Change Connection String At Runtime?
Dec 2, 2009
I'm writing a windows form application using vs2008. I need to connect to different SQL server express database files during runtime. There is a "how to do" video showing a technique for this
[Code]...
and then in the Form1_load sub and before calling the data adapter to fill data, insert codes below:
Dim strConnectingSting = NewConnectionString
My.Settings.RunTimeConnectionString = strConnectingSting
The method works but only for the first database. I found once adapter.fill is called and the connection to a database is established, the connection can't be changed.To do what I want, I have to create a startup project to call my main project. When I want to change connection, close the main project and start again.
View 7 Replies
ADVERTISEMENT
Dec 19, 2011
I have a different thread on this, but I bumped it and I think it's been forgotten about. This is what I have:
[Code]....
View 5 Replies
Apr 30, 2010
I have read through some other post and haven't been able to find an exact answer that I am looking for. I have a connection string saved in my.settings that I am using. My database is residing on a server. Now I am going to have to install this application at more then one area and they will have the database on their server. What I am wanting to do is for the application when it is loading to search the network to find the database and return the connection string without the user having to do anything. I know with a web application you can search the machine you are on for the connection string without knowing its location but was hoping there was some feature like that to search the network to find it.
View 6 Replies
Jun 28, 2010
I need to be able to change the connection string of a strongly typed dataset at runtime. I have gone into the settings.vb page and written this code:
Namespace
My
'This class allows you to handle specific events on the settings class:
' The SettingChanging event is raised before a setting's value is changed.
' The PropertyChanged event is raised after a setting's value is changed.
' The SettingsLoaded event is raised after the setting values are loaded.
' The SettingsSaving event is raised before the setting values are saved.
[Code] .....
The way the code is suppose to work is that when a user logs in, the application gets the user's site ID (gvUserSite), then uses that to set the connection string. But when I log on with a SiteID of "21" it always uses the Case Else value. Also when I set breakpoints in settings.vb the application never stops on the breakpoints I set during runtime. As if the breakpoints were never set. Also if I put any code in the "MySettings_SettingChanging" in settings.vb I get a runtime error
"The debugger cannot continue running the process. Process was terminated.
View 10 Replies
Jan 16, 2009
You can change the connection string at run-time like this. You make the connection string setting available for writing as a separate property inside the MySettings class:
Partial Friend NotInheritable Class MySettings
Public WriteOnly Property RunTimeConnectionString()
Set(ByVal value)
[code]....
Then, in some place when the application is being initialized (before using any table adapters of typed datasets), write something like:
My.Settings.RunTimeConnectionString = My.Settings.ProductionConnectionString
Where ProductionConnectionString is a simple String setting. It is a User Scope setting so every user can change it (by assigning a value to it, similar to the code above) and save it by calling My.Settings.Save()This code works well for connection strings which were initially created in the main project and stored in it's settings (= app.config file).
The connection string in the app.config actually has a longer name: MyApp.MySettings.MyConnectionString.When you have a connection string stored in the app.config in a class library project, and reference that project in the main project, the app.config files will somehow be merged, so the class library has it's settings.The thing that don't know how to do, is change a setting from the class library at run-time. I could copy the connection string setting from the class library to the main project's app.config. I must keep the same name, which looks something like: MyClassLibrary.My.MySettings.MyConnectionString.Can the same principle I showed above be somehow applied to this second connection string?
View 3 Replies
Jul 18, 2011
I'm writing a Windows form application. I created a SQL database called myDB.mdf. The database/form connection was created using the wizard provided by VS2008. The connection string, table adapter, dataset, etc were all generated automatically. In runtime, I copied the database to several folders and I want to the application to connect to them one by one and do some data manipulation.
Here below are the relevant code I'm using:
Namespace My
Partial Friend NotInheritable Class MySettings
Public WriteOnly Property RunTimeConnectionString() As String
[Code].....
View 4 Replies
Mar 3, 2010
How to rewrite Webconfig connection string at runtime.I have input textbox for Server,UserName and Password.Is it Possible to read from these textbox?
