Create A Connection To A Database?
Aug 5, 2009
I 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.
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Apr 17, 2009
I have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
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Apr 16, 2011
im 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?
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Jul 1, 2009
I have this code of sending sms but i dunno know how to make the connection for the below code to run my program.
[Code]...
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Nov 14, 2009
Okay i have been looking around for some tutorials on databinding by code but all the ones i find use vb's built in function to create the connection to the database and then the binding but i need to do it manually. I am totally new to databinding as in i only learned about it from a previouse thread and have been fiddling since.
[Code]...
So im kind of going blind here, i dont know whats going wrong or if im even using the correct dim statment for the binding,
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Dec 31, 2010
I installed SQLExpress 2008 on my computer this afternoon and have been trying to create a new database and open a connection to it. I found this code online and tried it:
Dim
conStr As
String =
"Server=MSSMLBIZ;Database=;Trusted_Connection = yes"
[code]....
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Sep 28, 2011
I have Visual Basic 2010 Express and SQL Server 2008 R2 (not Express) installed on my Windows 7 machine. In Visual Studio, I am attempting to create a Data Connection to a database in SQL server. Server Mgmt Studio is not running. When I attempt to add a connection in Database Explorer, to the AdventureWorks _Data database, I get the message "This file is in use. Enter an new name or close the file that's open in another program." There are no programs running except VB, except maybe for the SQL Server engine running the background.Please note that I can open and access tables within a database in code
within Visual Studio, I just can't add a connection in Database Explorer.Am I doing something wrong? I've been very frustrated on this issue for a long time
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Mar 13, 2011
friends i m a newer for dotnet...and i m a student i m creating a project with a simple database connection
i need to make a setup of that project but whenever i create a set up it wont connect with my database
it'll shows a error how to make a setup in vb.net with a project with a database connection
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Oct 6, 2009
how i can create a connection to a database when i open my program and then close that connection when the program closes, so that the user has a permanent connection while the program is running that can be used for multiple things depending on what the user decides to do.
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Jun 27, 2011
I basically want to make this in my application, so our technicians have an easier time installing our software. So far, I made a form with 4 text boxes: Server name, user name, password, and a combo-box to select a database.Everything was pretty easy until the database selection code. Microsoft's wizard is very efficient, there's no wait time when the database combo box is being filled.[code]That code gets the databases just fine, but obviously if an exception happens the whole screen locks up and it might take a while to recover depending on what the database error is. My question is, can I make mine just as cool/efficient as Microsoft's?
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May 21, 2009
I am trying to build a user control that will do exactly what the SQL 2005 Connect to Server interface do, eventually create a connection string and store in a app.config file. It should allow user to select server type, server name, authentication, user name and password. It should also automatically load available servers and domain login by default.
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Sep 25, 2009
I am using VB 2008 Express and have created an application that connects to a SQL database to populate a datagrid.The application is working properly on my computer but will not on others 'remote connection permissions' error.After some googleing I found that the express version is crippled to only work on local machines that use a database.If I purchase Visual Studio 2008 Standard Edition, import and rebuild my application, will my application be able to run properly on other PC's?
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Sep 23, 2010
i am using VS 2008 and i am following this walkthourgh in VS2003[URL]..in the part "To create a database connection and a dataadapter",say this 10 Drag these fields from Server Explorer onto the design surface.
Where is the design surface? if it is the place where i can drag and drop controls, i can not drag and drop fields of a table, how can i do it?
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Feb 5, 2010
Is 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.
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Aug 19, 2010
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
[Code]...
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Mar 3, 2012
I Want to develop a software like Yed.i just don know where to start.how we can create a workspace where i can drag and drop icons and create connection etc etc.
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Nov 7, 2010
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..
[Code]....
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Sep 14, 2010
I am using VS2010 and have been watching and learning from Beth Massi's great videos. I have built some test apps using her example of (under Server Explorer) - right clicking on "Data Connections" and selecting "Create New SQL Server Database, and in the server name just like she does, I type ".SQLEXPRESS", fill in the "New Database Name" and fill in my fields, build my tables, build a simple little windows form app. add new data source, etc. and everything works great. Then I try the "Add Connection" option again under Server Explorer and use the default (for me) of "Microsoft SQL Server Database file(Sql Client)", fill in a database file name (it creates a new one for me), "Test Connection" works, build my tables etc, and then build a simple little windows form app. add new data source and everything is great once again. Except I am not sure what is actually happening between these two options. Under the "Create New SQL Server Database option I see (in Server Explorer) a "myapp.dbo". Where is the actual database file? Under the "Add Connection" I see a "myapp.mdf" file in the Server Explorer. Also what happens when I "Publish" (deploy) my app? When I look under application files under Publish, I see the .mdf file listed as "Required" under the "Add Connection" option, but with the "Create New SQL Server Database" I don't see any database files listed? What is the difference between these two ways of creating a database for a VB Windows Forms Application?
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Jan 2, 2010
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
[Code]...
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Jun 17, 2011
I 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.
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Mar 19, 2012
I want to create a class in vb.net that make the connection to database.Also I need the way to use this class inside forms. I need a code example of both the class and the form call
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Jun 23, 2011
is there a way to create a program that has a SSH Connection to a VPS?
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Aug 31, 2011
How to Create a sql connection String in vb.net 2010? my DataBase Is Sql Express 2008
Name of Allah, Most Gracious, Most Merciful and He created the human
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Oct 29, 2008
creating a PPPoE Connection using VB6 code. I found allot of stuff related to creating a dialer but nothing related to how to create a PPPoE Connection.If any one can provide me some code on how to create a connection
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Jan 29, 2011
Can we use serial port object to create usb connection? How can we use Visual Basic to create USB connection
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Nov 28, 2011
I have being trying without success to create a program that can establish a SSH connection with [URL] on a changeable post with a set username and password. The program when done will configure IE proxy settings and establish a SSH connection to [URL] to allow the user to browse the internet without restrictions.
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Aug 10, 2009
I'm trying to create an ODBC in the registry using VB.NET. I had found some code on the internet(link below) to do perform this function in VB6, but have been unable to find a way in VB.NET.
[URL]
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Sep 20, 2010
Is there a (simple) way to connect a textbox, label etc. to a property in a class?I have a project with a complex series of dialogs to enter data into a list of a costum class describing an experiment with many parameters that are stored as properties (both simple variables such as strings and integers, but also more complex ones).I need both to be able to update the list of my experiment class, but also to go the other way to populate the dialogs from the class.It can of course be done outside the class and the dialogs in separate subroutines. This however, quicly becomes unmanagable and hard to maintain as the dialogs and experiment class is expanded with new elements.If there was a simple way to connect say a textbox or label in a dialog with the appropriate property holding the information it would make it much easier.
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Apr 6, 2010
I want to create a windowsform that reads an XML file called databases.xml and has the values:
<app:Entry app:Title="DisplayAlias" app:Database="databasename" app:server="databaseserver"/>
so there will be say 2 or 3 of these entries i want it to read the alias and display them in a drop down box then when select alias, connect to database (mssql) using values in database and server using windows auth......
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Jul 22, 2009
I have filled a DataSet from a SQL Server table and I have also set up synchronisation with a local copy (for offline use). The local copy is saved to a SQL Compact Editon database file.
1. Create the connection string to the SQLCE DB
2. Execute a stored procedure (a copy resides in the DataSet) against the SQLCE database
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