ISqlModelMapper.TrackCreate<TModel>(TModel model) Method

.NET Standard 2.x

Tracks a database table insert operation. The data that will be inserted into the database table is cached in the TModel object. When ISqlModelMapper.SaveChanges method is called, a SQL INSERT statement will be first generated using the data cached in the TModel object and the mapping information defined in TModel class, and then executed.

Namespace: SnapObjects.Data

Assembly: SnapObjects.Data.dll

Syntax

  public ISqlModelMapper TrackCreate<TModel>(TModel model);

Type Parameters

TModel

The type of a model class.

Parameters

model TModel

A TModel instance used for adding a record.

Returns

SnapObjects.Data.ISqlModelMapper

Returns the current ISqlModelMapper object, which can be used for executing other methods.

Examples

The following code example demonstrates how to register a new student.

using Appeon.ApiDoc.Models.School;
using System;

namespace Appeon.ApiDoc.ISqlModelMapperExamples
{
    public class TrackCreateExample
    {
        private SchoolContext _context;

        public TrackCreateExample(SchoolContext dataContext)
        {
            // Sets the data context.
            _context = dataContext;
        }

        public void Example1()
        {
            var mapper = _context.SqlModelMapper;

            // Sets the properties of the new student.
            var newStudent = new Person()
            {
                LastName = "Senior",
                FirstName = "Letitia",
                EnrollmentDate = new DateTime(2019, 1, 1),
                Discriminator = "Student"
            };

            // Tracks the new student and saves changes to the database.
            var dbResult = mapper.TrackCreate(newStudent)
                                 .SaveChanges();

            Console.WriteLine("{0} record has been inserted into the database.",
                dbResult.InsertedCount);

            // Loads from database according to the person ID.
            var student = mapper.LoadByKey<Person>(newStudent.PersonID)
                                .FirstOrDefault();

            Console.WriteLine();
            Console.WriteLine("The new student:");
            Console.WriteLine("Name is {0}.",
                student.FirstName + " " + student.LastName);
            Console.WriteLine("Enrollment date is {0}.",
                student.EnrollmentDate.Value.ToString("yyyy-MM-dd"));

            /* The code produces the following output:
            
            1 record has been inserted into the database.

            The new student:
            Name is Letitia Senior.
            Enrollment date is 2019 - 01 - 01.
            */
        }
    }
}

Example Refer To

Model Class: Person

Applies to

.NET Standard

2.x