View 1 Replies
Mar 30, 2009
I have specified my connectionstring in My.Settings
But when I want to change it at runtime I get the error: Property connectionstring is read only.
Is it possible to change the connectionstring at runtime???
I used the following code:
[Code].....
View 1 Replies
Oct 6, 2008
I'm sorry but Microsoft did not think about this very well. I have used the dataset wizard to connect to my sql server and the connection string was placed in the app.config file. The only problem with this is that you can not write to it nor change string at runtime. So I need a way for each one of my users to specify their connection either during installation or after installation. I would appreciate any help in this matter.
View 14 Replies
Jun 21, 2010
I've created two forms of which two separate datasets/tableadapters were created by adding a datasource and dragging and dropping the fields onto my form.I was testing the program using a db that was located on my local drive. Well after publishing the app to the users machines, I noticed that the binded information was still being pulled from my local machine and not the database that the user is working off of.I've set the connection modifier properties for both tableadapters to Public, and I have written the following attempting to change the connection strings:
Private Sub btnSaveSettings_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSaveSettings.Click
Dim pap As New frmPap
My.Settings.dbLocation = txtSettings.Text
[code]....
View 9 Replies
Dec 18, 2010
change (MS SQL) connection string (to dataset) on the start of program..
View 8 Replies
Jun 17, 2010
I have developed a windows form application using VB.Net with data access layer using LINQ-SQL. I want to allow the database to be configured from the application. I have created a form for input and save the input details in an XML file.
I need to know how to configure the LINQ to start using the new configured database on startup. I have read in one of the threads here about dynamic allocating the connection string with the following solution to include in every file where the data context is instantiated. [code]...
View 1 Replies
Apr 5, 2009
Is it possible change the connection string to a different database when the user changes the database they are using .i have a working program atm but i want to be able to change the connection with out having to change the code. the databases contain information from different years but all have the same tables queries etc.
View 2 Replies
Jul 23, 2008
I have created a very simple Visual Studio .net 2002 VB# program. It consists of form1 containing a DataGrid bound to an Access 2007 Database using OleDbConnection1, OleDbDataAdapter1 and DataSet11.The location address of the Database will change based on the user so, I need to make the connection string variable. Problem is inserting the following string variable "source=" & strFileLocation & ";" creates a fatal error
View 1 Replies
Aug 21, 2010
I am using vb.net and SQL server 2005 I have a project with database classes which are generated from database objects. That is I add a dataset to the project and drag and drop a database object onto it. The problem with this is that I have to give a connectionstring which is stored in the code. This is ok while developing the application. But runtime I want to use another connectionstring, both for security reasons and because each user of the application will correspond to a database user (SQL) and shall have a corresponding connectionstring. Is there an easy way to do this without having to restore to plain all datasets and do everything myself?
View 2 Replies
Nov 22, 2011
I need to change my [code]...
if i change it under settings it is working but i want to be able to change it in my running application, or when the application is opened for the first time i should be able to put in die path for the database.
View 2 Replies
Oct 8, 2008
I have a Windows application that uses typed datasets. When setting up the datasets, Visual Studio asks if you want to remember the connection.
Before filling the dataset, I programatically change the connection string of each table adapter so that it will connect to the remote database. Before this operation, it is set to the local database since that is the one I am developing on.[code]...
View 4 Replies
Mar 14, 2010
I'm trying to add a datagridview in vb.net, but it does not allow me to change the connection string or the database that should be imported to connect to it. The only thing that I'm seeing is the previous ms sql database that I connected with datagridview and everytime I click the new connection, the window closes and it leaves me with the datagridview with the previous connection that I have. And its not applicable because, now I want to connect it with mysql. Not ms sql. Its some sort of a cache like feature in vb.net, how do I get rid of it. so that I can add the new connection for mysql? Do I need to reinstall visual studio 2008?
