如何将一个属性从一个类复制到另一个类？

Question

class person
{
[Required(ErrorMessage = "Please enter the FirstName of person")]
string FirstName{get; set ;}

[Required(ErrorMessage = "Please enter the LastName of person")]
string LastName{get; set ;}
}

class Student
{
string FirstName{get; set ;}
string LastName{get; set ;}
}

Person p = new Person();
Student s = new Student();

I want to copy the attributes from person to Student ; How can it?

Answer 1

You could use inheritance to make this easier.

class Student : Person
{

}

Answer 2

I assume that by "attribute", you actually mean "property"...

There's no "automatic" way to do it, you need to copy the values manually.

Person p = ...
Student s = new Student { FirstName  = p.FirstName, LastName = p.LastName };

Depending on the context, you could also use an object mapper like AutoMapper

Answer 3

If Student inherits Person , it will both have the properties, and both their attributes.

class Person
{
    [Required(ErrorMessage = "Please enter the FirstName of person")]
    string FirstName { get; set; }

    [Required(ErrorMessage = "Please enter the LastName of person")]
    string LastName { get; set; }
}

class Student : Person
{
}

Answer 4

You could use reflection like this :

foreach (var getter in s.GetType().GetProperties())
{
    var newData = getter.GetValue(newProject, null);
    var setter = p.GetType().GetProperty(prop.Name)
    setter.SetValue(p, newData, null);
}