Connecting To A .mdf Database?
Jun 5, 2011
I got vb.net 2008 express and sql server 2005 and 2008 express editions whic I downloaded from microsoft website.Now I just want to connect vb.net with sql server 20o5 or 2008.I am using a connection string as
PubConnstring = "Data Source=RAMANSQLEXPRESS;Database=FirmTest11;Trusted_Connection=Yes"
'Create your connection object
Dim objconnection As ADODB.Connection
Dim strSQL As String
[code]....
Getting Error : [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.
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Feb 14, 2011
I'm trying to write a method in VB.net so that when I click a button it queries the database and returns all the values which match a textbox which is located next to the button. I have no idea how to do this, I assume in the onclick method for the button I will need to pull in the value from the textbox, connect to the database and display the results to a gridview?
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Jun 22, 2010
I have a database in the same workspace, I've tried to connect to this DB using this codes :
[Code]...
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Apr 14, 2011
I'm having problems connecting to a database. I have sql server 2005 express installed on my PC, and i am using the following to code to connect to it.
Dim nwindConn As SqlConnection = New SqlConnection("Data Source=localhostSQLExpress;Initial Catalog=northwnd;" & _
"Integrated Security=SSPI")
[code].....
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Jun 2, 2010
Ok I'm finally getting to put on big boy pants and have now moved beyond doing everything in Access (yay me).o here is the problem, can't connect to the Server. created a test button on my form, which is what I usually do with Access so Ican be sure everything is where it needs to be pointing.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
[code]....
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Sep 21, 2010
is it possible to connect to a database residing on a website (eg., MS Access)to get/update data.can we do it by a VB.net windows application.
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Mar 25, 2011
Dim con As New System.Data.SqlClient.SqlConnection
con.ConnectionString = "Server=iraq\sqlexpress ; Database=stats ; Trusted_Connection=True ;"
Dim com As New System.Data.SqlClient.SqlCommand
com.CommandText = "insert into users values('" & TextBox1.Text & "','" & TextBox2.Text & "','" & TextBox3.Text & "')"
[Code]...
There are new events happen when i adjust the connection string
con.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=C:Documents and SettingsAdministratorMy DocumentsVisual Studio 2005WebSitesWebSite2App_Datastats.mdf;Integrated Security=True;User Instance=True"
show me error with com.ExecuteNonQuery()
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Feb 8, 2012
I am a wannabe programmer but quite new, started with VB.net about 1 month ago.I write on this forum because It's the first time that I'm actually stuck. The problem is I cannot find a way to connect to SQL server database I have created and saved earlier on my HD using visual express 2010. I want to find a way to connect using code, not by click and drop. I just hope you won't find my issue too trivial to even answer it.The project is very simple, it just consists of a button that should connect to the db on click.[code]
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Apr 7, 2011
Today is my first day trying to use Oracle databases in Asp.NET so I have no idea of what I need to do. I have added this code
[Code]....
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Mar 8, 2012
I use VB.NET 2010 Express and Windows 7. Access is not installed.The code used to connect database password protected, is:
Public Class Form1
Dim cn As OleDb.OleDbConnection
Dim cmd As OleDb.OleDbCommand
The code is not working. I get this error: "Could not find installable ISAM".
NB: The error occurs only if the database is password protected!For unprotected database, code works without error.
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Mar 15, 2012
My code is:
CODE:
It works for a database without password. But for a database with password and the string: "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:DBB.mdb;Jet OLDB:Database Password=xxx"
I get an error:"Object reference not set to an instance of an object." Where wrong?
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Apr 1, 2010
i'm fairly new to VB and am doing my second system through it. I am at the point where i want to link a combobox on my form to my access database so that when i click the dropdown arrow a list of surnames from the particular table in my access database appears.
[Code]...
First things first is this code remotely close to doing what i want it to do? I have to use an access database and i am familiar with this particular method of connecting to the database (sending any data to it is easy now). Secondly when the form opens (since the sub is called at load) i get the annoying old "object reference not set to an instance of an object" message.
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Feb 17, 2010
I have a database(.sdf file) in ppc folder - Storage CardProgram FilesEmpEmployee.sdf. I want to connect this file with sql express 2005. I use this code
Dim Con as new sqlconnection
Con = New SqlConnection("Data Source= 192.168.55.101Storage CardProgram FilesEmpEmployee.sdf;Password = 12345;Integrated Security=SSPI")
[code].....
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May 30, 2010
I have a problem in connecting in access database in vb .net.
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Jan 11, 2010
i want to share my ms access database in other computer using LAN so that they have they same database. it is possible?? or any idea that is easier than this?.. my program is just like this. i created a program called ordering system.. the 1st computer will save the orders of the customer and the 2nd computer will retrieve the orders of the customer..
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Nov 25, 2010
Public Class Form1
Dim con As New OleDb.OleDbConnection
Dim dprovider, dsource As String
Dim ds As New DataSet
[code]....
The code above can access the database but it refuses to add,update,or delete any records..
