![]() In a nutshell this means creating a new class that derives from DbConfiguration in the same assembly as your DbContext class and then calling SetDatabaseLogFormatter in the constructor of this new class. This is done using code-based configuration. Once a new DatabaseLogFormatter class has been created it needs to be registered with EF. Its important to use this exact name including capitalization, so each namespace matches when code is copied. In the Configure your new project dialog, enter ContosoUniversity for Project name. It will likely not work well for viewing complex SQL.) Setting the DatabaseLogFormatter In the Create a new project dialog, select ASP.NET Core Web Application > Next. (Note that this code does simplistic removal of line breaks just as an example. ![]() To log output simply call the Write method which will send output to the configured write delegate. Var blog = (b => b.Title = "One Unicorn") ī().Title = "Green Eggs and Ham" ī(new Post ",Ĭ(Environment.NewLine, ""),ĭbCommand command, DbCommandInterceptionContext interceptionContext) Let’s add some simple query/insert/update code so that we can see some output: using (var context = new BlogContext()) This is all that is needed to log SQL to the console. For example, the following code will log SQL to the console: using (var context = new BlogContext()) All SQL generated by the current context will be logged to that writer. ![]() Most commonly it is used with any TextWriter by setting it to the “Write” method of that TextWriter. To view the generated queries from EF 6.x, use the property. Any command sent from the EF to the database can now be logged. The property can be set to a delegate for any method that takes a string. Applicable for EF 6.0 and above: For those of you wanting to know more about the logging functionality and adding to the some of the answers already given. Low-level building blocks for interception giving greater control/flexibility.A mechanism to customize the content and formatting of the output sent to the log.A Log property for the context similar to DataContext.Log in LINQ to SQL.This is most commonly used for logging SQL, but can also be used to modify or abort the command. Starting with Entity Framework 6, anytime Entity Framework sends a command to the database this command can be intercepted by application code. If you are using an earlier version, some or all of the information does not apply. ![]() discussed in this page were introduced in Entity Framework 6. EF6 Onwards Only - The features, APIs, etc. ![]()
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