DataAnnotations - 不允许数字，或仅允许给定字符串

DataAnnotations - 不允许数字，或仅允许给定字符串

csharp
public class Person
{
    [RegularExpression(@"^[^0-9]+$", ErrorMessage = "属性不允许包含数字")]
    public string Name { get; set; }
}

csharp
public class Person
{
    [RegularExpression(@"^(red|blue|green)$", ErrorMessage = "属性只能是 red、blue 或 green")]
    public string Color { get; set; }
}

csharp
using System.ComponentModel.DataAnnotations;
public class Person
{
    [RegularExpression(@"^[^0-9]+$", ErrorMessage = "属性不允许包含数字")]
    public string Name { get; set; }
    
    [RegularExpression(@"^(red|blue|green)$", ErrorMessage = "属性只能是 red、blue 或 green")]
    public string Color { get; set; }
}
public class Program
{
    public static void Main()
    {
        var person1 = new Person { Name = "John", Color = "red" };
        var person2 = new Person { Name = "123", Color = "yellow" };
        
        var validationResults1 = new List();
        var validationResults2 = new List();
        
        var isValid1 = Validator.TryValidateObject(person1, new ValidationContext(person1), validationResults1, true);
        var isValid2 = Validator.TryValidateObject(person2, new ValidationContext(person2), validationResults2, true);
        
        Console.WriteLine("Validation results for person1:");
        foreach (var validationResult in validationResults1)
        {
            Console.WriteLine(validationResult.ErrorMessage);
        }
        
        Console.WriteLine("Validation results for person2:");
        foreach (var validationResult in validationResults2)
        {
            Console.WriteLine(validationResult.ErrorMessage);
        }
    }
}