ASP.NET Core MVC in Model
We hope that the final query-specific details from the Student student database table and displayed on a Web page, as shown below.
MVC model contains a set of classes and represents a logical data management of the data. Therefore, in order to show the students that we want to display the data, we use the following Student class.
public class Student
{
public int Id { get; set; }
public string Name { get; set; }
public string ClassName { get; set; }
}
Model class ASP.NET Core Models need not be located in the folder, but they would be a good idea to save the file in a folder called Models, because they are easier to find later.
In addition to the data representing the Student class, further comprising a model-based management model data. In order to manage the data that retrieve and save student data, we will use the following IStudentRepository service. At present, we have only one way ** GetStudent () ** by student ID queries. As the course progresses, we will add to create, update, and delete methods.
public interface IStudentRepository
{
Student GetStudent(int id);
}
The following MockStudentRepository class provides IStudentRepository implementation of the interface. We are currently on MockStudentRepository class Student data is hard-coded. In the video we are about to release, we will IStudentRepository interface provides another implementation, from the SQL Server database to retrieve data for the implementation.
public class MockStudentRepository : IStudentRepository
{
private List<Student> _studentList;
public MockStudentRepository()
{
_studentList = new List<Student>()
{
new Student() { Id = 1, Name = "张三", ClassName = "一年级", Email = "[email protected]" },
new Student() { Id = 2, Name = "李四", ClassName = "二年级", Email = "[email protected]" },
new Student() { Id = 3, Name = "王二麻子", ClassName = "二年级", Email = "[email protected]" },
};
}
public Student GetStudent(int id)
{
return _studentList.FirstOrDefault(a => a.Id == id);
}
}
In our application, we will focus on IStudentRepository programming interface, rather than a specific implementation MockStudentRepository. This interface abstraction is to allow us to use dependency injection, which in turn makes our application flexible and easy unit testing.
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