El documento describe un sistema de administración de una tienda de repuestos de vehículos. Incluye clases para el inicio de sesión, menú principal y mantenimiento de clientes. Los usuarios pueden iniciar sesión como administrador, operario o mecánico y acceder a funciones específicas. El menú principal permite navegar entre opciones como clientes, empleados, vehículos y generar reportes. La clase de mantenimiento de clientes incluye funciones para limpiar y cargar datos en el formulario y la grilla de datos.

1. Imports System.Data.SqlClient
Module ModulePerfil
Public Perfil As String
End Module
Imports System.Data.SqlClient
Module ModuleUsuario
Public Usuario As String
End Module
Imports System.Data.SqlClient
Public Class Login
Dim intento As Integer
Private Sub Login_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
Call Limpiar()
End Sub
Private Sub Limpiar()
TextBoxUsuario.Clear()
TextBoxPassword.Clear()
TextBoxUsuario.Focus()
End Sub
Private Sub ButtonEntrar_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonEntrar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("Select nom_usuario, password,tipo
from Usuarios where nom_usuario= '" & TextBoxUsuario.Text.Trim & "' and
password= '" & TextBoxPassword.Text.Trim & "'", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dsdatos As New DataSet
Try
conexion.Open()
adaptador.Fill(dsdatos, "Usuarios")
If dsdatos.Tables("Usuarios").Rows.Count > 0 Then
Dim tipodeusuario As String =
dsdatos.Tables("Usuarios").Rows(0)("tipo")
If tipodeusuario = "administrador" Then
Usuario = TextBoxUsuario.Text
Perfil = "administrador"
Me.Hide()
Dim menu As New MenuPrincipal
menu.Show()
End If
If tipodeusuario = "operario" Then

2. Usuario = TextBoxUsuario.Text
Perfil = "operario"
Me.Hide()
Dim menu As New MenuPrincipal
menu.Show()
End If
If tipodeusuario = "mecanico" Then
Usuario = TextBoxUsuario.Text
Perfil = "mecanico"
Me.Hide()
Dim menu As New MenuPrincipal
menu.Show()
End If
Else
intento = intento + 1
If intento <= 2 Then
MessageBox.Show("Usuario y/o password incorrectos,
solo 3 intentos " & intento & " intento")
Call Limpiar()
End If
If intento = 3 Then
MessageBox.Show("No hay mas intentos " & intento & "
BYEEEEEEEE")
Me.Close()
End If
End If
Catch ex As Exception
MessageBox.Show("ERROR LOGIN: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
End Sub
End Class
Imports System.Data.SqlClient
Public Class MenuPrincipal
Private Sub MenuPrincipal_Load(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
LabelUsuario.Text = Usuario
If Perfil = "mecanico" Then
ClientesToolStripMenuItem.Enabled = False
EmpleadosToolStripMenuItem.Enabled = False
ClientesToolStripMenuItem1.Enabled = False
EmpleadosToolStripMenuItem1.Enabled = False
VehiculosToolStripMenuItem1.Enabled = False
ReporteClientesToolStripMenuItem2.Enabled = False

3. ReporteEmpleadosToolStripMenuItem2.Enabled = False
FacturaToolStripMenuItem.Enabled = False
End If
If Perfil = "operario" Then
ClientesToolStripMenuItem.Enabled = False
EmpleadosToolStripMenuItem.Enabled = False
ClientesToolStripMenuItem1.Enabled = False
EmpleadosToolStripMenuItem1.Enabled = False
ReporteClientesToolStripMenuItem2.Enabled = False
ReporteEmpleadosToolStripMenuItem2.Enabled = False
FacturaToolStripMenuItem.Enabled = False
End If
End Sub
Private Sub SalirDelSistemaToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
SalirDelSistemaToolStripMenuItem.Click
Me.Close()
End Sub
Private Sub ClientesToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ClientesToolStripMenuItem.Click
Me.Hide()
Dim consulta_clientes As New ConsultaClientes
consulta_clientes.Show()
End Sub
Private Sub EmpleadosToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
EmpleadosToolStripMenuItem.Click
Me.Hide()
Dim consulta_empleados As New ConsultaEmpleados
consulta_empleados.Show()
End Sub
Private Sub VehiculosToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
VehiculosToolStripMenuItem.Click
Me.Hide()
Dim consulta_vehiculo As New ConsultaVehiculos
consulta_vehiculo.Show()
End Sub
Private Sub ClientesToolStripMenuItem1_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ClientesToolStripMenuItem1.Click
Me.Hide()
Dim mantenimiento_clientes As New MantenimientoClientes
mantenimiento_clientes.Show()
End Sub

