By Carlos Castro

1. Public Class menuprin
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button1.Click
'Se compara si el control esta seleccionado
If RadioButton1.Checked Then
registro.Show()
Me.Hide()
End If
'Se compara si el control esta seleccionado
If RadioButton2.Checked Then
modificar.Show()
Me.Hide()
End If
'Se compara si la propiedad del control es verdadera
If RadioButton3.Checked = True Then
eliminar.Show()
Me.Hide()
End If
End Sub
End Class
Imports System.Data.SqlClient
Public Class registro
Private Sub VolverToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles VolverToolStripMenuItem.Click
menuprin.Show()
Me.Hide()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button1.Click
Dim conexion As New SqlConnection("Data Source=CASTROSQLEXPRESS;Initial
Catalog=prueba;Integrated Security=True")
Dim command As New SqlCommand("insertarusuario", conexion)
Dim adapter As New SqlDataAdapter("mostrarusuarios", conexion)
Dim datase As New DataSet
command.CommandType = Data.CommandType.StoredProcedure
command.Parameters.AddWithValue("@id", TextBox1.Text)
command.Parameters.AddWithValue("@nom", TextBox2.Text)
command.Parameters.AddWithValue("@ape", TextBox3.Text)
command.Parameters.AddWithValue("@telefo", TextBox4.Text)
Try
conexion.Open()
command.ExecuteNonQuery()
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
MsgBox("Usuario Registrado", vbInformation, "Sistema")
TextBox1.Text = ""
TextBox1.Enabled = "false"
TextBox2.Text = ""
TextBox2.Enabled = "false"
TextBox3.Text = ""
TextBox3.Enabled = "false"
TextBox4.Text = ""
TextBox4.Enabled = "false"
Button1.Enabled = "false"
Button2.Enabled = "true"
adapter.Fill(datase)

2. DataGridView1.DataSource = datase.Tables(0)
conexion.Close()
End Try
End Sub
Private Sub registro_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
MyBase.Load
Button2.Enabled = "false"
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button2.Click
TextBox1.Text = ""
TextBox1.Enabled = "true"
TextBox2.Text = ""
TextBox2.Enabled = "true"
TextBox3.Text = ""
TextBox3.Enabled = "true"
TextBox4.Text = ""
TextBox4.Enabled = "true"
Button1.Enabled = "true"
Button2.Enabled = "false"
End Sub
End Class
Imports System.Data.SqlClient
Public Class modificar
Dim Dato1, Dato2, Dato3, Dato4 As String
Private Sub VolverInicioToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles VolverInicioToolStripMenuItem.Click
menuprin.Show()
Me.Hide()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button1.Click
Dim conexion As New SqlConnection("Data Source=CASTROSQLEXPRESS;Initial
Catalog=prueba;Integrated Security=True")
Dim command As New SqlCommand("buscausuario", conexion)
Dim adapter As New SqlDataAdapter(command)
Dim datase As New DataSet
command.CommandType = Data.CommandType.StoredProcedure
command.Parameters.AddWithValue("@id", TextBox1.Text)
Try
conexion.Open()
command.ExecuteNonQuery()
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
TextBox1.Text = ""
Button2.Enabled = "true"
Button3.Enabled = "true"
adapter.Fill(datase)
DataGridView1.DataSource = datase.Tables(0)
conexion.Close()
End Try
End Sub
Private Sub Button2_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button2.Click
TextBox5.Enabled = "false"
TextBox4.Enabled = "true"

3. TextBox3.Enabled = "true"
TextBox2.Enabled = "true"
TextBox5.Text = Dato1
TextBox2.Text = Dato2
TextBox3.Text = Dato3
TextBox4.Text = Dato4
End Sub
Private Sub DataGridView1_MouseClick(ByVal sender As Object, ByVal e As
System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseClick
Dato1 = DataGridView1.CurrentRow.Cells(0).EditedFormattedValue.ToString
Dato2 = DataGridView1.CurrentRow.Cells(1).EditedFormattedValue.ToString
Dato3 = DataGridView1.CurrentRow.Cells(2).EditedFormattedValue.ToString
Dato4 = DataGridView1.CurrentRow.Cells(3).EditedFormattedValue.ToString
End Sub
Private Sub modificar_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
MyBase.Load
TextBox5.Enabled = "false"
TextBox4.Enabled = "false"
TextBox3.Enabled = "false"
TextBox2.Enabled = "false"
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button3.Click
Dim conexion As New SqlConnection("Data Source=CASTROSQLEXPRESS;Initial
Catalog=prueba;Integrated Security=True")
Dim command As New SqlCommand("modificarusuario", conexion)
Dim adapter As New SqlDataAdapter(command)
Dim datase As New DataSet
command.CommandType = Data.CommandType.StoredProcedure
command.Parameters.AddWithValue("@id", TextBox5.Text)
command.Parameters.AddWithValue("@nom", TextBox2.Text)
command.Parameters.AddWithValue("@ape", TextBox3.Text)
command.Parameters.AddWithValue("@telefo", TextBox4.Text)
Try
conexion.Open()
command.ExecuteNonQuery()
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
MsgBox("Usuario Actualizado", vbInformation, "Sistema")
TextBox2.Text = ""
TextBox2.Enabled = "false"
TextBox3.Text = ""
TextBox3.Enabled = "false"
TextBox4.Text = ""
TextBox4.Enabled = "false"
TextBox5.Text = ""
TextBox5.Enabled = "false"
Button3.Enabled = "false"
Button2.Enabled = "false"
adapter.Fill(datase)
DataGridView1.Columns.Clear()
conexion.Close()
End Try
End Sub
End Class
Imports System.Data.SqlClient
Public Class eliminar

