
新建Model实体:
[Required(ErrorMessage = @"地址 1 为必填项!")]
[StringLength(, ErrorMessage = @"地址 1 不能超过99个字符")]
public string Address1 { get; set; }
给实体赋值判断输出:
var model = new ClassModel
{
Address1 = "",
}; var errors = new List<ValidationResult>();
var context = new ValidationContext(model, null, null);
Validator.TryValidateObject(model, context, errors, true); if (errors.Any())
{
MessageBox.Show(errors.Select(t => t.ErrorMessage).FirstOrDefault());
}