There are workarounds described in this StackOverflow Question, but they're not built-in and require some extra effort as well. config transformations on their own can't solve that problem easily. If you have test projects or re-use components in other types of applications like services or desktop apps. config transformations that can be applied that can mitigate some of this pain, but this only solves the problem for Web projects. In Web projects in Visual Studio there are. config file differences in general are problematic under source control. The problem is that on most developer machines there are differences in how connection strings - and even more specifically the server name - are referenced to access a database. Such a small thing, but I see that as a stumbling block for many projects starting up under source control especially for new developers.
Web config sql server connection string how to#
Next, you'll build a new MoviesController class that you can use to display the movie data and allow users to create new movie listings.One basic question that I see time and time again with source control is how to manage connection strings stored in. For example, we could name the database MyFilms.mdf.
You can name the database anything you like, as long as it has the. If you don't specify a connection string, Entity Framework will create a LocalDB database in the users directory with the fully qualified name of the DbContext class (in this case ). You don't actually need to add the MovieDBContext connection string. The name of the connection string must match the name of the DbContext class. We won't use the membership database in this tutorial, for more information on membership, authentication and security, see my tutorial Create an ASP.NET MVC app with auth and SQL DB and deploy to Azure App Service. The connection string you've added specifies a LocalDB database named Movie.mdf located in the App_Data folder. The first connection string is named DefaultConnection and is used for the membership database to control who can access the application. The two connection strings are very similar. The following example shows a portion of the Web.config file with the new connection string added: (Not the Web.config file in the Views folder.)Īdd the following connection string to the element in the Web.config file. Open the application root Web.config file shown below. For more information see SQL Server Connection Strings for ASP.NET Web Applications. In Visual Studio 2017, LocalDB is installed by default with Visual Studio.īy default, the Entity Framework looks for a connection string named the same as the object context class ( MovieDBContext for this project). However, a LocalDB database can be easily migrated to SQL Server or SQL Azure. LocalDB in particular should not be used for production with a web application because it is not designed to work with IIS.
SQL Server Express is not recommended for use in production web applications. Typically, LocalDB database files are kept in the App_Data folder of a web project.
LocalDB runs in a special execution mode of SQL Server Express that enables you to work with databases as. LocalDB is a lightweight version of the SQL Server Express Database Engine that starts on demand and runs in user mode.
In this section we'll explicitly add a connection string in the Web.config file of the application. You don't actually have to specify which database to use, Entity Framework will default to using LocalDB. One question you might ask, though, is how to specify which database it will connect to. The MovieDBContext class you created handles the task of connecting to the database and mapping Movie objects to database records. Is the preferred approach for new app development.Ĭreating a Connection String and Working with SQL Server LocalDB.We recommend you try the Razor Pages tutorial before the MVC version. Razor Pages is a new alternative in ASP.NET Core, a page-based programming model that makes building web UI easier and more productive. This tutorial teaches ASP.NET Core MVC with controllers and views. The new tutorial uses ASP.NET Core MVC, which provides many improvements over this tutorial. An updated version of this tutorial is available here using the latest version of Visual Studio.