EF：对数据类型映射的限制

Question

Is it possible to edit the error message of type of data on EF ?

For example, I've to display to the end-user that the value entered on ID's field must be integer .

public int ID { get; set; }

Thanks a lot !!

Answer 1

You can use Range validator:

 [Range(int.MinValue, int.MaxValue, ErrorMessageResourceName = "IDMustBeInteger",
    ErrorMessageResourceType = typeof (Resources))]

Answer 2

You can use a regular expression annotation to validate digits only

[RegularExpression(@"^\d+$",ErrorMessage="the value entered on ID's field must be integer")]
public int MyInt { get; set; }

Answer 3

It seems that you have two possible solutions for your problem:

1. You can write client validation to check this on client (using regexp or something else)

2. You can use custom ModelBinder to intercept default error.