VB NET 2010

Lenguaje de Programación Visual
Diseñar el siguiente formulario
Crear el siguiente Modulo
Module Variables
'Para los productos
Public Codigo As String
Public Descripcion As String
Public Precio As Double
Public Stock As Integer
Public Saldo As Integer
Public Fecha As Date
End Module
Codificar
Imports System.Data.OleDb
Public Class FrmProductos
Dim cn As OleDbConnection
Dim ds As DataSet
Dim daProducto As OleDbDataAdapter
Private Sub FrmProductos_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
cn = New OleDbConnection("PROVIDER=Microsoft.jet.oledb.4.0;DATA Source=ALMACEN_KIMAM.mdb")
cn.Open()
ds = New DataSet()
daProducto = New OleDbDataAdapter("Select * From Articulos", cn)
daProducto.Fill(ds, "Articulos")
cn.Close()
Ing. Henry Marcial Arévalo Flores
Página 1
' mostramos los registros en las cajas de texto
Me.TxtCodigo.DataBindings.Add("Text", ds, "Articulos.IdArticulo")
Me.TxtDescripcion.DataBindings.Add("Text", ds, "Articulos.DescripcionArt")
Me.TxtPrecio.DataBindings.Add("Text", ds, "Articulos.PrecioArt")
Me.TxtStock.DataBindings.Add("Text", ds, "Articulos.Stock")
Me.TxtSaldo.DataBindings.Add("Text", ds, "Articulos.Saldo")
Me.DTPFecha.DataBindings.Add("Text", ds, "Articulos.FechaArt")
End Sub
Private Sub BtnSiguiente_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSiguiente.Click
If Me.BindingContext(ds, "Articulos").Position < Me.ds.Tables("Articulos").Rows.Count - 1 Then
Me.BindingContext(ds, "Articulos").Position = (Me.BindingContext(ds, "Articulos").Position + 1)
Else
''
End If
End Sub
Private Sub BtnAnterior_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnAnterior.Click
If Me.BindingContext(ds, "Articulos").Position > 0 Then
Me.BindingContext(ds, "Articulos").Position = (Me.BindingContext(ds, "Articulos").Position - 1)
Else
''
End If
End Sub
Private Sub BtnPrimero_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnPrimero.Click
Me.BindingContext(ds, "Articulos").Position = 0
End Sub
Private Sub BtnUltimo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnUltimo.Click
Me.BindingContext(ds, "Articulos").Position = (ds.Tables("Articulos").Rows.Count - 1)
End Sub
Private Sub BtnNuevo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnNuevo.Click
Me.TxtCodigo.Text = String.Empty
Me.TxtDescripcion.Text = String.Empty
Me.TxtPrecio.Text = String.Empty
Me.TxtStock.Text = String.Empty
Me.TxtSaldo.Text = String.Empty
Me.TxtCodigo.Focus()
End Sub
Private Sub BtnModificar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnModificar.Click
cn = New OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=ALMACEN_KIMAM.mdb")
cn.Open()
Dim cmd As OleDbCommand
Codigo = TxtCodigo.Text.Trim()
Descripcion = TxtDescripcion.Text.Trim()
Precio = Double.Parse(TxtPrecio.Text.Trim())
Stock = Integer.Parse(TxtStock.Text.Trim())
Saldo = Integer.Parse(TxtSaldo.Text.Trim())
Fecha = Date.Parse(DTPFecha.Text.Trim())
cmd = New OleDbCommand("UPDATE articulos SET
idarticulo=@idarticulo,descripcionart=@descripcion,precioart=@precio,stock=@stock,saldo=@saldo,fechaart=@fecha
WHERE idarticulo=@idarticulo")
cmd.Parameters.Add("@idarticulo", OleDbType.VarChar)
cmd.Parameters("@idarticulo").Value = Codigo
Lenguaje de Programación Visual
cmd.Parameters.Add("@descripcion", OleDbType.VarChar)
cmd.Parameters("@descripcion").Value = Descripcion
cmd.Parameters.Add("@precio", OleDbType.Double)
cmd.Parameters("@precio").Value = Precio
cmd.Parameters.Add("@stock", OleDbType.Integer)
cmd.Parameters("@stock").Value = Stock
cmd.Parameters.Add("@saldo", OleDbType.Integer)
cmd.Parameters("@saldo").Value = Saldo
cmd.Parameters.Add("@fecha", OleDbType.Date)
