How to automatically populate CreatedDate and ModifiedDate?

Question

I am learning ASP.NET Core MVC and my model is

namespace Joukyuu.Models
{
    public class Passage
    {
        public int PassageId { get; set; }
        publi         


        

Answer 1

Its too easy.Just you should do 2 step:

1.create model with these fields on top of createDate field:

 [Required, DatabaseGenerated(DatabaseGeneratedOption.Computed)]

2.After create migration and in its file befor update database edit column of this part and add defaultValueSql: "getdate()" like this:

 id = table.Column(nullable: false)
                    .Annotation("SqlServer:Identity", "1, 1"),
                CreatedDate = table.Column(defaultValueSql: "getdate()",nullable: false)