I am looking for a way to include a standart .MDF database to my C# project in Project Rider. I really like the way it works with Databases.
I know that Visual Studio uses Microsoft SQL Server databases, even for local ones, but i can't use a local file of .MDF type for an SQL Server in Porject Rider.
Is there a way to accomplish the connection? If not, what could be a good alternative for a local database?
Thanks!
You can't just use a MDF file directly, it must be used with SQL Server. If you are looking for some kind of local database just to be able to store some data and query it in SQL format, take a look at SQLite or look into Microsoft SQL Server Express or greater.
Related
Good day!
I'm trying to create a standalone C# project with a SQL Server database attached so I only need to install a SQL Server Compact Edition.
I managed to connect to the said database and do some basic display, add and delete.
What I'm trying to do now is to have an option for the users to backup and restore the database.
Upon checking the files of the project, the tables and stored procs are in script format. Is it possible for it to be backed-up the same as how .mdf database files are backed-up and restored?
I am also open to suggestions on ways on how to easily have a standalone project be developed. So far this is only what I got. Thanks in advance guys!
I'm creating an application with C# using SQL Server. I would like to know if it's possible to run the app on a computer which has no SQL Server. My database extension is .mdf
Using a .mdf file on PC without installing SQL Server or SQL Server Express is not possible. LocalDB version also requires LocalDB deployment.
However, you can use .sdf file but it does not support stored procedures. For this, you need to supply necessary dll files in the app folder.
Hell all,
I just attached a mdf file in SQL Server 2008, and everything is working correctly. Now I want to open visual studio, and query against the mdf file I just attached, is there a local version of the connection string that needs to go in to web.config?
If I leave SQL Server open will it act as an instance of the database while I am working on the site in Visual Studio? Or am I suppose to run it somehow?
Any info would be appreciated, thanks!
Just use Data Source=(local) to connect to the local instance of SQL.
On a separate note, if it is a small app, consider using SQL Compact instead.
Error -
mdf file can not be opened because it is version 655, this version
support 612 or earlier
Note :
I am created this database file using SQL Server 2005 and later that file is opened in SQL Server 2008 then automatically change version from 612 to 655.
But I currently want to open that file in SQL Server 2005.
Any solution is possible then help me.
Upgrading an mdf is a one-way process. You'll have to go back to a backup, an earlier version of the file or recreate it.
I'm guessing you don't have backups or an earlier version of the file (nobody posting "how do I get something back" on these sites knows what a backup is).
As far as recreating goes, you can attach the database to a SQL Server 2008 instance (or later) and then use SQL Server Management Studio to export the database into a blank database on an '05 instance.
From within Management Studio use the Generate Scripts Wizard. You can use this wizard to build queries that will reconstruct the database. Make sure you choose to script Schema and Data and set the destination server version as SQL Server 2005.
Alternatively, you can use the SQL Server Import and Export Wizard although it may not bring all your database objects across.
I installed Sql Server Express 2008 R2, and created a database file in Sql Server management Studio. Now From Visual Studio 2008 I try to connect, but it fails with error:
Unable to open the physical file
"C:.....mdf". Operating system error
32: "32(The process cannot access the
file because it is being used by
another process.)". An attempt to
attach an auto-named database for file
C:....mdf failed. A database with the
same name exists, or specified file
cannot be opened, or it is located on
UNC share.
...This is first time I use Express. I only used Sql Compact Edition before. Are there some settings here I need to figure out? It's not a duplicate name of other connection, and I have closed management studio completely. Still this error. What am I missing..?
If there are some settings, please give a little detail how I access them, as I'm not used to dealing with databases.
SQL CE is a file based database - SQL Express isn't.
It is a SQL Server - you can add it using the Server Explorer in Visual Studio.
The instance name is normally .\SqlExpress.
I faced the same issue today, and guess what daemon tools was the reason for this problem, so if you have installed daemon tools uninstall it and then try again.
Hope it solves your problem too.
You do not want to be connecting using the mdf. What you want to do is Open a SqlClient.SqlConnection and then using the SqlClient.SqlCommand execute queries on the database, and then read the information using the SqlClient.DataReader, just like you would with A SqlCE database.
If you are trying to add it to the Server Explorer you just need to connect to the database just like you would in SSMS (Management Studio) and then you can use it in your project.
If you created a database in SQL Server, you probably have it attached. In Visual Studio you cannot access this database as a file. You have to access it as an attached database (i.e. by its name).
Generally you can use database in files as well in Express edition. If you for some reason want to use file directly, then go to Management studio, right click on your database and detach it. Then you can connect to it from Visual Studio on file basis.