VB Connection To Database?
Feb 26, 2010i am an IT student and i want to understand very well how to program in visual basic.net and how to manipulate its connection to database since my project uses visual basic environment.
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Display Connection Properties Dialog For Connection String Browsing(for Database) In Run Time?
Feb 5, 2010Is there a way to display the connection properties dialog for connection string browsing(for database) in run time?
As I want the user to be able to connect to various database using the GUI.
Sql Server - .net Program Dataadapter Connection Closes After Fill But Database Still Shows Connection?
Aug 19, 2010After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives
Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable
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Database Connection Dll - Error "database Connection Is Not Opened"
Nov 7, 2010i am using access database for my program. now i have connected to the database in MDI form of main exe, and ir also works, user can log in, it gets verified etc etc etc. now here is the problem, when i load a form from dll and try to use any sql query on that form, i get message, "database connection is not opened". so what i did was, i added the connect() (a function i designed to connect to database) in the load part of the dll's form, it made the trick, query's started to run, everything went fine, and when i reload the form i.e after closing the form, i load it again from MDI form, i get error, connection already open..
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VS 2008 Database Insert ID Using A OleDB Connection To A Access Database
Jan 2, 2010I'm using a OleDB connection to a access database. I'm entering a row into the database to set some user preferences. What i need to get is get back the row ID of the row I just entered. I'm more familiar with PHP and with PHP I use use this entry
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Sql - Copying A Table From One Database Into A Database On A Different Connection (ADO.NET)
Jun 17, 2011I am trying to copy a table in a database into another database on another connection in VB.NET, using OleDb. If they were on the same connection I would just use SELECT INTO, but they are not. I have two different OleDbConnection and cannot see an easy way to do this.
Right now I am attempting to just copy the database into a DataTable using an OleDbDataAdapter, and then loop through the DataTable and insert every record into the target database one at a time. This obviously takes a ton of time for the large DB I could potentially be dealing with, and I have to deal with escaping strings, null values, etc.
edit - just to make this more clear: I have two OleDbConnection objects, one is linked directly to a local .mdb file on my computer (JET). The other is linked to a database on our servers (SQLOLEDB). I am wanting to do this:
"SELECT * FROM fromDB INTO toDB"
But I can't because fromDB and toDB are on different connections, and the OleDbCommand object is only attached to one. The only way I can see how to do this is to connect to fromDB, copy it into a DataTable, connect to toDB, and copy all of the data in the DataTable row by row into toDB. I was wondering if there is an easier way to do this.
Set A Database Connection?
Mar 22, 2010I am trying to change my windows application I made in vb.net that uses an access database. I do not know where this database will be stored at this time so my plan is to set the connection using code based off a text file that points to the location of the database. Here is the code I have but I know there is something wrong with my syntax because it putting "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|IWS.mdb" in both the data source and the database name.[code]...
View 14 RepliesADO Connection To Access Database
Oct 27, 2009I'm just learning VB and would like to know: How do I create VB connection to an Access 2007 DB? I can use the DataGridView to view the table but can not create a connection to add records.
View 3 RepliesC# Database Connection Code?
Oct 11, 2011with the meaning of this snippet?
string conString =@"Provider=Microsoft.JET.OLEDB.4.0;" + @"data source=c:illing.mdb"; OleDbConnection conn = new OleDbConnection(conString); Conn.Open(); DataSet ds = new DataSet(); OleDbDataAdapter adapter =
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Can't Open To Connection To SQL Database
Nov 23, 2011I have a .mdf file that I open through an Open Dialog Box and use in a ConnectionStringBuilder (where I have the user instance set to True). Later, in one of my button clicks, I try to open the connection (connection.Open()). It then gives me an error as follows: "Generating user instances in SQL Server is disabled. Use sp_configure 'user instances enabled' to generate user instances."
Here is my code:
Option Strict On
Imports System.Data.SqlClient
Public Class frmMain
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Check Sql Database Connection?
Apr 12, 2011I made program which connects sql database via WiFi network. I have timer wich every 10 minutes updates textbox information from database. If Network connection will be lose, i do not whant to get any error and after that lose data wich is in textbox, until sql database connection will not be. How can i check if connection exists and after that update data from database? Something like that:
Conn = New SqlConnection(ConnectionString)
Conn.Open() ' if connection is lost there gets error
If Conn.State = ConnectionState.Open Then ' But this does not works
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Code For Database Connection?
Apr 16, 2010provide VB.net connection code to connect with sql server for adding,deleting and updating data.I'm new to .Net.I need to learn .VB.Please provide the code for this.Those who know the code please provide here.
View 2 RepliesConnection Of Database(mysql)?
Mar 23, 2012Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim MyConnection As New OdbcConnection("Driver={MySQL ODBC 5.1
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Connection To Access Database
Oct 25, 2009I am trying to connect to access database in VB 2008 express. When I write the code like Dim cnTemp As ADODB.connection it gives error that ADODB is not defined.
