1. Modulo:

2. Presentación del Sistema :

3. Formulario Inicio de Sesion :

Programación del Frm Inicio de Sesion

Private Sub cmdaceptar_Click()If Len(Trim(txtusuario.Text)) = 0 Then MsgBox "Ingrese el Nombre de Usuario", vbInformation, "mensaje" txtusuario.SetFocus Exit SubEnd If

If Len(Trim(txtclave.Text)) = 0 Then MsgBox "Ingrese su Clave Correcta", vbInformation, "mensaje" txtclave.SetFocus Exit SubEnd If

If Len(Trim(txtuser.Text)) = "0" Then MsgBox "Ingrese el nombre del Servidor ", vbInformation, "mensaje" txtuser.SetFocus Exit SubEnd If'llama la funcion conectar que se encuentra en el moduloIf conectar(Trim(txtusuario.Text), Trim(txtclave.Text), Trim(txtuser.Text)) = True Then MsgBox "Bienvenido al Sistema de Biblioteca", vbInformation, "Sistema de Biblioteca" frmpresentacion.Show

Unload frminicio Else MsgBox "No tiene Autorización para Ingresar !!!", vbInformation, "Sistema de Biblioteca" Unload Me End IfEnd Sub

Private Sub cmdcancelar_Click()Unload MeEnd Sub

Private Sub txtusuario_KeyPress(KeyAscii As Integer)Select Case KeyAscii Case 97 To 122 Case 65 To 90 Case 8, 32 Case Else KeyAscii = 0 End SelectEnd Sub

3. Formulario Menú Principal:

4.Formulario Registro de Usuarios :

Programación del Formulario Usuario

Public Sub cargarlv()On Error GoTo errorSet rusu = New ADODB.Recordset lv.ListItems.Clear rusu.Open "select * from usuario", cn, adOpenForwardOnly, adLockReadOnly Do While Not rusu.EOF Set mitem = lv.ListItems.Add(, , rusu!NMatricula, , 1) mitem.ListSubItems.Add Text:="" & rusu!Apellidos mitem.ListSubItems.Add Text:="" & rusu!nombres mitem.ListSubItems.Add Text:="" & rusu!fechanacimiento mitem.ListSubItems.Add Text:="" & rusu!codcarrera rusu.MoveNext Loop rusu.Close Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"

End Sub

Public Sub limpiar()For Each Control In Controls If TypeOf Control Is TextBox Then Control.Text = "" dccarrera = "" End If Next End Sub

Public Sub habilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = TrueEnd IfNextEnd Sub

Public Sub deshabilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = FalseEnd IfNextEnd Sub

Private Sub cmdactualizar_Click()On Error GoTo error ' Inicia la transaccion cn.BeginTrans sql = "" sql = "update usuario set apellidos = '" & txtapell.Text & "', nombres ='" & txtnom.Text & "', fechanacimiento = '" & txtfecha.Text & "',codcarrera = '" & dccarrera.BoundText & "' where nmatricula ='" & txtnum.Text & "'" rusu.Open sql, cn, adOpenKeyset, adLockReadOnly MsgBox "Se Actualizo Correcatamente", vbInformation, "Sistema de Biblioteca" cmdnuevo.Enabled = True ' Confirma la transacion cn.CommitTrans 'cargar en le list view Call cargarlv Exit Suberror: 'deshace la transacion cn.RollbackTrans MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub CmdBuscar_Click()On Error GoTo errorSet rusu = New ADODB.Recordsetrusu.Open "sp_buscarusuario '" & txtnum.Text & "'", cn, adOpenKeyset, adLockOptimistictxtnum.Text = rusu!NMatriculatxtapell.Text = rusu!Apellidostxtnom.Text = rusu!nombrestxtfecha.Text = rusu!fechanacimientodccarrera.BoundText = "" & rusu!codcarrera rusu.Close txtnum.Enabled = False: txtapell.SetFocus cmdactualizar.Enabled = True: cmdeliminar.Enabled = True cmdnuevo.Enabled = True Exit Suberror:MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub cmdcerrar_Click()Unload MeEnd SubPrivate Sub cmdeliminar_Click()On Error GoTo errorcn.BeginTransrusu.Open "delete from usuario where nmatricula = '" & lv.SelectedItem.Text & "'", cn, adOpenKeyset, adLockPessimisticMsgBox "Se Elimino Correctamente a :" & Chr(13) & txtapell.Text, vbInformation, "Sistema de Biblioteca"cn.CommitTrans'Elimina el elemento del listviewlv.ListItems.Remove lv.SelectedItem.Index' Llama procedimineto limpiar Call limpiar Exit Suberror: cn.RollbackTrans MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub cmdguardar_Click()Set rusu = New ADODB.RecordsetOn Error GoTo errorcn.BeginTransrusu.Open "insert into usuario values('" & txtnum.Text & "','" & txtapell.Text & "','" & txtnom.Text & "' ," & txtfecha.Text & " ,'" & dccarrera.BoundText & "' )", cnMsgBox "Se Inserto Correctamente", vbInformation, "Sistema de Biblioteca"cn.CommitTranscmdguardar.Enabled = Falsecmdnuevo.Enabled = True

