I'm about to send my Visual Studio project (C#, ASP.NET) and database (MS Access) to someone who will upload it into a server (don't know which one).
However, given that database file will be at the same map with the project, how do I prepare my connection string for that database? So far I worked local at my computer, including the database.
This is how my connection looks like in web.config, what changes do I need to make?
<connectionStrings>
<add name="DatabaseConnectionString"
connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Project\etc\DATABASE.mdb"
providerName="System.Data.OleDb" />
<add name="DatabaseConnectionString1"
connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\DATABASE.mdb"
providerName="System.Data.OleDb" />
</connectionStrings>
Any help would be greatly appreciated.
Related
I'm developing a Windows Forms application that I need to storage some data as a database in user's system, so that I would be able to access my database through Entity Framework. I mean I need to copy a database (tables should be created already) from the resources directory to specific directory. Then use it with Entity Framework. To be honest I have no idea. That's my problem!
I make sample fixed problem for all project when create winforms & localdb
You can create 2 ConnectionString in App.config file
App.config
<add name="DevConnectionString"
connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\MyDatabase.mdf;Integrated Security=True"
providerName="System.Data.SqlClient" /> <!-- *1* Use when publish project-->
<!--<add name="AppConnectionString"
connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename='E:\My Projects\MyDatabase.mdf';Integrated Security=True"
providerName="System.Data.SqlClient" />-->
<!--*2* Use for development-->
Sorry if this has been asked, but I've gone through all of the other posts I can find and everyone seems to be using an EDMX, and not a "production" database.
I get the following error:
System.Data.Entity.Core.MetadataException: Unable to load the specified metadata resource
when attempting to access my application. My connection string is as follows:
<add name="FormAssemblyEntities" connectionString="metadata=res://*/Models.Entities.FormAssembly.csdl|res://*/Models.Entities.FormAssembly.ssdl|res://*/Models.Entities.FormAssembly.msl;provider=System.Data.SqlClient;provider connection string="data source=server\instance;initial catalog=dbname;user id=userid;password=password;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
This works perfectly if I am running it locally and it connects to the edmx with the following connection string, but as soon as I put it on our UAT server and point it to the database, I get that error.
<add name="FormAssemblyEntities" connectionString="Data Source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\FormAssembly.mdf;Initial Catalog=FormAssembly;Integrated Security=SSPI;MultipleActiveResultSets=True;" providerName="System.Data.SqlClient" />
I really have no idea where to start. The database appears up to date, the user has access, and the server has access to the SQL server.
I have also tried replacing the res://*/ with res://FormAssembly/ and res://FormAssembly.dll/, but the former results in the same error, and the latter says the dll can't be found (the DLL is in the bin directory).
Any help would be appreciated.
Thanks,
Travis
In my case, the metadata part of my connection string was malformed.
The following connection string worked in my case:
<connectionStrings>
<add name="NorthwindEntities" connectionString="metadata=res://*/Northwind.csdl|res://*/Northwind.ssdl|res://*/Northwind.msl;provider=System.Data.SqlClient;provider connection string="data source=(local);initial catalog=Northwind;integrated security=True;multipleactiveresultsets=True;application name=EntityFramework""
providerName="System.Data.EntityClient" />
</connectionStrings>
I tried many things and saw a lot of information on the internet. It just doesn't work and I want to know what am I doing wrong.
I created a .mdf database in my App_Data folder and trying to connect it through Web.config.
my <connectionString /> looks like this:
<add name="Datab1" connectionString="Data Source=.\SQLExpress;AttachDbFilename=|DataDirectory|Datab1.mdf;Database=Datab1; Trusted_Connection=Yes;" />
And I also tried this:
<add name="Datab1" connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=E:\Secret\Secret\App_Data\Datab1.mdf;
Integrated Security=True;
User Instance=True"/>
The providerName="System.Data.Client" />gives me an error so I removed it.
What am I doing wrong here?
I finally fixed it by going to Server Explorer > Connect to Database > Data source to "Microsoft SQL Server Database File (SqlClient)" and Db file name browse to the .mdf file you want to use. Use Windows Authentication.
in the Web.config use this string:
<add name="Datab1" connectionString="Data Source=(localdb)\v11.0;AttachDbFileName=path\to\folder\of\database\Datab1.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
And replace Datab1 with your own database name of course. This worked for me so this question is solved!
I have completed my project in c#. I have used SQL Server Compact database (.sdf file). Now, when I compile and run, it works fine. But, how will I be able to run the application in other computers without configuring the connection to database?
In your App.config file add the following after </configSections>:
<connectionStrings>
<add name="NameOfYourConnectionString" connectionString="Data Source=.; AttachDbFilename=|DataDirectory|\student.sdf;Initial Catalog=student; Integrated Security=True" providerName="System.Data.SqlClient" />
</connectionStrings>
Edit Question:
Sorry about this basic question. This is a new technology to me.
I am using a c#, winforms application with sqlite.
Currently I have included sqliteDb in app_data folder, Also App.Config has the connection string:
<connectionStrings>
<clear/>
<add name ="RConnString"
providerName="System.Data.Sqlite"
connectionString="Data Source= C:\project1\R1\App_Data\RVEST_V1.DB"/>
</connectionStrings>
This RconnString is being accessed in .cs file.
string connString =
ConfigurationManager.ConnectionStrings["RConnString"].ConnectionString;
When I send it to client, How would I send the database. I mean how should I change the connection string.( Instead of referring to my local C:..)
Thank you
Sun
Try using relative path like this
connectionString="Data Source=App_Data\RVEST_V1.DB"