I am trying to link a VB application with a MS access database.
The only way I seem able to do this is through adding a data source. Is there a way or doing this so you use it as an external and code to the file location rather than actually uploading the database to vb?
Thanks
Imports System.Data.Oledb
Dim con As New OledbConnection("Provider=microsoft.Jet.oledb.4.0DataSource=D:\mydata.mdb;")
Dim cmd As New OledbCommand
Public Sub New()
con.Open()
cmd.Connection = con
cmd.CommandText = "SELECT * FROM table1"
End Sub
Related
So i have here my codes for fetching informations from the database using
the listview, and now i want to use the datagridview but i dont know how
to do it using the ADODB Connectionenter image description here.
If you are able to use an Odbc connection instead try this to retreive your data
Dim conn As New OleDb.OleDbConnection("path to your database")
Dim cmd As New OleDb.OleDbCommand
Dim da As New OleDb.OleDbDataAdapter
Dim sql as String
Sql = "your SQL Query"
conn.Open()
cmd.Connection = conn
cmd.CommandText = Sql
da.SelectCommand = cmd
You can try using Odbc Connection in VB.Net.
First add new Module named Connection.vb
Imports System.Data.Odbc
Module Connection
Public Con As New OdbcConnection
Public Adpt As New OdbcDataAdapter
Public Ds As New DataSet
Public Cmd As OdbcCommand
Public Read As OdbcDataReader
Public Sql As String
Public StrCon As String = "Dsn=Your DSN Name in Odbc Connector"
Public Sub Connect()
Con = New OdbcConnection(StrCon)
If Con.State <> ConnectionState.Closed Then Con.Close()
Con.Open()
End Sub
End Module
And next don't forget to add Imports System.Data.Odbc in every form you have to connect to your Odbc Connection.
Simple Code to add item on ComboBox from Database.
Call Connect()
Cmd = New OdbcCommand("SELECT * FROM `category` ", Con)
cmbKategori.Items.Clear()
cmbKategori.AutoCompleteCustomSource.Clear()
Read = Cmd.ExecuteReader()
If Read.HasRows = True Then
While Read.Read()
cmbKategori.AutoCompleteCustomSource.Add(Read("name_category"))
cmbKategori.Items.Add(Read("name_category"))
End While
End If
I'm creating a system that use foxpro as a database. I keep getting this error error [42S02][microsoft][ODBC visual foxpro driver] not a table when I want to connect VFP database with Visual Studio. When I add data connection in the visual studio, it shows connection success, but when I try to open the table, it shows the error.
This is a VB.Net system that use database foxpro 9. I have use mysql as the database and it work, but when I try to use foxpro database I get an error.
Imports System.Data.Odbc
Imports System.Data.OleDb
Public Class login
Private Sub btnEnter_Click(sender As Object, e As EventArgs) Handles btnEnter.Click
Dim oConn = CreateObject("adodb.connection")
oConn.ConnectionString = "Provider=vfpoledb;DSN=visual_foxpro"
oConn.Open()
Dim conn = New OleDbConnection()
Dim cmdString As String = "SELECT * FROM `login` WHERE `staffID`= #staffid AND `staffName`= #staffname"
Dim cmd As New OleDbCommand(cmdString, oConn)
cmd.Parameters.Add(New OleDbParameter("staffID", CType(txtStaffID.Text, String)))
cmd.Parameters.Add(New OleDbParameter("staffName", CType(txtStaffID.Text, String)))
Dim adapter As New OleDbDataAdapter(cmd)
Dim table As New DataTable()
adapter.Fill(table)
If table.Rows.Count = 0 Then
MessageBox.Show("Staff ID or Staff Name not available")
Else
MessageBox.Show("Welcome " & txtStaffName.Text)
Dim form As New formLeave
form.PassStaffid = txtStaffID.Text
form.PassStaffName = txtStaffName.Text
form.Show()
Me.Hide()
End If
End Sub
End Class
I expected the system can login using the database.
VFP database versions later than 6.x do not have an official ODBC driver from Microsoft. If you HAVE TO use ODBC, then you can find alternative drivers from sources like Sybase ADS. I use OLEDB instead successfully well.
While your code might work with MySQL, that is not the way you should write it. Also, it is MySQL specific, it wouldn't work in say MS SQL Server or postgreSQL either. You should read the documentation on the backend you are using. In VFP (or MS SQL Server, postgreSQL ...), you don't use back tics as table and field name identifiers. In VFP, if need be, to use name identifiers you could use single, double quotes or square brackets but you would need to enclose with parentheses (and use only for table name in an SQL query). Anyway, the easy way is to simply not to use identifiers at all.
Also, with an ODBC or OLEDB query, you need to use ? as parameter placeholders. Using #staffID wouldn't normally work in MySQL, ... either, but driver makers decided to support them for those backends.
