How do I specify the maximum column length of a field using entity framework code first

c# .net entity-framework entity-framework-5 system.componentmodel

Kirsten Greed · Dec 23, 2012 · Viewed 37.7k times · Source

Is there an attribute I can use when creating a table ? I tried [StringLength] but it seems to be ignored.

 public class EntityRegister
 {
     public int Id { get; set; }
     [StringLength(450)]
     public string Name { get; set; }
 }

Answer

alternatively, you can manually do it on Fluent API

use HasMaxLength(450)

or if you want Data Annotation, use MaxLength and MinLength attributes

public class EntityRegister
{
    public int Id { get; set; }
    [MaxLength(450)]
    public string Name { get; set; }
}