Read (Import) JSON data in ASP.Net Core

Hello everyone,

How to import json in asp.net core

However i would like to do same operation from json to this method seed data.

Because i have to import large number data for example i would like to import list of countries from json.

How can i do it in asp.net core?

in my asp.net core application normally i seed data below way 

    public class AcDispatchingMethodConfiguration : BaseEntityConfiguration<AcDispatchingMethod>
    {
        protected override void ConfigureEntity(EntityTypeBuilder<AcDispatchingMethod> builder)
        {
            builder.Property(e => e.Description).HasMaxLength(100).IsRequired();
            builder.Property(e => e.Id).ValueGeneratedNever();
            builder.Ignore(e => e.AcDispatchingMethodEnum);
            builder.ToTable("AcDispatchingMethods");

            SeedData(builder);
        }

        private void SeedData(EntityTypeBuilder<AcDispatchingMethod> builder)
        {
            builder.HasData(
                new AcDispatchingMethod
                {
                    Id = (int) AcDispatchingMethodEnum.None,
                    Description = "NONE",
                    CreatedAt = DateTime.Now,
                    CreatedBy = "SYSTEM"
                },
                new AcDispatchingMethod
                {
                    Id = (int) AcDispatchingMethodEnum.Email,
                    Description = "EMAIL",
                    CreatedAt = DateTime.Now,
                    CreatedBy = "SYSTEM"
                },
                new AcDispatchingMethod
                {
                    Id = (int) AcDispatchingMethodEnum.Mail,
                    Description = "MAIL",
                    CreatedAt = DateTime.Now,
                    CreatedBy = "SYSTEM"
                },
                new AcDispatchingMethod
                {
                    Id = (int) AcDispatchingMethodEnum.Web,
                    Description = "WEB",
                    CreatedAt = DateTime.Now,
                    CreatedBy = "SYSTEM"
                }
            );
        }
    }