'insertar en el listview Set mitem = lv.ListItems.Add(, , txtnum.Text, , 1) mitem.ListSubItems.Add Text:="" & txtapell.Text mitem.ListSubItems.Add Text:="" & txtnom.Text mitem.ListSubItems.Add Text:="" & txtfecha.Text mitem.ListSubItems.Add Text:="" & dccarrera.BoundTextExit Suberror:cn.RollbackTransMsgBox Err.Description, vbInformation, "Sistema dw Biblioteca"End Sub

Private Sub cmdimprimir_Click()rusu.Open "select * from usuario", cnSet rptusuario.DataSource = rusurptusuario.ShowEnd Sub

Private Sub cmdnuevo_Click()Call limpiarCall habilitatxtnum.SetFocuscmdguardar.Enabled = Truecmdnuevo.Enabled = Falsecmdactualizar.Enabled = Falsecmdeliminar.Enabled = FalseEnd Sub

Private Sub Form_Load()Call cargarlvSet rusu1 = New ADODB.Recordsetrusu1.Open "select * from carrera ", cn, adOpenKeyset, adLockOptimisticSet dccarrera.RowSource = rusu1dccarrera.ListField = "descricarrera"dccarrera.BoundColumn = "codcarrera"cmdguardar.Enabled = Falsecmdactualizar.Enabled = Falsecmdeliminar.Enabled = Falsefecha = Format(Date, "Long Date")hora = Format(Time, "long time")End Sub

Private Sub LV_Click()On Error GoTo errorSet rusu1 = New ADODB.Recordsetrusu1.Open "select * from carrera ", cn, adOpenKeyset, adLockOptimisticSet dccarrera.RowSource = rusu1dccarrera.ListField = "descricarrera"dccarrera.BoundColumn = "codcarrera"Set rusu = New ADODB.Recordset

rusu.Open "sp_buscarusuario '" & (lv.SelectedItem.Text) & "'", cn, adOpenForwardOnly, adLockReadOnly txtnum.Text = rusu!NMatricula txtapell.Text = "" & rusu!Apellidos txtnom.Text = "" & rusu!nombres txtfecha.Text = "" & rusu!fechanacimiento dccarrera.BoundText = rusu!codcarrera cmdactualizar.Enabled = True cmdeliminar.Enabled = True rusu.Close Call habilita txtnum.Enabled = False cmdactualizar.Enabled = True cmdeliminar.Enabled = True cmdnuevo.Enabled = True Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca" txtnum.SetFocus End Sub

Private Sub txtapell_KeyPress(KeyAscii As Integer)Select Case KeyAscii Case 97 To 122 Case 65 To 90 Case 8, 32 Case Else KeyAscii = 0 End SelectEnd Sub

Private Sub txtfecha_KeyPress(KeyAscii As Integer) Select Case keyacsii Case 48 To 57 Case 47, 32 Case 8 Case Else KeyAscii = 0 End SelectEnd Sub

Private Sub txtnom_KeyPress(KeyAscii As Integer)Select Case KeyAscii Case 97 To 122 Case 65 To 90 Case 8, 32 Case Else KeyAscii = 0 End Select

End Sub

Private Sub txtnum_KeyPress(KeyAscii As Integer)Select Case KeyAscii Case 48 To 57 Case 77 Case 8, 32 Case Else KeyAscii = 0 End Select End Sub

5.Formulario Registro de Libros :