View 1 Replies
Feb 8, 2012
i have a "Connection.vb" where all my Connection string stored and used by the entire program.i'm new to Crystal Reports.. and i want to changes its connection string based on the connection string i made... im using MS SQL 2008.. SQL Server Native Client 10.0 OLE DB Provider..
and here is my connection string."Provider=SQLNCLI10;Server=....SQLEXPRESS;Database=Blah;Trusted_Connection=yes"
i tried to google it.. but they are using different language, different database, and complex examples.
View 1 Replies
Jan 25, 2010
i have a code which has the connection string as driver. dim s as string = "Driver={SQL Server}; Server=xxxSQLEXPRESS; Database=dbRegister; Trusted_Connection=yes" i need to change that to - "data source=1.2.3.4;user id=xx;password=xxxxx;initial catalog=xxxxx;Connect Timeout=30" when i just change the text it gives this error - "[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified" how do i declare the datasource?
View 2 Replies
Jun 13, 2011
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
View 1 Replies
Jun 30, 2011
In my earlier project I was able to change the connection string during the app settings loaded event and it was successfully. When I try to do the same for a code library project, I am not getting the system.configuration.connectionstringsettings to work. Could you please tell if there is a work around for this, or else it is always better to write the sql code instead of depending on the adapters etc.
Additional information: Clients App is WPF with Vb. Database is SQL Server 2008 Code Lib would only be on server, slq connectiona and data retrieving and saving actions are stored in classes in code lib only. Code Lib would be used with WCF, wcf is used to share the classes only and classes have the data. WCF is hosted as a windows service on server used by NET.TCP
View 2 Replies
Jan 21, 2012
and advise how I can change this connection string at run time. This is going to be on Client's computer and my application will need to change the name of computer after user enters it.
View 1 Replies
Jan 30, 2012
I am writting an application and I used Wizard to create DataSets which auto-created their own xml code. This code uses the saved in My.Settings Connection String. Being a setting with an unchangable 'Application' scope i cannot change its value at runtime.
The problem is that when I install the Application to my customer the Connection String will have to change (maybe more than once). So is there a way to change the Connection String used by these objects at runtime ?
View 1 Replies
Sep 20, 2011
i have a code which has the connection string as driver.dim s as string = "Drr={SQL Server};Server=xxxSQLEXPRESS; Database=dbRegister; Trusted_Connection=yes"i need to change that to"data source=1.2.3.4;user id=xx;password=xxxxx;initial catalog=xxxxx;Connect Timeout=30"hen i just change the text it gives this error -"[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified"
View 13 Replies
Jun 11, 2012
I have a VB.NET application that used LINQ To SQL. Right now, I am using a single server and it is working properly. My problem right now is that my application will be used in another branch and with another server. I have to make the application able to change the connection string according to their server IP
View 1 Replies
May 7, 2009
I made an application that was used by one person only, but now my boss told me that this application it'll be used by all company.I made the application with a dataset that have the datasource in a access database that's installed with the application. The user can add, delete and change values in the database, so i had to put the database in a sql server to everyone see the changes.There's someway to change the dataset datasource/connection string?
View 9 Replies
Mar 9, 2012
I was developing a website on development server. I created a user authentication and access rules on my website. So VS created Aspnetdb. I also created a login page using in built login control. I deny all the anonymous users to the page so it will redirect to login page everytime.
Now that I moved aspnetdb and my website to the remote server to the new hosting I bought. I also merged few tables into aspnetdb. But I don't know how to change the connection string for that login control. I didn't write any code myself for that and there is no connection string in the web.config to connect to aspnetdb. For other pages where I created from scratch myself, I changed the connection strings to the aspnetdb and it works fine, but Login control don't.
View 1 Replies
Aug 25, 2009
How do I assign a My.Settings.Item connection string to cmd.Connection connection string value?
Dim cmd As New SqlCommand()
cmd.Connection = My.Settings.Item("csStaffHoursWorked")
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "spSaveDeltekImport"
View 3 Replies
Jun 1, 2012
I have a project where I added visually and successfully a datasource of MySql. I binded a datagridview with a table.
But, how do I change programatically the password, ip or user to connect with the MySql server? Because it can change at any time, so I can let the user change these values.
View 7 Replies