4. Dim Dato1, Dato2, Dato3, Dato4 As String
Private Sub VolverInicioToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles VolverInicioToolStripMenuItem.Click
menuprin.Show()
Me.Hide()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button1.Click
Dim conexion As New SqlConnection("Data Source=CASTROSQLEXPRESS;Initial
Catalog=prueba;Integrated Security=True")
Dim command As New SqlCommand("buscausuario", conexion)
Dim adapter As New SqlDataAdapter(command)
Dim datase As New DataSet
command.CommandType = Data.CommandType.StoredProcedure
command.Parameters.AddWithValue("@id", TextBox1.Text)
Try
conexion.Open()
command.ExecuteNonQuery()
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
TextBox1.Text = ""
Button2.Enabled = "true"
Button3.Enabled = "true"
adapter.Fill(datase)
DataGridView1.DataSource = datase.Tables(0)
conexion.Close()
End Try
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button2.Click
TextBox5.Enabled = "false"
TextBox4.Enabled = "true"
TextBox3.Enabled = "true"
TextBox2.Enabled = "true"
TextBox5.Text = Dato1
TextBox2.Text = Dato2
TextBox3.Text = Dato3
TextBox4.Text = Dato4
End Sub
Private Sub DataGridView1_MouseClick(ByVal sender As Object, ByVal e As
System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseClick
Dato1 = DataGridView1.CurrentRow.Cells(0).EditedFormattedValue.ToString
Dato2 = DataGridView1.CurrentRow.Cells(1).EditedFormattedValue.ToString
Dato3 = DataGridView1.CurrentRow.Cells(2).EditedFormattedValue.ToString
Dato4 = DataGridView1.CurrentRow.Cells(3).EditedFormattedValue.ToString
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button3.Click
Dim conexion As New SqlConnection("Data Source=CASTROSQLEXPRESS;Initial
Catalog=prueba;Integrated Security=True")
Dim command As New SqlCommand("borrarusuario", conexion)
Dim adapter As New SqlDataAdapter(command)
Dim datase As New DataSet
command.CommandType = Data.CommandType.StoredProcedure

5. command.Parameters.AddWithValue("@id", TextBox5.Text)
command.Parameters.AddWithValue("@nom", TextBox2.Text)
command.Parameters.AddWithValue("@ape", TextBox3.Text)
command.Parameters.AddWithValue("@telefo", TextBox4.Text)
Try
conexion.Open()
command.ExecuteNonQuery()
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
MsgBox("Usuario Eliminado", vbInformation, "Sistema")
TextBox2.Text = ""
TextBox2.Enabled = "false"
TextBox3.Text = ""
TextBox3.Enabled = "false"
TextBox4.Text = ""
TextBox4.Enabled = "false"
TextBox5.Text = ""
TextBox5.Enabled = "false"
Button3.Enabled = "false"
Button2.Enabled = "false"
adapter.Fill(datase)
DataGridView1.Columns.Clear()
conexion.Close()
End Try
End Sub
End Class
ALTER PROCEDURE [dbo].[borrarusuario]
-- Add the parameters for the stored procedure here
(
@id nvarchar(3),
@nom nvarchar (50),
@ape nvarchar (50),
@telefo nvarchar(12)
)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
DELETE FROM usuario WHERE ide=@id and nombre=@nom and apellido=@ape and tel=@telefo
END
ALTER PROCEDURE [dbo].[buscausuario]
(
@id nvarchar(3)
)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT * FROM usuario WHERE ide=@id
ALTER PROCEDURE [dbo].[insertarusuario]
(
@id nvarchar(3),
@nom nvarchar(50),
@ape nvarchar(70),
@telefo nvarchar(15)
)
AS SET NOCOUNT ON

6. INSERT INTO usuario(ide, nombre, apellido, tel) VALUES (@id,@nom ,@ape,@telefo)
ALTER PROCEDURE [dbo].[modificarusuario]
(
@id nvarchar(3),
@nom nvarchar(50),
@ape nvarchar(50),
@telefo nvarchar(12)
)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
UPDATE usuario SET nombre=@nom, apellido=@ape, tel=@telefo WHERE ide=@id
ALTER PROCEDURE [dbo].[mostrarusuarios]
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT * FROM usuario