Programación de Formulario Titulo

Public Sub limpiar()For Each Control In Controls If TypeOf Control Is TextBox Then Control.Text = "" dcedito = "" End If NextEnd SubPublic Sub habilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = TrueEnd IfNextEnd SubPublic Sub deshabilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = FalseEnd IfNextEnd SubPublic Sub cargarlv()On Error GoTo errorSet rstitulo = New ADODB.Recordset lv2.ListItems.Clear rstitulo.Open "select * from Titulo", cn, adOpenForwardOnly, adLockReadOnly Do While Not rstitulo.EOF Set mitem = lv2.ListItems.Add(, , rstitulo!codtitulo, , 1) mitem.ListSubItems.Add Text:="" & rstitulo!nomTitulo mitem.ListSubItems.Add Text:="" & rstitulo!anhopublic mitem.ListSubItems.Add Text:="" & rstitulo!isbn mitem.ListSubItems.Add Text:="" & rstitulo!Descripcion mitem.ListSubItems.Add Text:="" & rstitulo!autor mitem.ListSubItems.Add Text:="" & rstitulo!codeditorial mitem.ListSubItems.Add Text:="" & rstitulo!cantidad rstitulo.MoveNext Loop rstitulo.Close Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub cmdactualizar_Click() On Error GoTo error ' Inicia la transaccion cn.BeginTrans

sql = "" sql = "update titulo set nomtitulo = '" & txttitulo.Text & "', anhopublic ='" & dpaño.Value & "', isbn = '" & txtisbn.Text & "', descripcion = '" & txtdescri.Text & "' , autor ='" & txtaut.Text & "', codeditorial ='" & dcedito.BoundText & "', cantidad ='" & txtcant.Text & "' where codtitulo ='" & txtcod.Text & "'" rstitulo.Open sql, cn, adOpenKeyset, adLockReadOnly MsgBox "Se Actualizo Correcatamente", vbInformation, "Sistema de Biblioteca" ' Confirma la transacion cn.CommitTrans 'cargar en le list view Call cargarlv Exit Suberror: 'deshace la transacion cn.RollbackTrans MsgBox Err.Description, vbInformation, "Sistema de Biblioteca" End SubPrivate Sub cmdcerrar_Click()Unload MeEnd SubPrivate Sub cmdcancelar_Click()Unload MeEnd SubPrivate Sub cmdeliminar_Click()On Error GoTo errorcn.BeginTransrstitulo.Open "delete from titulo where codtitulo = '" & lv2.SelectedItem.Text & "'", cn, adOpenKeyset, adLockPessimisticMsgBox "Se Elimino Correctamente a :" & Chr(13) & txttitulo.Text, vbInformation, "Sistema de Biblioteca"cn.CommitTrans'Elimina el elemento del listviewlv2.ListItems.Remove lv2.SelectedItem.Index' Llama procedimineto limpiar Call limpiar Exit Suberror: cn.RollbackTrans MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub cmdguardar_Click()Set rstitulo = New ADODB.RecordsetOn Error GoTo errorcn.BeginTransrstitulo.Open "Insert Into titulo values('" & txtcod.Text & "','" & txttitulo.Text & "','" & dpaño.Value & "' ,'" & txtisbn.Text & " ','" & txtdescri.Text & "' ,'" & txtaut.Text & "','" & dcedito.BoundText & "','" & txtcant.Text & "' )", cnMsgBox "Se Guardo Correctamente", vbInformation, "Sistema de Biblioteca"cn.CommitTrans

cmdguardar.Enabled = Falsecmdnuevo.Enabled = TrueCall limpiar'insertar en el listview Set mitem = lv2.ListItems.Add(, , txtcod.Text, , 1) mitem.ListSubItems.Add Text:="" & txttitulo.Text mitem.ListSubItems.Add Text:="" & dpaño.Value mitem.ListSubItems.Add Text:="" & txtisbn.Text mitem.ListSubItems.Add Text:="" & txtdescri.Text mitem.ListSubItems.Add Text:="" & txtaut.Text mitem.ListSubItems.Add Text:="" & dcedito.BoundText mitem.ListSubItems.Add Text:="" & txtcant.TextExit Suberror:cn.RollbackTransMsgBox Err.Description, vbInformation, "Sistema dw Biblioteca"End SubPrivate Sub cmdnuevo_Click()Call limpiarCall habilitatxtcod.SetFocuscmdguardar.Enabled = Truecmdnuevo.Enabled = Falsecmdactualizar.Enabled = FalseEnd Sub

Private Sub CmdReporte_Click()Set rsreptitulo = New ADODB.Recordsetrsreptitulo.Open "select * from Titulo", cnSet rptitulo.DataSource = rsreptitulorptitulo.ShowEnd Sub

