I just want to know, What parameters or attributes should be taken in connection string so as to handle high traffic enterprise applications? Like in general we use server, initial catalog, userid, passwd. Some times we add timeout , and in some scenario pool etc. But i don't know what attributes should i take in as my common practice apart from above.
View 3 RepliesIs 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.
Ok so I have been working on this code for awhile now and it is a huge mess. At the moment I have a problem that if the code is left for a time it will not accept any more connections on the server. I know that it is not accepting any as it is talking to a PLC and I can see that the TCP connection fails. If, however, the PLC transmits to it all the time it does not have a problem. The PLC connects -> Transmit -> Disconnect.I have tried the connection through a switch and via a direct connection. This time I am going to attach the entire code but the main part that you want to look at is the TCP on the main page. I am attaching it all in case there is something else in the code that could be causing the issues
View 2 RepliesHow 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"
Between ODBC and OLEDB providers, which one is more flexible at both the application level, and at the report level using crystal report?
View 1 RepliesWhat is the connection string for connecting MS Access 2010 (.accdb) database in VB.net.
View 3 RepliesOr there's another way to make it, without adding a Connection String?
View 3 RepliesMy Ms-Access .mdb file is on my website. It is in the App_Data Folder
The current connection string is:
OleDbDataAdapter Da = new OleDbDataAdapter("Select * from SerialNo",
new OleDbConnection(@"provider=microsoft.jet.oledb.4.0;
data source=ftp://ftp.WebsiteName.com/App_Data/SerialNo.mdb"));
Where am I making a mistake in above connection string?
Note: CRs added in the code for better readability
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 RepliesMy query is not the straightforward connection to MS Access.I am using a third application that places all data in an Access database BUT recently they changed the database so that it doesn't end in '.mdb', instead in another suffix: '.accdb'.The database is still an Access database but I cannot connect to it using the connection strings:[code]Previously I was able to use the second connection when the database name ended in '.mdb' (Database Name.mdb).
View 1 RepliesI have an application that will be called by a database(this application is called from an access shell that uses SQL Server Tables), my question is do I need to provide a connection string to write to the database or since it is already open I can just pass the insert statement. If I am to provide a connection string do I use OLEDB JET 4.0 or ?
View 4 RepliesI have just written an application for myself and a few other users to use .rdp to connect to a number of servers, by clicking on the appropriate button. In the full version of the program I have two sets of connections one for when we are inside our vpn, which uses local ip addresses and DNS names; and the other which uses the external IP addresses and DNS names.This works quite well; if the user has stored credentials on their pc for the connection they connect straightaway; and if they don't the .rdp dialogue opens up with the server name/address filled in, ready for them to edit the rest of the required information.The problem for me is that this means I have to code 43 different Private Subs and then link the buttons; and I was hoping that instead of individually coding each connection, I could get the users to:Select by an option button whether the connection was internal or external
View 3 Replieshow to find connection string of any database or any server like, access or sql or Oracle?ans:-to find connection string.first open the new notepad.don't write anything it it.just save any side like my document,or Desktop with any name and give it's extension. " UDL ".after there will be one PC type folder will be created. double click on that folder and go to first tab that is Provider.select your provider like Access, Sql etc. and go to Next tab that is connection. if access then it will tell you enter database name or you can locate your database .mdb file and if it is sql then it will ask you your server name, authentication and database name. select it and click on text connection it will give message connection is OK.then close the file and further open that file with notepad you will get your connection string.
View 2 RepliesHow to use Connection string with VS 2010 during form design? Actually i added database through Data -> Add new Data Sources.And When i publish the project How to publish database too? [code]
View 3 RepliesI just want to know what is your suggestion about storing database connection strings in .NET? I am using My.Setting usually, but now I am facing with versioning of my application. When I upgrade my application to higher version the value in My.Setting has been changed, it didn't remain as user has set before, but changed base on my machine's setting. eg. the value in My.Settings Version 1.0.0.0 (User's computer) is 'ABC' When I develop again some new feature on my machine and set its version to 1.0.0.2, of course the connection string in my computer's My.Setting file is different with User's computer's My.Setting. So when I copied my recent updated file to use's computer, then run the application, the application read the new My.Setting file from my computer but not from their computer. the value in My.Settings Version 1.0.0.2 (Developer's computer) is 'DEF' Therefore I have to reset and reset their connection strings onve I updated their application, that's too annoying?
View 16 RepliesDim con As New OleDb.OleDbConnection
Try
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = D:\project\login.mdb"
con.Open()
str = "insert into table1 values(" & Text1.text & ",'" & Text2.text & "')"
cmd = New OleDbCommand(str, con)
cmd.ExecuteNonQuery()
[Code] .....
