Database connection with VB 6.0
VB provides a rich set of of database
connectivety.Most of work which is needed done by aotomatically.There’re some
control which provides database connectivety.Here i’m going to implement it
using ADODB.
ADODB provides connection class.which handle insert ADODB,update,delete operation
efficiently.
Ø
Make an objet of ADODB,Connection
Ø
Then call open function which
takes connection string as argument
Ø
Connection string comprise
database enzine name and your database path.I have supply relative path my
database is in current folder.
Controls :
( Three label,,Three Moniter,Three textbox )
Coding
Dim con As New ADODB.Connection
Private Sub btnDelete_Click()
If txtRoll.Text = "" Then
MsgBox "Please enter roll no."
txtRoll.SetFocus
Else
If MsgBox("Are you sure to delete this record", vbYesNo, "Girfa") = vbYes Then
con.BeginTrans
con.Execute "delete from stu where roll=" & txtRoll.Text
con.CommitTrans
txtRoll.Text = ""
MsgBox "Record deleted"
End If
End If
End Sub
Private Sub btnSave_Click()
If txtRoll.Text = "" Or txtName.Text = "" Or txtCity.Text = "" Then
MsgBox "Please Fill alll field"
Else
con.BeginTrans
con.Execute "insert into stu values(" & txtRoll.Text & ",'" & txtName.Text & "','" & txtCity.Text & "')"
con.CommitTrans
MsgBox "Saved", , "Girfa"
End If
End Sub
Private Sub btnUpdate_Click()
If txtRoll.Text = "" Or txtName.Text = "" Or txtCity.Text = "" Then
MsgBox "Please enter all field value"
Else
con.BeginTrans
con.Execute "update stu set name='" & txtName.Text & "',city='" & txtCity.Text & "' where roll=" & txtRoll.Text
con.CommitTrans
MsgBox "Record has been updated", , "Girfa"
End If
End Sub
Private Sub Form_Load()
con.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=bsw.mdb;Persist Security Info=False"
End Sub
