一个人如何重用相似但不同的类属性

Question

I would like to know the best practice to handle the below situation in C#.NET:

I have a Table Client

ClientId
LastUpdatedBy
LastUpdatedOn

So I created a class having properties

class Client
{      
    Guid ClientId {get; set;}    
    Guid LastUpdatedBy {get; set;}  
    DateTime LastUpdatedOn {get; set;}
}

Similarly, I have a Table Project

ProjectId 
LastUpdatedBy   
LastUpdatedOn

So I created a Project class having properties:

class Project
{     
    Guid ProjectId {get; set;}    
    Guid LastUpdatedBy {get; set;}  
    DateTime LastUpdatedOn {get; set;}
}

Likewise, I have around 100 more table and all possess these LastUpdatedBy and LastUpdatedOn columns.

In the code, is it right to create a property of these columns in each class or is there a way, I can generalize these properties and utilize those in each class? If so, An example would be highly appreciated.

Answer 1

Well simply rename ProjectId and ClientId Id and use a base abstract class

abstract class ClassBase
{
     protected Guid Id {get; set;}
     protected Guid LastUpdatedBy {get; set;}
     protected DateTime LastUpdatedOn {get; set;}
}

Then:

class Client : ClassBase
{
}

class Project : ClassBase
{
}

Answer 2

That's what inheritance is for:

public class BaseEntity
{
  Guid LastUpdatedBy {get; set;}  
  DateTime LastUpdatedOn {get; set;}
}

public class Client: BaseEntity
{
  Guid ClientId {get; set;}    
}