4. Private Sub EmpleadosToolStripMenuItem1_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
EmpleadosToolStripMenuItem1.Click
Me.Hide()
Dim mantenimiento_empleados As New MantenimientoEmpleados
mantenimiento_empleados.Show()
End Sub
Private Sub VehiculosToolStripMenuItem1_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
VehiculosToolStripMenuItem1.Click
Me.Hide()
Dim mantenimiento_vehiculos As New MantenimientoVehiculos
mantenimiento_vehiculos.Show()
End Sub
Private Sub CambioDeContraseñaToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
CambioDeContraseñaToolStripMenuItem.Click
Me.Hide()
Dim cambio_contraseña As New CambioContraseña
cambio_contraseña.Show()
End Sub
Private Sub BlockDeNotasToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
BlockDeNotasToolStripMenuItem.Click
System.Diagnostics.Process.Start("notepad.exe")
End Sub
Private Sub CalculadoraToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
CalculadoraToolStripMenuItem.Click
System.Diagnostics.Process.Start("calc.exe")
End Sub
Private Sub CorreoToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
CorreoToolStripMenuItem.Click
System.Diagnostics.Process.Start("msimn.exe")
End Sub
Private Sub MSNToolStripMenuItem_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MSNToolStripMenuItem.Click
System.Diagnostics.Process.Start("msnmsgr.exe")
End Sub
Private Sub ReporteClientesToolStripMenuItem2_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ReporteClientesToolStripMenuItem2.Click
Me.Hide()
Dim reporte_clientes As New ReporteClientes
reporte_clientes.Show()

5. End Sub
Private Sub ReporteEmpleadosToolStripMenuItem2_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ReporteEmpleadosToolStripMenuItem2.Click
Me.Hide()
Dim reporte_empleados As New ReporteEmpleados
reporte_empleados.Show()
End Sub
Private Sub ReporteVehículosToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ReporteVehículosToolStripMenuItem.Click
Me.Hide()
Dim reporte_vehiculos As New ReporteVehiculos
reporte_vehiculos.Show()
End Sub
Private Sub ContenidoDelSistemaToolStripMenuItem_Click(ByVal sender
As System.Object, ByVal e As System.EventArgs) Handles
ContenidoDelSistemaToolStripMenuItem.Click
End Sub
Private Sub AcercaDeToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
AcercaDeToolStripMenuItem.Click
End Sub
Private Sub FacturaToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
FacturaToolStripMenuItem.Click
Me.Hide()
Dim transaccion_factura As New TransaccionFactura
transaccion_factura.Show()
End Sub
Private Sub AticulosToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
AticulosToolStripMenuItem.Click
Me.Hide()
Dim consulta_articulos As New ConsultaArticulos
consulta_articulos.Show()
End Sub
End Class
Imports System.Data
Imports System.Data.SqlClient

6. Public Class MantenimientoClientes
Private Sub ButtonVolver_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonVolver.Click
Me.Hide()
Dim menu As New MenuPrincipal
menu.Show()
End Sub
Private Sub MantenimientoClientes_Load(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
LabelUsuario.Text = usuario
Call Limpiar()
Call CargarDatosNavegador()
Call CargarDatosDataGrid()
End Sub
Private Sub Limpiar()
TextBoxRut.Clear()
TextBoxNombre.Clear()
TextBoxEmail.Clear()
TextBoxPais.Clear()
TextBoxTelefono.Clear()
TextBoxEmail.Clear()
TextBoxCiudad.Clear()
TextBoxSexo.Clear()
TextBoxRut.Focus()
End Sub
Private Sub CargarDatosNavegador()
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("Select * from Clientes", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
adaptador.Fill(dset, "Clientes")
BindingSource1.DataSource = dset 'datasource: obtiene o
establece el origen de lo datos con q enlazar el conector
BindingSource1.DataMember = dset.Tables(0).ToString 'obtiene
o establece
' la lista concreta del origen de los datos con la q esta
enlazada en este
'momento
BindingNavigator1.BindingSource = BindingSource1
TextBoxRut.DataBindings.Add("Text", BindingSource1,
"rut_cli")
TextBoxNombre.DataBindings.Add("Text", BindingSource1,
"nom_cli")

