SQL Connection - Creating And Working With Database
Jan 7, 2010
On my development PC I have SQL Server installed, and my SQL connetion works perfect. I use a trusted connection. But on other PCs, where the program should work later, there is only a SQL "Express" installed (by another application), and it seems they have an password on the SQL Server (I guess). I have no chance to get the password from the other application. My connection is not working here. I created some connection test, but it does not seem to work with the trusted connection. I need the SQL only for creating my own database and connecting to my own database. So how do I create a connection with SQL Express for creating and working with my own database?
Here my code for testing the connection so far (Fehler means Error, erfolgreich means Success) Private Sub mnu_Verbindung_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mnu_Verbindung.Click
Dim bolFehler As Boolean = False
Dim sServer, sDatab As String
[Code] .....
I've been viewing the tutorial at [URL]...08-088541.html but I'm still having issues creating my connection to our Oracle database. Here's my code, which uses the same connection string as one of my VB6 programs (no password required for database--Oracle picks up windows name) :
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'Create connection object Dim OraDB As String = "Data Source=databaseneme;Persist Security Info=False" Dim conn As New OracleConnection(OraDB) conn.ConnectionString = OraDB conn.Open() Me.Show() End Sub
I've been using .NET for all of 10 mins so the error may be painfully obvious!
I am trying to create error messages to display on a form. I added a label that is made visible if there is error.Currently if the database name is wrong the error message displays, however if I alter the connection string; example: If I misspell Server, the error label does not display and my application crashes when I try to click a control.How do I detect and display the error label, when there is no connection or a part of the string is misspelled or missing? Is this even possible? [code]
I am creating a desktop application in vb.net by using visual studio 2008 and using ms sql 2008 as back end for my database.As I am creating application on my own system I know my connection string and I have created database manually on my system.
What I want is, when user install application on its system, the database created dynamically at that time on his system and he must enter server name, username and password for ms sql server that application should store for future use.If not at installation, it should atleast check and create database, everytime the user open the application.
After 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
I using SQL Server 2008 R2 to connect with HTML page. I trying to connect HTML page with login to SQL Database. I have try called the Source but didnt work.
I'm not very good at deployment and I'm facing a problem: First Off, I'm using Vista. i have created a windows application in vb.net which has a database file named Customerdb.mdf in it. I have selected the database and in the property, I have selected Embedded Resource option. I have used the following connection:
I have this simple code to test that a DB is ready: Function testlocalcon() As Boolean Dim constr As String = _clconstr Try Using t As New SqlConnection() constr = constr & " ; Connect Timeout=1" [Code] ..... I do not want to execute a query, just to check the connection, but no matter what the time out parameter is ignored.
I have a query that is working fine on my local but when placed on the server it comes back with this error,
Server Error in 'Page' Application.
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. [Code]
Needing pointed in the right direction. I am fooling around with data sources and connections per homework and what I'm looking for is creating an SQL DB connection during runtime. I know that you can add a data source in design by going through the Wizard but what if one would want to create the connection, adapter, and dataset during runtime? Where would you start?
I have cruzed the net looking for some form of a tutorial to just get me started, I don't need it all completely outlined but I need to know where and how to start and what I need to declare the connection, string, and dataset as. I have seen a lot of information using VB6 but nothing that I come across seems to work.
My basic questions are:Do I have to create a seperate class for the database connection?How do I delcare the nuts and bolts of the connection,adapter, and dataset?If a seperate class isn't required then where is the most realistic place these items would be created?
i 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..
i am trying to make an employee database. The front end to be used is vb.net and the backend to be in MSACCESS. I have created some tables with employee details in foxpro6, this table is to be accessed through vb.net. I want to make an OLEDB connection also. What is to be tried for this. How can create a connection to MSACCESS(.mdb) with a link to the foxpro6 tables (.dbf). I tried to add the tables by clinking link table in MSaccess. But that didnt work out .
I want to add a new Data Source (so I can use it with Crystal Reports) but using mysql, I did this before.
In the left side under: 'Data Sources' and then choosed 'Add New DataSource'Then I choose: Database > Dataset I clicked in 'New Connection' and I changed the first box (with 'change' button (as you can see in the image attached)) to what is showed in the image (MySQL Database..)The problem is, as I type the first letter of any of the textbox's that are below (server, user, or pwd) it closes that form showing the previous form (where I clicked 'New Connection')
Have someone had this problem ?I had a connection there, but since I changed the project from 'Framwork 4 Client Profile' to 'Framework 4' (so I could have the Crystal Report Viewer) the connection has gone and don't leaves me create it again.PD: I'm using dotNetConnector (already Added as a Reference)
I have created an ACCESS database and I am trying to connect to it, i have gone into the ODBC and created a User DSN, I am using VB2005. When I try to connect to the database using my connection string, I get the fllowing error message: {"Keyword not supported: 'dsn'."}Here is my connection string:
Dim testsearch_connection As New SqlClient.SqlConnection("Dsn=MS Access Database;dbq=C:CesarAccessdatabase.mdb;driverid=25;fil=MS Access;maxbuffersize=2048;pagetimeout=5;uid=admin")
I am at college and am creating an app. however i have two main problems within my app. my app is a pizza app which will allow staff within a pizza shop to send the orders to the kitchen (this is just a listbox).but, the math doesnt work, the correct pricing isnt being displayed in the label for the orders for some reason. I have tried different ways of writing and placing my code but the result is always the same. also, i have five customers per table. if i select all the customers orders and click on send, only customer two's order will be sent. not any of the other customers, but if i just do customer one on its own, it works.
I am creating a VB windows form applications , the working can be summarized as users fills some form and data is saved in sql server database.Now the problem i am facing is that i have to deliver this as a setup file to someone, and that person will further distribute it to different users to run on their PC, what i am thinking is that the code once installed on other computers and executed will give errors because of the connection string of sql server db as it will not match with that computer . I know that if a distribute projects i can put connection string in app.config and every user can change it according to his/her machine .But as i am giving a setup file how to solve this problem
I am making a hangman clone for boredom and I can't seem to make the labels show up properly. Maybe I'm doing this wrong entirely and should just limit what's visible instead.
vb.net Imports System.IO Imports System.Text Public Class Form1
I'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