If I insert integer value it will be updated in database every thing is ok but when I want to write some string in my textboxes and want to send them I get connection error.
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.
I will be developing a program using visual studio 2008 with ms access 2007 as my database. What I only use is this type of connection string: "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:mydatabase.mdb;Jet OLEDB:System Database=system.mdw;" but i was asked if it is possible to put the database in sharepoint and I haven't even tried it before. The case is like this, the program that i will do would be installed on some computer units of different branches of the company then the database should be accessible through sharepoint so that every users can access the most updated database.
[Code]...
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 RepliesI would like to develop a Windows Service in VB.NET to monitor different SQL databases running in different servers. The user will enter/define connection string for each database.Also he/she will define connection interval.
For example, database A needs to be checked in every 5 mins and database B needs to be checked every 24 hours.
What is the best approach for this project?
I am newbie in Visual studion 2010. May i know how do i setup the connection for a mdb file. Below is my code and i have encountered an error. the error message is "A first chance exception of type '[URL]' occurred in WindowsApplication1.exe".
[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.
1.is it possible to save the database connection string to the textfile so that user would be able to know where the database is stored?
2. Any way to let the user decide where the database is stored? Since usually we, the programmer write the database connection string ourselves..
I have never used Sql Server before. I have Visual Studio 2010 and whatever SQL server that comes with it but am having trouble connecting to it.DO I have to set anything up beforehand in sql server. I used the connection string to connect to the northwind database from Microsofts website but it says it can't connect
View 3 RepliesI know this topic has been addressed a million times but please help me out. I have read so many articles on HOW TO encrypt and decrypt the app.config file but I need to know WHEN and WHERE I should encrypt it.
The problem arose because we found an AppName.exe.config file on a users computer and the database username and password was clearly visible. I understand that the .config file gets created during the VB app install process and is used
by the application. I then learned about the aspnet_regiis.exe tool and ran it on the app.config file inside my VB project. I am guessing that was the wrong thing to do.
When I now install the app on user desktops, it gives an error stating failed to decrypt the connection string. Also, when one of my other developers attempts to open the project in his copy of visual studio on his computer, he receives an error when trying to access the setting portion of the project properties. We store all of our projects on a file server and any developer can access the projects via a mapped drive on their computer.
So how am I supposed to encrypt the .config file. If I can't encrypt the App.config file in the development environment, then I'm guessing I have to perform the encryption on the users PC during the install process? How do I do that? Or is that what I am supposed to do?
Just for reference, here is the aspnet_regiis command I ran.
aspnet_regiis.exe -pef "connectionStrings" S:ProjectsDevelopmentVB.netPTPUSourceCodePTPU -prov "DataProtectionConfigurationProvider"
One last thing, maybe it's my misunderstanding of the issue but if this problem has existed since .Net 2.0, why has an option not been built into the development studio to encrypt connection strings?. This would seem to be a very common issue, even their own dataset wizard creates connection strings that are clearly readable.
I would like to enable my app to run from a central database, but I dont want to recompile should the DB server change. Are my only two options saving the connection string to an XML file or the registry?
If so I think the XML file will probably be the way I go at least for me. I dont really want to mess with the registry. I just wanted to check what my options are.
I got this Error Message while I try to preview the records in Dataset Designer:"The connection string could not be found or Data provider associated with the connection string could not be loaded"
Here is my dataset.xsd code
<Connections>
<Connection AppSettingsObjectName="MySettings" AppSettingsPropertyName="loginConnectionString1" IsAppSettingsProperty="true" Modifier="Assembly" Name="loginConnectionString1 (MySettings)"
[code]....
I am trying to follow an example in the VB 2010 book and the author has set up the local server using a named instance of SQLEXPRESS and uses mixed mode authentication with a sa login and wrox as the password the code is then
[code]...
I am using the Express server initially set up for windows authentication (pubs is one of 6 databases on it) but no matter what I seem to try I can not connect
[code]...
I have already connected my database and have completed multiple forms and reports.Just discovered that I missed adding ONE field in an Access table.Since it is attached how can I add a field to the database without disconnecting it? If I do disconnect it and reconnect will I have to redesign all my forms and reports?
View 1 RepliesI've always used this approach while implementing data layer DLL for web application:
1) put datasets into the dll project
2) use a helper class with a method like this:
public shared sub settCnnStr(strconnhere as string)
My.Settings.Item("connectionString") = strconnhere
end sub
3) when I need to use the dll I call a method like this (usually into global.asax):
xxxxxxx.helper.setCnnStr("yyyyyyyyyyyyyy")
This method always worked for me nicely but I'd like to know if this method could have serious drawback or if there's a better solution.