From your messageBox messages, looks like you expect to get a single row for that query (I don't know why you use both staffId and staffName if staffId is primary key). Anyway here is your query in VB.Net:
Imports System.Data.OleDb
Public Class login
Private Sub btnEnter_Click(sender As Object, e As EventArgs) Handles btnEnter.Click
Dim strConn As String = "Provider=VFPOLEDB;Data source=c:\MyDataFolder\"
Dim strQuery As String = <sql>SELECT *
FROM login
WHERE staffID=? AND staffName=?
</sql>
Using cn As New OleDbConnection(strConn)
Using cmd As New OleDbCommand(strQuery, cn)
cmd.Parameters.Add("#staffid", OleDbType.VarChar).Value = txtStaffID.Text;
cmd.Parameters.Add("#staffname", OleDbType.VarChar).Value = txtStaffName.Text;
cn.Open()
Dim rdr As OleDbDataReader = cmd.ExecuteReader()
If rdr.Read()
MessageBox.Show("Welcome " & txtStaffName.Text)
Dim form As New formLeave
form.PassStaffid = txtStaffID.Text
form.PassStaffName = txtStaffName.Text
form.Show()
Me.Hide()
Else
MessageBox.Show("Staff ID or Staff Name not available")
End If
cn.Close()
End Using
End Using
End Sub
End Class
I am trying to connect using vb.net (Visual studio 2013) to an MS Access Database 2007(.accdb) using codes. But something is wrong in my code and i can't figure it out.
the Database name is "localDatabase.accdb"
I didn't put any password on my database
I'm using a 64bit
Thanks in advance!
Here is my code:
Module Module1
Dim conn As New System.Data.Odbc.OdbcConnection
Public Sub ConnectToOdbc()
conn.ConnectionString = Provider=Microsoft.ACE.OLEDB.12.0;Data Source="C:\Users\MyPc\Documents\Visual Studio 2013\Projects\database\localDatabase.accdb"
Try
conn.Open()
Catch ex As Exception
MessageBox.Show("Failed to connect to data source")
Finally
conn.Close()
End Try
End Sub
End Module
this is just a hypothesis..
I am using ACE 12.0 now on my app, and it works fine. the different thing is the code try to use this..
Imports System.Data.OleDb
'instead of obdc
con = New OleDbConnection
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source = " & Path.Combine(Application.StartupPath, "YourDatabase.accdb")
'put your .accdb in your app folder
maybe the error is it can't find your .accdb file.
Change this line:
conn.ConnectionString = Provider=Microsoft.ACE.OLEDB.12.0;Data Source="C:\Users\MyPc\Documents\Visual Studio 2013\Projects\database\localDatabase.accdb"
to this:
conn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\MyPc\Documents\Visual Studio 2013\Projects\database\localDatabase.accdb"
ConnectionString as the name tell is a string, so you need to wrap it with double-quotes to be recognized as string by VB compiler.
UPDATE :
Also you need to change the connection object from Odbc to OleDb:
Dim conn As New System.Data.OleDb.OleDbConnection
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I'm currently working on my thesis in school and they required me to use VB2010 and MS ACCESS 2010.
what could be the easier way to connect and manipulate the DB?
is it by using MS ACCESS 2003? or MS ACCESS 2007?
I need some help because I'm new to Visual Basic 2010
Have you googled about it - insert update delete access vb.net, there are lots of reference about this.
Insert Update Delete Navigation & Searching In Access Database Using VB.NET
Create Visual Basic 2010 Project: VB-Access
Assume that, we have a database file named data.mdb
Place the data.mdb file into ..\bin\Debug\ folder
(Where the project executable file (.exe) is placed)
what could be the easier way to connect and manipulate the DB?
Use OleDBConnection class to make connection with DB
is it by using MS ACCESS 2003 or MS ACCESS 2007?
you can use any you want to use or your client will use on their machine.
it seems that you want to find some example of opereations fo the database. Here is an example of Access 2010 for your reference:
Example code snippet:
Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class DBUtil
Private connectionString As String
Public Sub New()
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String = "Provider=Microsoft.ace.oledb.12.0;"
Dim dbSource = "Data Source=d:\DB\Database11.accdb"
connectionString = dbProvider & dbSource
End Sub
Public Function GetCategories() As DataSet
Dim query As String = "SELECT * FROM Categories"
Dim cmd As New OleDbCommand(query)
Return FillDataSet(cmd, "Categories")
End Function
Public SubUpdateCategories(ByVal name As String)
Dim query As String = "update Categories set name = 'new2' where name = ?"
Dim cmd As New OleDbCommand(query)
cmd.Parameters.AddWithValue("Name", name)
Return FillDataSet(cmd, "Categories")
End Sub
Public Function GetItems() As DataSet
Dim query As String = "SELECT * FROM Items"
Dim cmd As New OleDbCommand(query)
Return FillDataSet(cmd, "Items")
End Function
Public Function GetItems(ByVal categoryID As Integer) As DataSet
'Create the command.
