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• Sql server connection string examples code#

The following snippet shows how a connection string can be added to an appsettings. You may prefer to keep your connection strings in configuration files, so that you can change them without needing to recompile the application, or use the features that allow different configuration settings to be used based on the environment. The examples so far show connection strings being passed directly to the DbContext. database=myDb trusted_connection=true ")) NET Core applications, configuration is more likely to be placed in the Startup class via the ServiceCollection's AddDbContext extension method: public void ConfigureServices(IServiceCollection services)

Sql server connection string examples code#

If you choose to set the connection string in the OnConfiguring method, this will override any other configuration. postgres alter column set not null code example mysql all columns of table code example microsoft sql server and management studio code example mysql import sql file. database=myDb trusted_connection=true ") The UseSqlServer method configures the context to use a SQL Server database, and takes a string representing the connection string as a parameter: protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) Most providers include convenience methods that extend the DbContextOptionsBuilder type, so that configuration can be simplified. The OnConfiguring method is called every time that an an instance of the context is created. The DbContext type has a virtual OnConfiguring method which is designed to be overridden so that you can provide configuration information for the context via the method's DbContextOptionsBuilder parameter. There are a number of ways to achieve this. Once you have constructed your connection string, you meed to make it available to your DbContext. database=Test trusted_user=true Ĭonnection strings for most providers, are documented here. The following example shows a connection string for a SQL Server database named Test, attached to the default, unnamed instance of SQL Server: server=. The information is provided as key/value pairs, separated by semi-colons. This information varies from provider to provider, but will usually include the name and location of the source, and optionally some means of authenticating the user.