Private Sub Form_Load()Call cargarlvcmdguardar.Enabled = Falsecmdactualizar.Enabled = False'cmdeliminar.Enabled = FalseSet rstitulo = New ADODB.Recordset rstitulo.Open "Select * From editorial ", cn, adOpenKeyset, adLockReadOnly Set dcedito.RowSource = rstitulo dcedito.ListField = "companhia" dcedito.BoundColumn = "Codeditorial" fecha = Format(Date, "Long Date")hora = Format(Time, "long time")End Sub

Private Sub lv2_Click()'On Error GoTo errorSet rst = New ADODB.Recordset

rst.Open "Select * From editorial ", cn, adOpenKeyset, adLockReadOnly Set dcedito.RowSource = rst dcedito.ListField = "companhia" dcedito.BoundColumn = "Codeditorial"Set rstitulo = New ADODB.Recordset rstitulo.Open "select * from titulo where codtitulo = '" & (lv2.SelectedItem.Text) & "'", cn, adOpenForwardOnly, adLockReadOnly txtcod.Text = rstitulo!codtitulo txttitulo.Text = "" & rstitulo!nomTitulo dpaño.Value = "" & rstitulo!anhopublic txtisbn.Text = "" & rstitulo!isbn txtdescri.Text = "" & rstitulo!Descripcion txtaut.Text = "" & rstitulo!autor dcedito.BoundText = "" & rstitulo!codeditorial txtcant.Text = "" & rstitulo!cantidad rstitulo.Close cmdactualizar.Enabled = TrueExit Sub'error: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca" txtcod.SetFocusEnd Sub

6.Formulario Registro de Editorial :

Programación del Formulario Editorial

Public Sub cargarlv()On Error GoTo errorSet rseditorial = New ADODB.Recordset lv.ListItems.Clear rseditorial.Open "select * from editorial", cn, adOpenForwardOnly, adLockReadOnly Do While Not rseditorial.EOF Set mitem = lv.ListItems.Add(, , rseditorial!codeditorial, , 1) mitem.ListSubItems.Add Text:="" & rseditorial!companhia mitem.ListSubItems.Add Text:="" & rseditorial!web mitem.ListSubItems.Add Text:="" & rseditorial!email mitem.ListSubItems.Add Text:="" & rseditorial!pais rseditorial.MoveNext Loop rseditorial.Close Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Public Sub limpiar()For Each Control In Controls If TypeOf Control Is TextBox Then Control.Text = "" End If Next End SubPublic Sub habilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = TrueEnd IfNextEnd SubPublic Sub deshabilita()For Each Control In ControlsIf TypeOf Control Is TextBox Then Control.Enabled = FalseEnd IfNextEnd Sub

Private Sub cmdcancelar_Click()Unload MeEnd Sub

Private Sub cmdguardar_Click()Set rseditorial = New ADODB.RecordsetOn Error GoTo error

cn.BeginTransrseditorial.Open "insert into editorial values('" & txtcodeditorial.Text & "','" & txtcia.Text & "','" & txtweb.Text & "' ,'" & txtemail.Text & " ','" & txtpais.Text & "' )", cn, adOpenKeyset, adLockOptimisticMsgBox "Se Inserto Correctamente", vbInformation, "Sistema de Biblioteca"cn.CommitTranscmdguardar.Enabled = Falsecmdnuevo.Enabled = True'insertar en el listview Set mitem = lv.ListItems.Add(, , txtcodeditorial.Text, , 1) mitem.ListSubItems.Add Text:="" & txtcia.Text mitem.ListSubItems.Add Text:="" & txtweb.Text mitem.ListSubItems.Add Text:="" & txtemail.Text mitem.ListSubItems.Add Text:="" & txtpais.TextExit Suberror:cn.RollbackTransMsgBox Err.Description, vbInformation, "Sistema dw Biblioteca"End Sub

Private Sub cmdnuevo_Click()Call limpiarCall habilitatxtcodeditorial.SetFocuscmdguardar.Enabled = Truecmdnuevo.Enabled = FalseEnd Sub

