Muy Buenas a todos y todas!!!
Seguimos trabajando en Visual Basic 6.0 y ahora le toca el turno a las bases de datos.
Para ello he utilizado las bases de datos Access, el complemento ADODB, un DataGrid, un Common Dialog Control y un PictureBox; Todos ellos los están en el apartado "Complementos".
El ejemplo es sencillo con unos pocos campos para el nombre, Apellidos y el nombre de la imagen que aparerá en un PictureBox.
La imagen se puede seleccionar en cualquier carpeta y al guardar el registro se copiara automáticamente a la carpeta \picture del path principal en el que tenemos copiada la carpeta principal del programa.
Para que la opción de copiar funcione correctamente, hay que seleccionar en el apartado /Proyecto/Referencias la referencia a "Microsoft Scripting Runtime". Con eso funcionara perfectamente. (En el ejemplo para descargar la referencia ya esta activada)
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| Proyectos\Referencias |
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| Referencia Microsoft Scripting Runtime |
Espero que este ejemplo le sirva a alguien para algún proyecto además siempre se puede mejorar ;-)
VERSION 5.00
Begin VB.Form Form1
BorderStyle = 1 'Fixed Single
Caption = "Base de datos Access con DataGrid "
ClientHeight = 5085
ClientLeft = 45
ClientTop = 375
ClientWidth = 8490
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 5085
ScaleWidth = 8490
StartUpPosition = 3 'Windows Default
Begin MSComDlg.CommonDialog CDialog
Left = 8400
Top = 2760
_ExtentX = 847
_ExtentY = 847
_Version = 393216
End
Begin MSAdodcLib.Adodc Adodc1
Height = 495
Left = 8520
Top = 2520
Width = 1200
_ExtentX = 2117
_ExtentY = 873
ConnectMode = 0
CursorLocation = 3
IsolationLevel = -1
ConnectionTimeout= 15
CommandTimeout = 30
CursorType = 3
LockType = 3
CommandType = 8
CursorOptions = 0
CacheSize = 50
MaxRecords = 0
BOFAction = 0
EOFAction = 0
ConnectStringType= 1
Appearance = 1
BackColor = -2147483643
ForeColor = -2147483640
Orientation = 0
Enabled = -1
Connect = ""
OLEDBString = ""
OLEDBFile = ""
DataSourceName = ""
OtherAttributes = ""
UserName = ""
Password = ""
RecordSource = ""
Caption = "Adodc1"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
_Version = 393216
End
Begin VB.CommandButton cmdDelete
Caption = "&Eliminar"
Height = 300
Left = 2880
TabIndex = 12
Top = 2880
Width = 975
End
Begin VB.CommandButton cmdGuardar
Caption = "&Guardar"
Height = 300
Left = 1560
TabIndex = 11
Top = 2880
Width = 975
End
Begin VB.CommandButton cmdClose
Caption = "&Cerrar"
Height = 300
Left = 4200
TabIndex = 10
Top = 2880
Width = 975
End
Begin VB.CommandButton Cmdnuevo
Caption = "&Nuevo"
Height = 300
Left = 240
TabIndex = 9
Top = 2880
Width = 975
End
Begin VB.CommandButton Cmdcargar
Caption = "&Cargar imagen"
Height = 300
Left = 6240
TabIndex = 8
Top = 2880
Width = 1215
End
Begin VB.PictureBox Picture1
Appearance = 0 'Flat
BackColor = &H80000005&
ForeColor = &H80000008&
Height = 2535
Left = 5280
ScaleHeight = 2505
ScaleWidth = 2985
TabIndex = 7
Top = 240
Width = 3015
End
Begin VB.TextBox Text1
BeginProperty Font
Name = "MS Sans Serif"
Size = 9.75
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 2
