Este um exemplo de CRUD completo e
funcional pode ser melhorado, e adaptado para outras aplicaçoes.
CRUD e um acronimo Create Read Update
e Delete, se trata de um aplicativo que faz uma interaçao com uma
Base de Dados, onde interagimos com o banco suas tabelas e registros,
cadastrando, modificando, excluindo ou apenas lendo seus dados.
CRUD EM GAMBAS ( VISUAL BASIC
MELHORADO)
' Gambas class file
'CRUD, LISTVIEW, LISTBOX, COMBOBOS,
STREAM, CONEXAO MYSQL
'AUTHOR EDSON PESSOTTI
'JUNHO/2016
''PRAMAÇAO VISUAL GAMBAS3
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''VARIAVEIS GLOBAIS
'''0-0--------0-0--
Public hFile As File
Public jog As String
Public pos As String
Public cam As Short
Public idx As Short
Public minhaSt As String
Public $cod As String
Public $nome As String
Public resultado As Result
Public Sub _new()
End
'iNICIALIZAÇAO-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-
''-0-0-0-
Public Sub Form_Open()
tb1.text = " "
tb2.text = " "
TB3.text = " "
TB4.text = " "
TB5.text = " "
'create the file if it does not exist,
otherwise just open it
If Exist(Application.path &
"/file.txt") Then
hFile = Open Application.path &
"/file.txt" For Write Append
Else
hFile = Open Application.path &
"/file.txt" For Write Create
Endif
End
'cARGA DO LISTBOX.
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-
Public Sub Button1_Click()
Dim pkey As Short = CInt(TB5.Text)
Dim lista As String
Module1.conex()
Module1.resultado = db.EXEC("
Select * From jogadores where id = &1 ", pkey)
tb1.Text = module1.resultado!jogador
tb2.text = module1.resultado!posicao
TB4.text = module1.resultado!camisa
TB5.text = module1.resultado!id
lista = "id--" & TB5.text
& "--Nome--" & TB1.text & "Posição--"
& tb2.text & "--camisa--" & TB4.text &
"--Time--" & TB3.text
LB1.Add(lista)
Module1.db.Close()
End
'
''MODULO DE NOVA INSERÇAO NO BANCO DE
DADOS
Public Sub Button2_Click()
jog = TB1.text
pos = TB2.text
cam = TB4.text
idx = CInt(TB5.text)
Module1.conex()
module1.db.EXEC("insert into
jogadores values(&1,&2,&3,&4)", jog, pos, cam,
idx)
' Module1.consulta2()
db.Close
End
Public Sub Button3_Click()
Dim tt As Integer = CInt(TB5.Text)
Module1.conex()
Module1.resultado = db.EXEC("delete
from jogadores where id=&1", tt)
End
'
''MODULO DE CARGA DO LISTVIEW
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Public Sub Button5_Click()
Dim a As String
Dim b As String
Dim c As String
Dim d As String
Dim x As Short
LV1.Clear()
' Dialog.Filter = ["*.lst",
"Lists", "*.txt", "Arquivos de texto",
"*", "All Files"]
' If Dialog.OpenFile() Then Return
'' Lb1.List =
Split(File.Load(Dialog.Path), "\\n")
'Catch
' Message.Info("Não é possível
carregar lista:\\n" & Dialog.Path & "\\n" &
Error.Text)
Module1.conex()
Module1.resultado = db.EXEC("Select
id ,jogador , posicao, camisa from jogadores")
For Each Module1.resultado
a = module1.resultado!jogador
b = module1.resultado!posicao
c = module1.resultado!camisa
d = module1.resultado!id
minhaSt = a & " -- " &
b & " -- " & c & " -- " & d
x = x + 1
With LV1
.Add(x, minhaSt)
End With
Next
db.Close
End
Public Sub CB1_Click()
TB3.text = CB1.current.text
End
'
''METODO DE CARGA DOS TEXTBOX COM DADOS
DO BANCO DE DADOS.
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0--0-0-0-0-0-
Public Sub Button7_Click()
Dim pkey As Short = CInt(TB5.Text)
tb1.text = " "
tb2.text = " "
TB4.text = " "
Module1.conex()
Module1.resultado = db.EXEC("
Select * From jogadores where id = &1 ", pkey)
tb1.Text = module1.resultado!jogador
tb2.text = module1.resultado!posicao
TB4.text = module1.resultado!camisa
TB5.text = module1.resultado!id
db.Close
End
''METODO DE INSERÇAO
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
''
Public Sub Button8_Click()
Dim tt As Integer = CInt(TB5.Text)
Module1.conex()
Module1.db.EXEC("delete from
jogadores where id=&1", tt)
jog = TB1.text
pos = TB2.text
cam = TB4.text
module1.db.EXEC("insert into
jogadores values(&1,&2,&3,&4)", jog, pos, cam,
tt)
db.Close
End
'
''METODO DE GRAVAÇAO EM ARQUIVO TEXTO.
'''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-
Public Sub Button6_Click()
Dim a As String
Dim b As String
Dim c As String
Dim d As String
Dim x As Short = 1
Dialog.Filter = ["*.lst",
"Lists", "*.txt", "Text Files", "*",
"All Files"]
If Dialog.SaveFile() Then Return
File.Save(Dialog.Path,
Lb1.List.Join("\\n"))
Catch
Message.Info("Cannot save
list:\\n" & Dialog.Path & "\\n" &
Error.Text)
End
'METODO DE FIMALIZAÇAO DO AP
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-
Public Sub Button4_Click()
hFile.Close
module1.db.Close()
FTest.Close
End
Public Sub PB1_MouseDown()
End
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MODULO DE CONEXAO
' Gambas module file
'metodo de conexao
'Author Edson Pessotti
''Junho/2016
'''PROGRAMAÇAO VISUAL GAMBAS3
''''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public db As New Connection
Public resultado As Result
Public Function conex() As Boolean
db.CLOSE()
db.Type = "mysql"
db.host = "localhost"
db.Port = "3306"
db.Login = "root"
db.Name = "gambas"
db.password = "edson...9"
db.OPEN()
Return True
Catch
message.error(" Deu PAU na conexao")
Return False
End
'Metodo de seleçao0x0x0x0x0x0x0x0x0
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub consulta(query As String)
'
End '
'Metodo de inserçao
''--0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Insere(query As String)
Return
End
'Metodo de Deleçao
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Deleta(query As String)
End
'Metodo de Atualizaçao
'-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Atualiza(query As String)
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=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0=0
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-------------------------------------------------------------------------------------------------------------------------------------
MODULO DE CONEXAO
' Gambas module file
'metodo de conexao
'Author Edson Pessotti
''Junho/2016
'''PROGRAMAÇAO VISUAL GAMBAS3
''''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public db As New Connection
Public resultado As Result
Public Function conex() As Boolean
db.CLOSE()
db.Type = "mysql"
db.host = "localhost"
db.Port = "3306"
db.Login = "root"
db.Name = "gambas"
db.password = "edson...9"
db.OPEN()
Return True
Catch
message.error(" Deu PAU na conexao")
Return False
End
'Metodo de seleçao0x0x0x0x0x0x0x0x0
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub consulta(query As String)
'
End '
'Metodo de inserçao
''--0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Insere(query As String)
Return
End
'Metodo de Deleçao
''-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Deleta(query As String)
End
'Metodo de Atualizaçao
'-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0
Public Sub Atualiza(query As String)
Abçs at'e o proximo post.
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