Private Sub cmmdBuscar_Click()On Error GoTo errorSet rseditorial = New ADODB.Recordsetrseditorial.Open "sp_BuscarEditorial '" & txtcodeditorial.Text & "'", cn, adOpenKeyset, adLockOptimistictxtcodeditorial.Text = rseditorial!codeditorialtxtcia.Text = rseditorial!companhiatxtweb.Text = rseditorial!webtxtemail.Text = rseditorial!emailtxtpais.Text = rseditorial!pais rseditorial.Close txtcodeditorial.Enabled = False: txtcia.SetFocus cmdnuevo.Enabled = True Exit Suberror:MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub Form_Load()Call cargarlvSet rseditorial = New ADODB.Recordsetrseditorial.Open "select * from editorial ", cn, adOpenKeyset, adLockOptimistic

cmdguardar.Enabled = Falsefecha = Format(Date, "Long Date")hora = Format(Time, "long time")End Sub

Private Sub LV_Click()On Error GoTo errorSet rseditorial = New ADODB.Recordsetrseditorial.Open "select * from editorial ", cn, adOpenKeyset, adLockOptimisticSet rseditorial = New ADODB.Recordset rseditorial.Open "sp_BuscarEditorial '" & (lv.SelectedItem.Text) & "'", cn, adOpenForwardOnly, adLockReadOnly txtcodeditorial.Text = rseditorial!codeditorial txtcia.Text = "" & rseditorial!companhia txtweb.Text = "" & rseditorial!web txtemail.Text = "" & rseditorial!email txtpais.Text = "" & rseditorial!pais rseditorial.Close Call habilita txtcodeditorial.Enabled = False cmdnuevo.Enabled = True Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca" txtcodeditorial.SetFocusEnd Sub

7.Formulario Registrando Pretasmo :

Programación del Formulario Prestamo

Dim sql As StringDim regcodi, codigo As StringPublic Sub limpiar()For Each Control In Controls If TypeOf Control Is TextBox Then Control.Text = "" End If NextEnd SubPublic Sub habilita()For Each Control In Controls If TypeOf Control Is TextBox Then Control.Enabled = True End If

NextEnd SubPublic Sub Listalibro() Do While Not rstitulo.EOF Set mitem = Lvlibros.ListItems.Add(, , rstitulo!codtitulo, , 1) mitem.ListSubItems.Add Text:="" & rstitulo!nomTitulo mitem.ListSubItems.Add Text:="" & rstitulo!autor Dim edit As Variant edit = rstitulo!codeditorial Set rsmyedi = New ADODB.Recordset sql = "Select * from Editorial Where CodEditorial='" & edit & "'" rsmyedi.Open sql, cn, adOpenKeyset, adLockOptimistic mitem.ListSubItems.Add Text:="" & rsmyedi!companhia rstitulo.MoveNext LoopEnd SubPublic Sub deshab_Paleta()sstabpres.Tab = indicesstabpres.TabEnabled(indice) = Falsefrbus.Enabled = Falsetxtdatos.Enabled = Falsecmdnuevoprest.Enabled = Falsecmdbuscart.Enabled = Falsecmdregprest.Enabled = Falsecmdvisualusu.Enabled = FalseEnd SubPublic Sub Hab_paleta()sstabpres.TabEnabled(indice) = Truefrbus.Enabled = Truetxtdatos.Enabled = Truecmdbuscart.Enabled = Truecmdregprest.Enabled = Truecmdvisualusu.Enabled = TrueEnd SubPublic Sub cargarlv()On Error GoTo errorSet rstitulo = New ADODB.Recordset lv.ListItems.Clear rstitulo.Open "select * from Titulo", cn, adOpenForwardOnly, adLockReadOnly Do While Not rstitulo.EOF Set mitem = lv.ListItems.Add(, , rstitulo!codtitulo, , 1) mitem.ListSubItems.Add Text:="" & rstitulo!nomTitulo mitem.ListSubItems.Add Text:="" & rstitulo!autor mitem.ListSubItems.Add Text:="" & rstitulo!codeditorial rstitulo.MoveNext Loop rstitulo.Close Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"

End SubPublic Sub alumno()On Error GoTo errorSet rusu = New ADODB.Recordsetsql = "select * from Usuario where NMatricula='" & txtmatri.Text & "'"rusu.Open sql, cn, adOpenKeyset, adLockOptimistictxtmatri.Text = rusu!NMatriculatxtapell.Text = rusu!Apellidostxtnom.Text = rusu!nombresDim XX As VariantXX = rusu!codcarreraSet rusu1 = New ADODB.Recordsetrusu1.Open "select * from carrera where Codcarrera='" & XX & "'", cn, adOpenKeyset, adLockOptimistictxtcar.Text = rusu1!descriCarrerarusu.Close Exit Suberror:MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Sub