7. TextBoxCiudad.DataBindings.Add("Text", BindingSource1,
"ciudad_cli")
TextBoxTelefono.DataBindings.Add("Text", BindingSource1,
"tel_cli")
TextBoxSexo.DataBindings.Add("Text", BindingSource1,
"sexo_cli")
TextBoxPais.DataBindings.Add("Text", BindingSource1,
"pais_cli")
TextBoxEmail.DataBindings.Add("Text", BindingSource1,
"email_cli")
Catch ex As Exception
MessageBox.Show("ERROR CARGAR NAVEGADOR: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
End Sub
Private Sub CargarDatosDataGrid()
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("Select * from Clientes", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
adaptador.Fill(dset, "Clientes")
DataGridView1.DataSource = dset
DataGridView1.DataMember = dset.Tables(0).ToString
Catch ex As Exception
MessageBox.Show("ERROR CARGAR GRID VIEW: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
End Sub
Private Sub ButtonIngresar_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles ButtonIngresar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("insert into Clientes values('" &
TextBoxRut.Text.Trim & "','" & TextBoxNombre.Text.Trim & "', '" &
TextBoxCiudad.Text.Trim & "','" &
Integer.Parse(TextBoxTelefono.Text.Trim) & "','" & TextBoxSexo.Text.Trim
& "', '" & TextBoxEmail.Text.Trim & "','" & TextBoxPais.Text.Trim & "')
", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
If comando.ExecuteNonQuery > 0 Then

8. MessageBox.Show("Ingreso Exitoso")
Else
MessageBox.Show("Error al Ingresar")
End If
Catch ex As Exception
MessageBox.Show("ERROR INGRESAR CLIENTES: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
Call CargarDatosNavegador()
Call CargarDatosDataGrid()
Call Limpiar()
End Sub
Private Sub ButtonBuscar_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonBuscar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("select * from Clientes where
rut_cli = '" & TextBoxRut.Text.Trim & "' ", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Dim dreader As SqlDataReader 'para trabajar de forma conectada
con la bd. recibe los registros
Try
conexion.Open()
dreader = comando.ExecuteReader 'se guardan los datos en el
dr
If dreader.Read = True Then
TextBoxNombre.Text = dreader("nom_cli")
TextBoxCiudad.Text = dreader("ciudad_cli")
TextBoxTelefono.Text = dreader("tel_cli")
TextBoxSexo.Text = dreader("sexo_cli")
TextBoxEmail.Text = dreader("email_cli")
TextBoxPais.Text = dreader("pais_cli")
Else
MessageBox.Show("Problemas al Buscar")
End If
Catch ex As Exception
MessageBox.Show("ERROR BUSQUEDA CLIENTES: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
Call CargarDatosNavegador()
Call CargarDatosDataGrid()
Call Limpiar()
End Sub

9. Private Sub ButtonLimpiar_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles ButtonLimpiar.Click
Call Limpiar()
End Sub
Private Sub ButtonEliminar_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles ButtonEliminar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("delete from Clientes where
rut_cli='" & TextBoxRut.Text.Trim & "' ", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
If comando.ExecuteNonQuery > 0 Then
MessageBox.Show("Eliminacion Exitosa")
Else
MessageBox.Show("Error al Eliminar")
End If
Catch ex As Exception
MessageBox.Show("ERROR ELIMINAR CLIENTES: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
Call CargarDatosNavegador()
Call CargarDatosDataGrid()
Call Limpiar()
End Sub
Private Sub ButtonActualizar_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles ButtonActualizar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("update Clientes set nom_cli='" &
TextBoxNombre.Text.Trim & "', ciudad_cli='" & TextBoxCiudad.Text.Trim &
"',tel_cli='" & Integer.Parse(TextBoxTelefono.Text.Trim) & "',sexo_cli='"
& TextBoxSexo.Text.Trim & "', email_cli='" & TextBoxEmail.Text.Trim &
"',pais_cli='" & TextBoxPais.Text.Trim & "' where rut_cli= '" &
TextBoxRut.Text.Trim & "' ", conexion)
Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
If comando.ExecuteNonQuery > 0 Then
MessageBox.Show("Actualizacion Exitosa")
Else
MessageBox.Show("Error al Actualizar")
End If
Catch ex As Exception

