The NotMapped attribute is used to specify that an entity or property is not to be mapped to a table or column in the database. In the following example, the AuditLog class will not be mapped to a table in the database:
language-csharp
|
public class Contact
{
public int ContactId { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public AuditLog AuditLog { get; set; }
}
[NotMapped]
public class AuditLog
{
public int EntityId { get; set; }
public int UserId { get; set; }
public DateTime Modified { get; set; }
}
In this example, the FullName property will not be mapped to a column in the Contacts table in the database:
language-csharp
|
public class Contact
{
public int ContactId { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
[NotMapped]
public string FullName => $"{FirstName} {LastName}";
public string Email { get; set; }
}
Fluent API
The Fluent API equivalent to the NotMapped attribute is the Ignore method.
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