7/16/2019 AGREGAR,ACTUALIZAR,ELIMINAR Y MODIFICAR REGISTROS EN UN DATAGRIDVIEW-1.txt

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Option Explicit OnOption Strict On

' Espacios de nombres' '''''''''''''''''''''''''''''''''''''''''Imports System.Data.SqlClient

Public Class Form1

'BindingSourcePrivate WithEvents bs As New BindingSource

' Adaptador de datos sqlPrivate SqlDataAdapter As SqlDataAdapter

' Cadena de conexiónPrivate Const cs As String = "Data Source=SERVIDOR;" & _ 

"Initial Catalog=BASE DE DATOS;" & _ "User Id=USUARIO;Password=CLAVE"

' flagPrivate bEdit As Boolean

' actualizar los cambios al salir' ''''''''''''''''''''''''''''''''''''''''Private Sub Form1_FormClosing( _ 

ByVal sender As Object, _ ByVal e As System.Windows.Forms.FormClosingEventArgs)

TryIf bEdit Then

'preguntar si se desea guardarIf (MsgBox( _ 

"Guardar cambios ?", _ MsgBoxStyle.YesNo, _ 

"guardar")) = MsgBoxResult.Yes Then

Actualizar(False)End If

End IfCatch ex As Exception

MessageBox.Show(ex.Message)End Try

End Sub

Private Sub cargar_registros( _ 

ByVal sql As String, _ ByVal dv As DataGridView)

Try' Inicializar el SqlDataAdapter indicandole el comando y el connecti

on stringSqlDataAdapter = New SqlDataAdapter(sql, cs)

Dim SqlCommandBuilder As New SqlCommandBuilder(SqlDataAdapter)

7/16/2019 AGREGAR,ACTUALIZAR,ELIMINAR Y MODIFICAR REGISTROS EN UN DATAGRIDVIEW-1.txt

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' llenar el DataTableDim dt As New DataTable()SqlDataAdapter.Fill(dt)

' Enlazar el BindingSource con el datatable anterior' ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''bs.DataSource = dt

With dv.Refresh()' coloca el registro arriba de todo.FirstDisplayedScrollingRowIndex = bs.Position

End With

bEdit = False

Catch exSql As SqlExceptionMsgBox(exSql.Message.ToString)

Catch ex As ExceptionMsgBox(ex.Message.ToString)

End TryEnd Sub

' botón para guardar los cambios y llenar la grilla

Private Sub Button1_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btn_Update.ClickTry

Actualizar()Catch ex As Exception

MessageBox.Show(ex.Message)End Try

End Sub

' Eliminar el elemento actual del BindingSource y actualizarPrivate Sub btn_delete_Click( _ 

ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btn_delete.ClickTry

If Not bs.Current Is Nothing Then' eliminarbs.RemoveCurrent()

'Guardar los cambios y recargarActualizar()

ElseMsgBox("No hay un registro actual para eliminar", _ 

MsgBoxStyle.Exclamation, _ "Eliminar")

End IfCatch ex As Exception

MessageBox.Show(ex.Message)End Try

End Sub

Private Sub Actualizar(Optional ByVal bCargar As Boolean = True)' Actualizar y guardar cambiosTry

7/16/2019 AGREGAR,ACTUALIZAR,ELIMINAR Y MODIFICAR REGISTROS EN UN DATAGRIDVIEW-1.txt

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If Not bs.DataSource Is Nothing ThenSqlDataAdapter.Update(CType(bs.DataSource, DataTable))If bCargar Then

cargar_registros("" & TXT_FILTRO.Text & "", DataGridView1)End If

End IfCatch ex As Exception

MessageBox.Show(ex.Message)End Try

End Sub

Private Sub btn_first_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) _ 

Handles btn_first.Click, btn_last.Click, btn_next.Click, btn_Previous.Click

' Botones para moverse por los registros' '''''''''''''''''''''''''''''''''''''''''''''Try

If sender Is btn_Previous Thenbs.MovePrevious()

ElseIf sender Is btn_first Thenbs.MoveFirst()

ElseIf sender Is btn_next Thenbs.MoveNext()ElseIf sender Is btn_last Then

bs.MoveLast()End If

Catch ex As ExceptionMessageBox.Show(ex.Message)

End Try 

End Sub

Private Sub DataGridView1_CellEndEdit( _ 

ByVal sender As Object, _ ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _ Handles DataGridView1.CellEndEdit

bEdit = TrueEnd Sub

' nuevo registroPrivate Sub btn_new_Click( _ 

ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btn_new.ClickTry

bs.AddNew()

Catch ex As ExceptionMessageBox.Show(ex.Message)

End TryEnd Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

' propiedades del datagrid

7/16/2019 AGREGAR,ACTUALIZAR,ELIMINAR Y MODIFICAR REGISTROS EN UN DATAGRIDVIEW-1.txt

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' '''''''''''''''''''''''''''''''''''''Try

With DataGridView1' alternar color de filas.AlternatingRowsDefaultCellStyle.BackColor = Color.FloralWhite.DefaultCellStyle.BackColor = Color.Beige' Establecer el origen de datos para el DataGridview.DataSource = bs

End With

' botones' '''''''''''''''''''''''''''''''''''''btn_Update.Text = "Guardar cambios"btn_delete.Text = "Eliminar registro"btn_new.Text = "Nuevo"

btn_first.Text = "<<"btn_Previous.Text = "<"btn_next.Text = ">"btn_last.Text = ">>"

' cagar los datos' cargar_registros("Select * From dbo.inv_Articulos Order by CODIGO

", DataGridView1)

Catch ex As ExceptionMessageBox.Show(ex.Message)End Try

End Sub

Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Trycargar_registros("" & TXT_FILTRO.Text & "", DataGridView1)

Catch ex As ExceptionMessageBox.Show(ex.Message)

End TryEnd Sub

 End Class