Entity Framework 面试题与答案

问题 26. How can you execute stored procedures in Entity Framework?

You can execute stored procedures in EF using the context.Database.SqlQuery method or by creating a method on your DbContext that calls SqlQuery or ExecuteSqlCommand.

问题 27. What is the purpose of the [MaxLength] attribute in Entity Framework?

The [MaxLength] attribute is used to specify the maximum length of a string or binary property when creating the database schema.

Example:

[MaxLength(50)] public string Name { get; set; }

问题 28. What is the purpose of the AsSplitQuery method in Entity Framework?

The AsSplitQuery method is used to enable split queries for a LINQ query, allowing EF to generate separate SQL queries for different parts of the LINQ query.

问题 29. Explain the purpose of the ChangeTracker in Entity Framework.

ChangeTracker is a property of DbContext that keeps track of the changes made to entities, allowing you to inspect and revert changes before saving to the database.

问题 30. What is the purpose of the ToListAsync method in Entity Framework?

The ToListAsync method is used to asynchronously execute a query and return the result as a List.

Example:

var result = await context.Entities.ToListAsync();