如何从统计类型数据的数据库即时获取枚举中的数据？ 在asp.net核心mvc中

Question

Dept.cs

public enum Dept
{
    None,
    HR,
    IT,
    Payroll
}

above Dept enum data is already typed but want fetch data from database in this enum using asp.net core mvc

Model Department.cs

public class Department
{
    public int DeptId { get; set; }
    public string DeptName { get; set; }
} 

Answer 1

You can't change the value of an enum member. Enums are, by definition, groups of constants - which means that the values of their members is set at compile time and can't be changed.

From the Enumeration types (C# reference) page on Microsoft Docs:

An enumeration type (or enum type) is a value type defined by a set of named constants of the underlying integral numeric type.

This is why using Database data as enums is a bad idea - once the database data has changed, you'll need to change your code as well, recompile and redistribute it.