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!
Related
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.
I'm developing a Sql database module in C# and It's my first project in C# so it's really confused.
Now I exported to a dll file and have to registered it and create database by script manually. So are there any method that I can package it into a installation file that auto register object and create database? I've search but it only have a option publish in visual studio with Application, Not a Library.
Extra Question: I'm using visual studio 2015. My database is just local database and I read somewhere that Visual Studio have a local database format is SQL CE. But I find only template that create mdf database, and I think it's new local database format, isn't it?. I try to attach this file to Sql Management Studio in remote machine, but it seem like that this mdf file have some static link to my development computer path and it can't be attached. I've to switch to Server database, which is created from another SQL project and generate script to create database. So are there any method that I can deploy local database without script file? And is it that connect String is the same for all version?
My database is small So if it need to convert to other format, I think I could try.
I am going through a tutorial that is adding a simple local database to a C# console application but when adding a new item to the solution I cannot find the Local Database to insert a .sdf database file. I have tried to download SQL Server Compact 4.0 but upon installation it says that SQL Server Compact 4.0 is already installed on the computer. Below is a screenshot of the available data resources I can add.
How would I be able to add a local database file to my solution?
You should use the ADO.NET Entity Data Model and use Entity Framework to generate models from your database. You can select your local database there.
Eventually found this question that has already been answered that solved my problem
How to connect to LocalDB in Visual Studio Server Explorer?
I created a project a while ago and transferred it to my other computer, and now it's stopped working. I can't manage to fill the grid with the data from the .mdf.
I have struggled a while with this problem and I can't manage to solve it. I would appreciate if someone here could download the .rar and help me solve this problem.
http://www.filefactory.com/file/3wabxfsyxign/n/CDapplikation_uppgift_rar
.mdf are SQL Server data files; for working with those files, you must have some version (other than Compact Edition) of SQL Server installed
So to get this data out:
check to see what version of SQL Server you have installed
fire up the management tool, e.g. SQL Server Management Studio (possibly the Express version which you can find by searching on Google or Bing and download for free from Microsoft)
attach the .mdf file to the SQL Server under a logical name, so that you can use it
now you can access it using raw ADO.NET or Entity Framework or whatever other data access technology you wish to use
I'm using Visual Studio 2005. I create a project, not Web Project, just Windows application.
I remember that Access Database File can be added into a project. I don't need connection to server, data can be retrieved. And I want to do the same thing with SQL Database file.
I did the following steps:
Right-click on project.
Choose Add An Existing Item
Browse for *.mdf file.
DataSource Config Wizard appears and it displays this Message
An error occurred while retrieving the information from the database:
Failed to generate a user instance of SQL Server due to a failure int starting the process for the user instance. The connection will be closed.
I need help to add mdf file into my project.
To start with, and MDF file can be read only by an instance of SQL Server. If you deploy MDFs, then your application must either connect to a SQL Server provided by your end-user during setup, or it must deploy its own instance, in the later case a SQL Server Express Edition instance. See How to: Install SQL Server Express. With Visual Studio 2008 you can add a prerequisite to your own application setup MSI, see "Installing" the SQL Server 2008 Express ClickOnce Bootstrapper for Visual Studio 2008 SP1.
A second issue is that, despite the wide belief of the contrary, distributing the MDF alone without the LDF can land you into a world of pain. You can end up distributing an inconsistent MDF that needs the LDF to finish recovery and get into a consistent state.
But a more serious issue is your plan to deploy binaries (MDFs) instead of scripts for database deployment. This is doomed to fail. As soon as you'll plan to release v. 1.1 of your application you'll face the non-trivial problem of how to replace the user MDF (which now contains data added by the user) with your new MDF. This is why is much much better to deploy upgrade scripts always, and forget about the MDF in your project.
You can read from an Access file (*.mdb) in your app without any other requirements because the core Jet engine used by Access is included as part of Windows — it's built in. Sql Server is not included as part of Windows, and so you cannot use an *.mdf file in your app unless Sql Server has been installed and you have appropriate permissions for it.
It is possible to distribute either Sql Server Express Edition or Sql Server Compact Edition (recommended) with your app. Another option is SqlLite, which has a fully-managed database engine available.
An .MDF is a sql server DB, not MS Access. MS access is .MDB. You cannot read an .MDF on its own. It needs a log file (.LDF) as well. If you attach it to your local instance, it will create a new one for you. You can then connect to that DB.
To solve deployement problem (Updated version of your .mdf file and Code), you can have a utility in your application which can create .xls file of every table(Backup your database) which you used in your application. Now you can easly import those .xls file in SQL Server and create new version of .mdf file and attach same file in latest code.Now new release of your app ready to deploye..!