Private Sub CmdBuscar_Click()If Len(Trim(txtmatri.Text)) = 0 Then MsgBox "Ingrese el Código o Número de libro que desea buscar" txtmatri.SetFocus Else mysql = "" mysql = "SELECT COUNT(*) AS cantidad From Prestamo WHERE (nmatricula = '" & txtmatri.Text & "') AND (FechaDevol IS NULL)" Set rsprestamo = New ADODB.Recordset rsprestamo.Open mysql, cn, adOpenKeyset, adLockOptimisticIf rsprestamo!cantidad = 1 Then MsgBox "Prestamo indisponible...usted es deudor", vbInformation, "Sistema de Biblioteca" Call alumno sstabpres.TabEnabled(0) = False sstabpres.TabEnabled(1) = True sstabpres.Tab = (1) Set rstitulo = New ADODB.Recordset Mysql2 = "" Mysql2 = "SELECT TITULO.Codtitulo,Titulo.nomtitulo,Titulo.Autor,Titulo.Codeditorial FROM PRESTAMO INNER JOIN TITULO ON PRESTAMO.CODTITULO=TITULO.CODTITULO WHERE NMATRICULA='" & txtmatri.Text & "'" rstitulo.Open Mysql2, cn, adOpenForwardOnly, adLockReadOnly txtcodigo.Text = rstitulo!codtitulo txttitulo.Text = rstitulo!nomTitulo txtautor.Text = rstitulo!autor Dim aa As String

aa = rstitulo!codeditorial Set editorial1 = New ADODB.Recordset sql = "select * from editorial where CodEditorial='" & aa & "'" editorial1.Open sql, cn, adOpenKeyset, adLockOptimistic txteditorial.Text = editorial1!companhia rstitulo.Close 'registrando el monto Dim nn As Variant Set rsprestamo = New ADODB.Recordset sql = "select * from prestamo where NMatricula='" & txtmatri.Text & "'" rsprestamo.Open sql, cn, adOpenKeyset, adLockOptimistic nn = rsprestamo!Fechaprestamo TxtMonto.Text = DateDiff("d", CVDate(nn), Date) * Val(1.5) Else Call alumno sstabpres.TabEnabled(0) = True sstabpres.TabEnabled(1) = False sstabpres.Tab = (0) End If End If End SubPrivate Sub cmdbuscart_Click()If Len(Trim(txtdatos.Text)) = 0 Then MsgBox "Ingrese el Código o Número de libro que desea buscar" txtdatos.SetFocus Else On Error GoTo errorSet rstitulo = New ADODB.RecordsetLvlibros.ListItems.ClearSelect Case True Case optcodigo.Value sql = " select * from Titulo where CodTitulo='" & txtdatos.Text & " '" rstitulo.Open sql, cn, adOpenKeyset, adLockOptimistic Dim mycantidad, Image As Variant mycantidad = rstitulo!cantidad sql = "SELECT COUNT(*) AS cantidad From Prestamo WHERE codtitulo = '" & txtdatos.Text & "' AND (FechaDevol IS NULL)" Set rsprestamo = New ADODB.Recordset rsprestamo.Open sql, cn, adOpenKeyset, adLockReadOnly Do While Not rstitulo.EOF If rsprestamo!cantidad = mycantidad Then Image = 0 Else Image = 1 End If Set mitem = Lvlibros.ListItems.Add(, , rstitulo!codtitulo, , IIf(Image = 0, 1, 2)) mitem.ListSubItems.Add Text:="" & rstitulo!nomTitulo mitem.ListSubItems.Add Text:="" & rstitulo!autor Dim edit As Variant

edit = rstitulo!codeditorial Set rsmyedi = New ADODB.Recordset sql = "Select * from Editorial Where CodEditorial='" & edit & "'" rsmyedi.Open sql, cn, adOpenKeyset, adLockOptimistic mitem.ListSubItems.Add Text:="" & rsmyedi!companhia rstitulo.MoveNext LoopCase optitulo.Value sql = "select * from Titulo where nomTitulo like '" & txtdatos.Text & "%'" rstitulo.Open sql, cn, adOpenKeyset, adLockOptimistic Call ListalibroEnd Select rstitulo.Close Exit Suberror: MsgBox Err.Description, vbInformation, "Sistema de Biblioteca"End Ifcmdregprest.Enabled = FalseEnd Sub

