Question
Previously I have been working only with MySQL databases, it was quite a standard to use auto increment integer settings for the id fields.
Trying Entity Framework with SQLite database, I have noticed that EF is using a Guid structure identifiers by default and therefore requires string for such fields. In the result, we have a identifier looking like that:
a75d9d3d-6543-44fe-9fb8-f19f411503e5
public class AccountDataModel
{
/// <summary>
/// The unique Id
/// </summary>
public string Id { get; set; }
[...]
}
Two questions:
- Why is that? Is there any particular reason NOT to use the integer identifiers? Is one better than the other?
- Does EF allow to use integer idenfitiers? If so, how to enable that?
Accepted Answer
Simply change
public string Id { get; set; }
to
public int Id { get; set; }
and should change your Identity column type int with seed as 1. Use EF migrations to see the code generated for creating tables, keys and relationships.
Popular Answer
If you want Id to be int then you should use type int and not string.
public int Id { get; set; }
And for Guid you would use type Guid. Type string is rarely used for Id column.
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