10. MessageBox.Show("ERROR ACTUALIZAR CLIENTES: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
Call CargarDatosNavegador()
Call CargarDatosDataGrid()
Call Limpiar()
End Sub
End Class
Imports System.Data.SqlClient
Public Class ConsultaClientes
Dim campo As String
Dim nombreCampo As String
Private Sub ConsultaClientes_Load(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
Call limpiar()
End Sub
Private Sub Limpiar()
TextBox2.Clear()
TextBox2.Focus()
End Sub
Private Sub ConsultaClientes_MouseMove(ByVal sender As Object, ByVal
e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseMove
If radiobuttonRut.Checked = True Then
campo = "rut_cli"
nombreCampo = "rut"
End If
If RadiobuttonNombre.Checked = True Then
campo = "nom_cli"
nombreCampo = "nombre"
End If
If RadiobuttonCiudad.Checked = True Then
campo = "ciudad_cli"
nombreCampo = "ciudad"
End If
If RadiobuttonPais.Checked = True Then
campo = "pais_cli"
nombreCampo = "pais"
End If
Label1.Text = "Ingrese " & nombreCampo & " a buscar:"
End Sub
Private Sub ButtonVolver_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonVolver.Click

11. Me.Hide()
Dim menu As New MenuPrincipal
menu.Show()
End Sub
Private Sub ButtonBuscar_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonBuscar.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("Select * from Clientes where " &
campo.Trim & " like '" & TextBox2.Text.Trim & "%'", conexion)
Dim adaptador As New SqlDataAdapter(comando) 'representa un conj.
de comandos de datos y una conexion a Bd para poder llenar un dataset
Dim dset As New DataSet ' representa una tabla virtual
Try
If TextBox2.Text = "" Then
Label1.Text = "Ingrese " & nombreCampo & " a buscar:"
TextBox2.Focus()
Else
conexion.Open()
adaptador.Fill(dset, "Clientes")
DataGrid1.DataSource = dset
DataGrid1.DataMember = dset.Tables(0).ToString
End If
Catch ex As Exception
MessageBox.Show("ERROR CARGAR GRID CONSULTAR CLIENTES: " &
ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
End Sub
Private Sub ButtonLimpiar_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles ButtonLimpiar.Click
Call Limpiar()
End Sub
End Class
Imports System.Data.SqlClient
Public Class ReporteClientes
Private Sub ButtonReporte_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles ButtonReporte.Click
Dim conexion As New SqlConnection("Data
Source=(local)SQLEXPRESS;Initial Catalog=Safito;Integrated
Security=True")
Dim comando As New SqlCommand("select * from Clientes", conexion)

12. Dim adaptador As New SqlDataAdapter(comando)
Dim dset As New DataSet
Try
conexion.Open()
adaptador.Fill(dset, "Clientes")
Dim reporte As New ReportClientes 'nombre del .rpt
reporte.SetDataSource(dset.Tables("Clientes"))
CrystalReportViewer1.ReportSource = reporte
Catch ex As Exception
MessageBox.Show("ERROR REPORTE CLIENTES: " & ex.Message)
End Try
conexion.Close()
comando.Dispose()
conexion.Dispose()
End Sub
Private Sub ReporteClientes_Load(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
LabelUsuario.Text = Usuario
End Sub
Private Sub ButtonVolver_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ButtonVolver.Click
Dim menu As New MenuPrincipal
Me.Hide()
menu.Show()
End Sub
End Class