History Log

Manage entities history logging on database. All functionality are in the LogManager class, which exposes methods to perform logging actions.

Before starting, please deploy database proyect.

Defining entities

HistoryLog uses System.ComponentModel.DataAnnotations objects to map entitie keys. Entities must have at least one [Key] attribute in their properties. This is an example for an entity to perform logs:

public class SomeEntity
{
    [Key]
    public int Id { get; set; }

    public string Name { get; set; }

    public int Number { get; set; }
}

Logging entities

To log some entity just call the Log method exposed in LogManager class:

var lm = new LogManager("someApp", connectionString);
lm.Log(someEntity);

You can also register the user that performs action:

lm.Log(someEntity, someUserName);

Getting history

To get history call the GetHistory method exposed in LogManager class. Remember that history are obtained by Key, so application gets history of a particular entity:

var log = lm.GetHistory(someEntity); // returns history of the entity (by key)