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Feb 15, 2012
we know that in Visual Studio, you can open a different kind of database: like: Access, SQL server or file, Oracle. is there any reference that you'v know on how to make that kind of program? i don't know where to start.
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Apr 6, 2012
I am trying to make make a database in vb.net but I am having troble I want to have a form that a user could add and edit columns and rows to the tables in my database. Now a sevice based database would not work on my computer because i did not know how to set up the correct sql sever for vb.net 2008 so I used a Local SQL database i have tried to write some code to connect to it.
i will need further help on try to add the controls to edit the database but i will attempt that befor eposting for help. so here is my connection code i am trying to use a data grid to alow the data base to be edited.
also do I need to add the QNA table to data souces for it to be accessed ?[CODE...]
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Jun 21, 2010
I think I already know the answer to this, but just to be sure, is there any way to connect to a MySQL database in VB?
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Jun 14, 2010
I have a VB.NET application and I need it to be able to display rows from a MySQL database. How would I do this?
Update: Another thing that I could do is have the app get a PHP page from the site that shows the DB, and gets the page every 10 seconds or so.
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Oct 8, 2008
I have a VB.net program connecting to an Access database. I use ADODB as connection (force of habit, I suppose). The program runs fine on all my machines, but on some of the client machines I get an error on the connection to Access. It is intermittent (sometimes runs without any problems) and happens at different places in the code, but always at the connection with the database. The program connects and closes connections quite a few times during a calculation.
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May 29, 2010
just a few questions. I have read through a of tutorials and snippets on access database.Connecting, updating, inserting, deleting, etc. My main question is this, I have not yet coded the connection to a database using code such as you all. I have always used the wizard to create my connection, table and view this also add the database to the project. Is it better to code the connection, or use the wizard? I have just started creating a program to feed company keep track of there inventory, right now I have 2 tables (feed, misc) both table contain the same things (code, description, price, and quantity). Any way I am getting off the subject, Write the code to connect to the database or use the wizard?
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Aug 3, 2011
connecting to an access database via lan
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Aug 19, 2011
I am trying to write an application, that opens up a specific Access database, change the VBA module slightly, then close the database, saving the changes.Now my code works but it doesn't seem to close Access down very well, causing the following errors:Faulting application MSACCESS.EXE, version 12.0.6535.5005, time stamp 0x4bf5c550, faulting module ole32.dll, version 6.0.6002.18277, time stamp 0x4c28d53e, exception code 0xc0000005, fault offset 0x00047333, process id 0x13e0, application start time 0x01cc5dc3fb9eeb42.
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Jun 21, 2010
I friend and I are trying to work our way through this, and right are having some issues in terms of getting vb.net to connect to an online sql server. We have found lots of resources to connect to local sql servers but nothing about connecting to an online one. I was wondering if this is possible as we are trying to be build an inventory and pos system for a small company we have, which can be accessed through the vb program from any computer as long as it has an active web connection.
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Apr 27, 2012
I have created an SQL Server 2012 database using the Server Managment studio and I want to connect to in in VB2010. When I run the connection wizard and locate the .mdf file it always tells me that the file is in use and to close any programs that have it open.
However VB is the only program I have open so I am not sure why it is telling me this order how to overcome it.I have tried creating a different database the same way to see if that help but it doesnt.
Is there something I might be missing in the creation of my SQL db that might be causing it?
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Feb 5, 2009
i am building my first VB.net application with a connection to an Access database. Now, this works fine when I debug, however when I deploy the application I get the error saying "Could not find file", which I assume means i have got one of the publishing settings wrong? I don't think it is a code error because it works when I debug, but if anyone wants to see part of it please let me know.
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Aug 15, 2010
When I followed the flow of the program, It seems it can'n connect to my database I created using ms Access... Because of my curiosity, I really need some help to answer my confusions... I have a problem connecting to my database in ms access.... I think their is lacking in my codes.
here is my code.
Imports System.Data.OleDb
Module Utility
Private strConn As String = "provider=Microsoft.Jet.OLEDB.4.0;Data Source="
[code]....
1. Private strConn As String = "provider=Microsoft.Jet.OLEDB.4.0;Data Source=" do i need to put something in the data source?? what will I put?
2. strConn &= dbPath.Substring(0, dbPath.Length - 9) & dbName i don't know where "9" come from....
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Aug 19, 2011
i'm doing the project of database by using IBM-DB2 and i need to use the visual studio 2010 to connect with IBM-DB2 and i have saw the comment that posy by someone. I follow all the code there and now i found some have a blue line.
Imports System.Data.OleDb
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'connection string
[code]....
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Jun 15, 2009
I have recently just decided to get back into learning some coding and downloaded the MS Visual Basic 2008 Express addition, and i believe this is the right forum, not vb.net.My question is how to open a connection through code to an access database.From what I remember you have to initialize the variables before the functions up top and then open the connection string somewhere. Can someone provide some basic code to open the connection between the form and the database. I am just starting out again and want to basically just populate a combo box by clicking a button, from a table in access with 5 colors.
import.system.oledb >>>>>>>>>>>>?
dim connection as oledb >>>>>>>>>>>?
Sub Fuction ()
[code]....
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