Left = 2040
TabIndex = 6
Top = 2160
Width = 3015
End
Begin VB.TextBox Text1
BeginProperty Font
Name = "MS Sans Serif"
Size = 9.75
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 1
Left = 2040
TabIndex = 5
Top = 1320
Width = 3015
End
Begin VB.TextBox Text1
BeginProperty Font
Name = "MS Sans Serif"
Size = 9.75
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 0
Left = 2040
TabIndex = 4
Top = 360
Width = 3015
End
Begin MSDataGridLib.DataGrid DataGrid1
Height = 1455
Left = 360
TabIndex = 0
Top = 3480
Width = 7935
_ExtentX = 13996
_ExtentY = 2566
_Version = 393216
HeadLines = 1
RowHeight = 15
BeginProperty HeadFont {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
ColumnCount = 2
BeginProperty Column00
DataField = ""
Caption = ""
BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED}
Type = 0
Format = ""
HaveTrueFalseNull= 0
FirstDayOfWeek = 0
FirstWeekOfYear = 0
LCID = 3082
SubFormatType = 0
EndProperty
EndProperty
BeginProperty Column01
DataField = ""
Caption = ""
BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED}
Type = 0
Format = ""
HaveTrueFalseNull= 0
FirstDayOfWeek = 0
FirstWeekOfYear = 0
LCID = 3082
SubFormatType = 0
EndProperty
EndProperty
SplitCount = 1
BeginProperty Split0
BeginProperty Column00
EndProperty
BeginProperty Column01
EndProperty
EndProperty
End
Begin VB.Label Label1
Caption = "Nombre Foto:"
BeginProperty Font
Name = "MS Sans Serif"
Size = 12
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 2
Left = 240
TabIndex = 3
Top = 2160
Width = 1815
End
Begin VB.Label Label1
Caption = "Apellidos:"
BeginProperty Font
Name = "MS Sans Serif"
Size = 12
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 1
Left = 720
TabIndex = 2
Top = 1320
Width = 1215
End
Begin VB.Label Label1
Caption = "Nombre:"
BeginProperty Font
Name = "MS Sans Serif"
Size = 12
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Index = 0
Left = 960
TabIndex = 1
Top = 360
Width = 1095
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim A As New Scripting.FileSystemObject
Dim Cn As New ADODB.Connection
Dim Rs As New ADODB.Recordset
Dim X As String
Dim Cuenta As Integer
Private Sub cmdClose_Click()
End
End Sub
'----BOTON GUARDAR----
Private Sub cmdGuardar_Click()
If Text1(0).Text = "" Or Text1(1).Text = "" Or Text1(2).Text = "" Then
MsgBox "Por favor Rellene todos los campos"
Call clear
Else
Call Asignar_Datos
Rs.Update
Call Visualizar_Datos
Cmdnuevo.Enabled = True
cmdDelete.Enabled = True
End If
A.CopyFile CDialog.FileName, App.Path & "\picture\" & CDialog.FileTitle
Call Carga_Imagenes
End Sub
'----BOTON PARA CARGAR IMAGENES-----
Private Sub Cmdcargar_Click()
CDialog.ShowOpen
Picture1.Picture = LoadPicture(CDialog.FileName)
Text1(2).Text = CDialog.FileTitle
If Text1(2).Text = "" Then
MsgBox "seleccione una imagen"
Else
Text1(2).Text = CDialog.FileTitle
End If
End Sub
'-----BOTON ELIMINAR-----
Private Sub cmdDelete_Click()
On Error Resume Next
If Rs.RecordCount = 1 Then
MsgBox "No se puede eliminar el último registro, Por favor modifiquelo y pulse Guardar"
Else
With DataGrid1
If MsgBox("Se va a eliminar el registro : ¿Está seguro? ", _
vbExclamation + vbYesNo, "Eliminar") = vbYes Then