Dim query As String = "SELECT * FROM Items WHERE Category_ID=?"
Dim cmd As New OleDbCommand(query)
cmd.Parameters.AddWithValue("category_ID", categoryID)
'Fill the dataset.
Return FillDataSet(cmd, "Items")
End Function
Public Sub AddCategory(ByVal name As String)
Dim con As New OleDbConnection(connectionString)
'Create the command.
Dim insertSQL As String = "INSERT INTO Categories "
insertSQL &= "VALUES(?)"
Dim cmd As New OleDbCommand(insertSQL, con)
cmd.Parameters.AddWithValue("Name", name)
Try
con.Open()
cmd.ExecuteNonQuery()
Finally
con.Close()
End Try
End Sub
Public Sub AddItem(ByVal title As String, ByVal description As String, _
ByVal price As Decimal, ByVal categoryID As Integer)
Dim con As New OleDbConnection(connectionString)
'Create the command.
Dim insertSQL As String = "INSERT INTO Items "
insertSQL &= "(Title, Description, Price, Category_ID)"
insertSQL &= "VALUES (?, ?, ?, ?)"
Dim cmd As New OleDb.OleDbCommand(insertSQL, con)
cmd.Parameters.AddWithValue("Title", title)
cmd.Parameters.AddWithValue("Description", description)
cmd.Parameters.AddWithValue("Price", price)
cmd.Parameters.AddWithValue("CategoryID", categoryID)
Try
con.Open()
cmd.ExecuteNonQuery()
Finally
con.Close()
End Try
End Sub
Private Function FillDataSet(ByVal cmd As OleDbCommand, ByVal tableName As String) As DataSet
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String = "Provider=Microsoft.ace.oledb.12.0;"
Dim dbSource = "Data Source=D:\DB\Database11.accdb"
connectionString = dbProvider & dbSource
con.ConnectionString = connectionString
cmd.Connection = con
Dim adapter As New OleDbDataAdapter(cmd)
Dim ds As New DataSet()
Try
con.Open()
adapter.Fill(ds, tableName)
Finally
con.Close()
End Try
Return ds
End Function
End Class
Refer these links:
Insert, Update, Delete & Search Values in MS Access 2003 with VB.NET 2005
INSERT, DELETE, UPDATE AND SELECT Data in MS-Access with VB 2008
How Add new record ,Update record,Delete Records using Vb.net Forms when Access as a back
A good resource start off point would be MSDN as your looking into a microsoft product
I get an error when I am trying to connect to a Microsoft Access DB using VB.NET. I see examples all over the web. My code looks like those examples, however I am getting a build error message stating:
Type 'System.Data.OleDb.OleDbConnection' is not defined.
I have tried adding some kind of import statement for the system.data.oledb... but that does not seem to work. My code is below. It is a basic connection so I am thinking that I am missing some kind of add in, library, or setting. Any and all help would be greatly appreciated.
Public Function TestMain(ByVal args() As Object) As Object
' Connection String to MS Access DB
Dim connectStr As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=C:\Users\DMalerman\keyword.accdb;" & _
"Persist Security Info=False;"
MsgBox(connectStr)
' Create connection to the db
Using connection As New System.Data.OleDb.OleDbConnection(connectStr)
' Create the SQL Query
Dim readQuery As String = "Select KeywordDriver.ScriptName from KeywordDriver " & _
"where KeywordDriver.Keyword = test"
Dim queryCommand As New System.Data.OleDb.OleDbCommand(readQuery, connection)
'Open the Connection
connection.Open()
' Query the Database
Dim dbReader As System.Data.OleDb.OleDbDataReader = queryCommand.ExecuteReader()
' Loop until there is nothing left to read
While dbReader.Read()
Dim sKeyword As String = ""
sKeyword = dbReader.GetString(0)
MsgBox(sKeyword)
End While
' Close the Reader
dbReader.Close()
End Using
Return Nothing
End Function
did you try
imports System.Data.OleDb
?
if so, did it give you an error?
Please try to modify this line:
Dim queryCommand As New System.Data.OleDb.OleDbCommand(readQuery, connection)
by putting these only:
Dim queryCommand As New System.Data.OleDb.OleDbCommand(readQuery)
queryCommand.Connection = connection
Imports System.Data
Imports System.Data.OleDb
Module Module1
Public str As String
Public con As OleDbConnection
Public cmd As OleDbCommand
Public dtreader As OleDbDataReader
Public dtadapter As OleDbDataAdapter
Public Sub openconn()
str = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\Database2.mdb"
con = New OleDbConnection(str)
Try
con.Open()
Catch ex As Exception
MessageBox.Show("gagal koneksi")
End Try
End Sub
End Module