With entity framework, how do I force a sql datatype for my string member

I have a product class, for which the ManufacturerNumber gets generated as nvarchar(max) - how would I go about forcing the code-first framework to make it nvarchar(255)

开发者_运维问答public class Product : BaseEntity
{
    public string ManufacturerNumber { get; set; }
}

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Decorate the property with StringLength attribute.

public class Product : BaseEntity
{
    [StringLength(255)]
    public string ManufacturerNumber { get; set; }
}