Select View > SQL Server Object Explorer to open the SQL Server Object Explorer window. You can view the connection string for the SampleDatabase.mdf file by opening the Properties window of the data connection: On the Choose your Database Objects page, you see a message that says the database doesn't contain any objects. On the Save the Connection String to the Application Configuration File page, choose Next. On the Choose Your Data Connection page, select the SampleDatabase.mdf file in the drop-down list, and then choose Next. On the Choose a Database Model page, choose Next to accept the default (Dataset). On the Choose a Data Source Type page, choose Database and then choose Next. The Data Source Configuration Wizard opens. To install them, open Visual Studio Installer and choose Modify (or More > Modify) next to the version of Visual Studio you want to modify. NET desktop development and Data storage and processing workloads installed in Visual Studio. To complete this walkthrough, you need the. mdf file and add tables and keys by using the Table Designer. You can also create a database by executing Transact-SQL statements in the SQL Server Object Explorer tool window in Visual Studio. You can use Visual Studio to create and update a local database file in SQL Server Express LocalDB. Entity Framework provides a more natural way to work with tabular data as object models, and it has a simpler programming interface. NET applications use Entity Framework Core. Although datasets have proven to be a very successful technology, we recommend that new. They are especially useful for applications that enable users to modify data and persist the changes back to the database. NET technologies from the early 2000s that enable applications to work with data in memory while the applications are disconnected from the database.
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