Rs.Delete
' Actualiza el recordset
Rs.Update
DataGrid1.Refresh
End If
End With
' muestra los datos en los textbox
Call Visualizar_Datos
Call Carga_Imagenes
' si elrecordset llegó al final se posiciona en el último
If Rs.EOF Then
Rs.MoveFirst
Call Visualizar_Datos
Call Carga_Imagenes
'MsgBox " Ultimo registro ", vbInformation
End If
If Text1(2).Text = "" Then
Text1(2).Text = "Nopicture.jpg"
Call Carga_Imagenes
End If
End If
If Err Then
MsgBox "No se puede borrar registro"
End If
End Sub
'-----BOTON NUEVO-----
Private Sub Cmdnuevo_Click()
Call clear
Cmdnuevo.Enabled = False
cmdDelete.Enabled = False
Rs.AddNew
Text1(2).Text = "Nopicture.jpg"
Call Carga_Imagenes
Text1(0).SetFocus
End Sub
Private Sub Form_Load()
Cn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\bd1.mdb" & ";Persist Security Info=False"
Rs.Source = "Agenda"
Rs.CursorType = adOpenKeyset
Rs.LockType = adLockOptimistic
Rs.CursorLocation = adUseClient
Rs.Open "select * from Agenda", Cn, 3, 3 ' adOpenDynamic, adLockOptimistic
Dim Rs2 As New ADODB.Recordset
Set Rs2 = New ADODB.Recordset
Call Visualizar_Datos
If Text1(2).Text = "" Then
Text1(2).Text = "Nopicture.jpg"
End If
Call Carga_Imagenes
Call Cargar_data(DataGrid1)
With DataGrid1
.AllowUpdate = False
.Width = 7800
.Columns(0).Width = 2300
.Columns(1).Width = 3600
.Columns(2).Width = 1560
End With
End Sub
Private Sub DataGrid1_HeadClick(ByVal ColIndex As Integer)
With Rs
If (.Sort = .Fields(ColIndex).[Name] & " Asc") Then
.Sort = .Fields(ColIndex).[Name] & " Desc"
Else
.Sort = .Fields(ColIndex).[Name] & " Asc"
End If
End With
End Sub
'Abre el formulario para Editar el registro seleccionado
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub Editar()
Dim i As Integer
If DataGrid1.Row = -1 Then Exit Sub
Call Visualizar_Datos
Call Carga_Imagenes
DataGrid1.Refresh
End Sub
Private Sub datagrid1_DblClick()
Call Editar
End Sub
' Sub que carga los datos del recordset y los asigna a los textbox
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub Visualizar_Datos()
On Error Resume Next
Text1(0).Text = Rs.Fields("Nombre")
Text1(1).Text = Rs.Fields("Apellidos")
If Text1(2).Text = "" Then Text1(2).Text = "nopicture.jpg"
Text1(2).Text = Rs.Fields("imagen")
End Sub
' Sub que asigna los datos al recordset
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub Asignar_Datos()
If Rs.EOF Then
Rs.MoveLast
End If
Rs.Fields("Nombre") = Text1(0).Text
Rs.Fields("Apellidos") = Text1(1).Text
Rs.Fields("imagen") = Text1(2).Text
End Sub
' Limpia las cajas de texto
Private Sub clear()
Text1(0).Text = "Nombre"
Text1(1).Text = "Apellidos"
Text1(2).Text = "Nopicture.jpg"
End Sub
Private Sub Carga_Imagenes()
On Error Resume Next
X = App.Path
Picture1.Picture = LoadPicture(X & "\picture\" & Text1(2).Text)
If Err Then
MsgBox "Se ha producido un error al cargar la Imagen. Esta la imagen en la carpeta?"
If Text1(2).Text = "" Then
Text1(2).Text = "Nopicture.jpg"
End If
End If
End Sub
Private Sub Cargar_data(Dg As DataGrid)
Dg.MarqueeStyle = dbgHighlightRow
Set Dg.DataSource = Rs
Dg.Refresh
End Sub
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Nos vemos en el próximo artículo, saludos!!!