cmd.Parameters("@fecha").Value = Fecha
cmd.Connection = cn
If (MessageBox.Show("Está seguro que desea modificar?", "Mensaje", MessageBoxButtons.YesNo,
MessageBoxIcon.Question) = Windows.Forms.DialogResult.Yes) Then
cmd.ExecuteNonQuery()
End If
cn.Close()
End Sub
Private Sub BtnGrabar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnGrabar.Click
cn = New OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=ALMACEN_KIMAM.mdb")
cn.Open()
Dim cmd As OleDbCommand
Codigo = TxtCodigo.Text.Trim()
Descripcion = TxtDescripcion.Text.Trim()
Precio = Double.Parse(TxtPrecio.Text.Trim())
Stock = Integer.Parse(TxtStock.Text.Trim())
Saldo = Integer.Parse(TxtSaldo.Text.Trim())
Fecha = Date.Parse(Me.DTPFecha.Text.Trim())
cmd = New OleDbCommand("INSERT INTO articulos VALUES
(@idarticulo,@descripcion,@precio,@stock,@saldo,@fecha)")
cmd.Parameters.Add("@idarticulo", OleDbType.VarChar)
cmd.Parameters("@idarticulo").Value = Codigo
cmd.Parameters.Add("@descripcion", OleDbType.VarChar)
cmd.Parameters("@descripcion").Value = Descripcion
cmd.Parameters.Add("@precio", OleDbType.Double)
cmd.Parameters("@precio").Value = Precio
cmd.Parameters.Add("@stock", OleDbType.Integer)
cmd.Parameters("@stock").Value = Stock
cmd.Parameters.Add("@saldo", OleDbType.Integer)
cmd.Parameters("@saldo").Value = Saldo
cmd.Parameters.Add("@Fecha", OleDbType.Date)
cmd.Parameters("@fecha").Value = Fecha
cmd.Connection = cn
If (MessageBox.Show("Está seguro que desea grabar?", "Mensaje", MessageBoxButtons.YesNo,
MessageBoxIcon.Question) = Windows.Forms.DialogResult.Yes) Then
cmd.ExecuteNonQuery()
End If
cn.Close()
End Sub
Private Sub BtnEliminar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnEliminar.Click
'Dim cn As OleDbConnection
cn = New OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=ALMACEN_KIMAM.mdb")
cn.Open()
Dim cmd As OleDbCommand
Dim Idarticulo As String = TxtCodigo.Text.Trim()
cmd = New OleDbCommand("DELETE FROM articulos WHERE idarticulo=@idarticulo")
Ing. Henry Marcial Arévalo Flores
Página 3
cmd.Parameters.Add("@idarticulo", OleDbType.VarChar)
cmd.Parameters("@idarticulo").Value = Idarticulo
cmd.Connection = cn
If (MessageBox.Show("Está seguro que desea eliminar?", "Mensaje", MessageBoxButtons.YesNo,
MessageBoxIcon.Question) = Windows.Forms.DialogResult.Yes) Then
cmd.ExecuteNonQuery()
End If
If Me.BindingContext(ds, "Articulos").Position < Me.ds.Tables("Articulos").Rows.Count - 1 Then
Me.BindingContext(ds, "Articulos").Position = (Me.BindingContext(ds, "Articulos").Position + 1)
Else
''
End If
cn.Close()
End Sub
Private Sub BtnSalir_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSalir.Click
End
End Sub
Private Sub BtnBuscar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnBuscar.Click
Dim cn As OleDbConnection
cn = New OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=ALMACEN_KIMAM.mdb")
cn.Open()
dtA.Clear()
Dim Codigo As String = InputBox("Ingrese el código del producto a buscar: ")
ds = New DataSet()
daProducto = New OleDbDataAdapter("Select * From Articulos WHERE idarticulo='" & Codigo & "'", cn)
daProducto.Fill(dtA)
If (dtA.Rows.Count <> 0) Then
MessageBox.Show("Registro encontrado", "Mensaje", MessageBoxButtons.OK, MessageBoxIcon.Information)
Me.TxtCodigo.Text = dtA.Rows(0)(0).ToString
Me.TxtDescripcion.Text = dtA.Rows(0)(1).ToString
Me.TxtPrecio.Text = dtA.Rows(0)(2).ToString
Me.TxtStock.Text = dtA.Rows(0)(3).ToString
Me.TxtSaldo.Text = dtA.Rows(0)(4).ToString
Me.DTPFecha.Value = dtA.Rows(0)(5).ToString
Else
MessageBox.Show("Registro no encontrado", "Mensaje", MessageBoxButtons.OK, MessageBoxIcon.Information)
Me.BtnBuscar.Focus()
End If
cn.Close()
End Sub
End Class