View 3 RepliesConnection To Database Is Now Closed
Aug 2, 2010I am using the visual studio 2008 but use the guide for 2oo5 .I wonder why the program show error after click the load button (btnload). I am following the http: [URL] and having problem with the 'Filling the DataSet'. Is it because of different version?
The code I use:
Public Class Form1
Private Sub Ordered_booksBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Ordered_booksBindingNavigatorSaveItem.Click
Me.Validate()
Me.Ordered_booksBindingSource.EndEdit()
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Create A Connection To A Database?
Aug 5, 2009I wrote a small application in witch I create a connection to a database. I'm new to this, so I followed the steps in MSDN help. I first created a link to the database with the "Datasource" of the Visual Studio environement. Then, in the code, I create instances of the dataset in the datasource and use a tableAdapter to register my changes in the database.
Now I want to allow the user of the application to specify the path of the DB file he wants to use. How can I do so? Do I still can use the datasource in the VS environment? I don't know where to start.
Create Connection To Database?
Apr 16, 2011im sure that there are plenty of people here that have the same problem as me, but i cant seem to find a forum that explains this to me. well basically i have a program i am creating to use as a phone list, but to save data to a database on a mapped hard drive. I want to give the user the option to set the path of the database just by typing it into a textbox. The database will be supplied with the program, with all appropriate tables, i just really would like to know how to set up a connection to a database using code, and to be able to display it into a datagrid veiw. I know this seems simple to you guys,and i am really sorry, i am just new at this.
and also if u could, could u describe to me how to make it search through the database for like certain names/numbers?
Create The Connection To Database?
Jul 1, 2009I have this code of sending sms but i dunno know how to make the connection for the below code to run my program.
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Database Connection In .net Using Sqlserver
Mar 9, 2009how to establish a connection in vb.net using sqlserver
View 3 RepliesDatabase Connection Is Not Ending?
Feb 29, 2012I have the following code to insert some data from a GridView to a oracle database.
Protected Sub btnInsert_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnInsert.Click
Dim con = New OleDbConnection("Data Source=sml2; User ID=sfpl; Password=a;
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Database Connection To Access?
Nov 13, 2009over following conflicts that im facing;1-database Connection issue: I have made successful connection with ACCESS database from win form (vb.net)
View 6 RepliesDatabase Connection Using Msaccess?
Jul 7, 2009how to connect database in vb.net using msaccess
View 1 RepliesDatabase For Network Connection?
Nov 27, 2009im creating a program that will connect to a database (not local).That database will be access by everyone of my officemate for our data storage.The problem is the sample for creating a database is it make use of lacol database which can only be access by single user.how connect to a database later on after my deploying my application.
Scenario1:
interface program created: DONE
User input interface created: DONE
Database created(but not yet connected to the actual application): DONE
Scenario 2:
Program Deployed :DONE
Scenario3:how can i connect to the Database i created with program i just publish/deployed?
something like that i have a command button then it will open a dialog to locate an existing database then connect to that database (ms access database or sql database created in - creating database sample).
Establishing Connection To Database
Apr 5, 2010The database is setup by the free MySQL database hosting site: [URL], but when i try and connect to it using the "New data connection" dialog it fails. Here are the details i'm entering:
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Global Database Connection In .net?
Sep 2, 2011I've inherited an application that uses a global database sqlconnection object in order to access the database from every form in the application. The connection is established when the application starts.I think to have the connection open all the time it's not good practice and I would prefer to change it so I would open the database connection and close it every time I need to access the database.
Public Sub UpdateDatabase(ByVal command As SqlCommand, ByRef NumError As Double, ByRef DescError As String)
Using connection As New SqlConnection(connectionString)
Try
command.ExecuteNonQuery()
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I send the SqlCommand object to the method instead of a query string because I can add parameters to an SqlCommand object.
How To Open Database Connection
May 12, 2005I am currently working on a login page using vb.net. I would like to know how to make connection to an access database and verify that the user logged in is a valid user
View 6 RepliesIDE :: Database Connection Error?
Jan 17, 2009This is what I'm getting when I try to connect my MS Access mdb database to my program. It keeps asking me to enter a connection string and when I do this is the error I'm getting."Format of the initialization string does not conform to specification starting at index 0.
View 2 RepliesIDE :: Validation And Connection To .mdf Database?
Mar 3, 2010i`m currently trying to create log in function in window form.basically, i`m already create database (database in vb 2008 itself ; .mdf dtbs) for login,which the login table contain 3 columns, Username, Password and Designation.example
: Username -- Password -- Designation
jack -- 123abc -- consultant
jane -- lovely -- project manager
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Make The Connection To A SQL Database?
Jun 22, 2010How do I make the connection to a SQL database (one to many), with VB.NET?
View 1 RepliesMysql Database Connection .net?
Apr 25, 2011I'm trying to connect to a database but it doesn't work...
Code:
Dim conn As MysqlConnection
conn = New Mysqlconnection()
conn.ConnectionString = "server=http://www.*****.net/phpMyAdmin; user id=*****; password=****; database=login"
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