then
Final = Fila- 1
ExitFor

7. EndIf
Next
For Fila= 2 To Final
Lista= Hoja2.Cells(Fila,1)
ComboBox1.AddItem(Lista)
Next
End Sub
Private SubCommandButton1_Click()
Dim FilaAsInteger
Dim Final AsInteger
For Fila= 2 To 1000
If Hoja2.Cells(Fila,1) = "" AndHoja3.Cells(Fila,1) = "" AndHoja5.Cells(Fila,1) ="" Then
Final = Fila- 1
ExitFor
EndIf
Next
For Fila= 2 To Final
If Me.ComboBox1= Hoja2.Cells(Fila, 1) Then
Hoja2.Cells(Fila,2) = Me.txt_Nombre
Hoja2.Cells(Fila,3) = Me.txt_Descrip

8. ExitFor
EndIf
Next
'-------------------------------------------------
For Fila= 2 To Final
If Me.ComboBox1= Hoja3.Cells(Fila,1) Then
Hoja3.Cells(Fila,2) = Me.txt_Nombre
EndIf
Next
For Fila= 2 To Final
If Me.ComboBox1= Hoja5.Cells(Fila,1) Then
Hoja5.Cells(Fila,2) = Me.txt_Nombre
ExitFor
EndIf
Next
'-------------------------------------------------
Me.ComboBox1= ""
Me.txt_Nombre =""
Me.txt_Descrip= ""

9. End Sub
Private SubCommandButton2_Click()
UnloadMe
End Sub
CODIGO frm_RegistrarProducto
Private SubCommandButton1_Click()
Dim FilaAsInteger
Dim Final AsInteger
Dim RegistroAsInteger
ForFila= 1 To 1000
If Hoja2.Cells(Fila,1) = "" Then
Final = Fila
ExitFor
End If
Next
ForRegistro= 2 To Final
If Hoja2.Cells(Registro,1) = Me.txt_CodProdThen
Me.txt_CodProd.BackColor=&H8080FF
MsgBox ("Registroyaexiste"+Chr(13) + "Ingrese uncódigodiferente")
Me.txt_CodProd.SetFocus

10. ExitSub
ExitFor
End If
Next
If MsgBox("Soncorrectoslosdatos?"+ Chr(13) + "Deseaproceder?",vbOKCancel) =vbOKThen
Me.txt_CodProd.BackColor=&HFFFFFF
Hoja2.Cells(Final,1) = Me.txt_CodProd
Hoja2.Cells(Final,2) = Me.txt_Nombre
Hoja2.Cells(Final,3) = Me.txt_Descrip
'-----------------------------------------------
Hoja5.Cells(Final,1) = Me.txt_CodProd
Hoja5.Cells(Final,2) = Me.txt_Nombre
Hoja5.Cells(Final,3) = 0
'-----------------------------------------------
Me.txt_CodProd=""
Me.txt_Nombre =""
Me.txt_Descrip= ""
Me.txt_CodProd.SetFocus
Else
ExitSub
End If
End Sub
Private Sub CommandButton2_Click()
UnloadMe

11. End Sub
MODULO 1
SubMenu_Principal()
frm_Menu.Show
End Sub