8.Formulario Registrando Devolución :

Programación del Formulario DevoluciónPrivate Sub cmdDevolución_Click()Dim xcd, mycodi, codevol As Variant'***genera codigoSet rsdevcod = New ADODB.Recordsetsql = "select * from deuda"rsdevcod.Open sql, cn, adOpenKeyset, adLockOptimisticrsdevcod.MoveLastNReg = rsdevcod!coddeuda

xcd = CInt(Right(NReg, 3))If Len(Trim(xcd)) = 1 Then xcd = "00" & xcd + 1 codevol = xcd ElseIf Len(Trim(NReg)) = 2 Then xcod = "0" & xcd + 1 codevol = xcd End If'***Set rscodP = New ADODB.Recordsetsql = "Select * from Prestamo Where Nmatricula='" & txtmatri.Text & "' And (Fechadevol is null)"rscodP.Open sql, cn, adOpenKeyset, adLockReadOnlymycodi = rscodP!codprestamo'***registra devolucionSet rsdevolucion = New ADODB.Recordsetsql = "Insert Into deuda (coddeuda,codprestamo,monto,numcomprobante) values ('" & codevol & "','" & mycodi & "'," & TxtMonto.Text & ",'" & Txtcomprobante.Text & "')"rsdevolucion.Open sql, cn, adOpenKeyset, adLockOptimisticxsql = "Update Prestamo set Fechadevol='" & fecha.Caption & "' where codprestamo='" & mycodi & "'"Set rsregPres = New ADODB.RecordsetrsregPres.Open xsql, cn, adOpenKeyset, adLockPessimisticMsgBox "Se registró correctamente la devolución ...", vbInformation, "Sistema de Biblioteca"Call limpiartxtmatri.SetFocussstabpres.Tab = 0cmdregprest.Enabled = TrueEnd Sub

Private Sub cmdnuevoprest_Click()Call limpiarCall habilitatxtmatri.SetFocusEnd SubPrivate Sub cmdregprest_Click()Set rsprestamo = New ADODB.Recordsetrsprestamo.Open "select * from Prestamo", cn, adOpenKeyset, adLockOptimisticrsprestamo.MoveLastregcodi = rsprestamo!codprestamocodigo = CInt(regcodi)codigo = codigo + 1rsprestamo.Close Set rsprestamo = New ADODB.Recordsetrsprestamo.Open "insert into Prestamo (codprestamo,nmatricula,codtitulo,fechaprestamo) values ( '" & codigo & "', '" &

txtmatri.Text & "','" & Lvlibros.SelectedItem.Text & "','" & fecha.Caption & "')", cn, adOpenKeyset, adLockOptimisticMsgBox "Se inserto correctamente los datos del Prestamo que Ud. acaba de ingresar", vbInformation, "sistema de Biblioteca"cmdregprest.Enabled = FalseEnd Sub

Private Sub cmdvisualusu_Click()Set rsprestamo = New ADODB.Recordsetsql = "Select codprestamo,apellidos,nombres,nomTitulo,Fechaprestamo,fechadevol FROM ( Prestamo inner join usuario on [prestamo].[Nmatricula]=[Usuario].[Nmatricula]) inner join titulo on prestamo.Codtitulo=titulo.Codtitulo"rsprestamo.Open sql, cn, adOpenKeyset, adLockPessimisticSet rptprestamo.DataSource = rsprestamorptprestamo.ShowEnd Sub

Private Sub Form_Activate()txtmatri.SetFocuscmdregprest.Enabled = FalseEnd SubPrivate Sub Form_Load()fecha = DateHora = (Time)Hora2 = (Time)End SubPrivate Sub optcodigo_Click() Select Case KeyAscii Case 48 To 57 Case 8 Case Else KeyAscii = 0 End Select txtdatos.SetFocusEnd SubPrivate Sub optitulo_Click()txtdatos.SetFocusEnd SubPrivate Sub Txtcomprobante_KeyPress(KeyAscii As Integer)Select Case KeyAscii Case 48 To 57 Case 77 Case 8, 32 Case Else KeyAscii = 0 End SelectEnd Sub

Private Sub txtmatri_KeyPress(KeyAscii As Integer)Select Case KeyAscii

Case 48 To 57 Case 77 Case 8, 32 Case Else KeyAscii = 0 End SelectEnd Sub