微软企业库验证 Validations

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Practices.EnterpriseLibrary.Validation;
using ValidationResult = System.ComponentModel.DataAnnotations.ValidationResult;

namespace Blackice.Suite.Domains.Validations
{
    /// <summary>
    /// 企业库验证操作
    /// </summary>
    public class Validation : IValidation
    {
        /// <summary>
        /// 验证
        /// </summary>
        /// <param name="target">验证目标</param>
        public ValidationResultCollection Validate(object target)
        {
            var validator = ValidationFactory.CreateValidator(target.GetType());
            var results = validator.Validate(target);
            return GetResult(results);
        }

        /// <summary>
        /// 获取验证结果
        /// </summary>
        private ValidationResultCollection GetResult(IEnumerable<Microsoft.Practices.EnterpriseLibrary.Validation.ValidationResult> results)
        {
            var result = new ValidationResultCollection();
            foreach (var each in results)
                result.Add(new ValidationResult(each.Message));
            return result;
        }
    }

    /// <summary>
    /// 验证操作
    /// </summary>
    public interface IValidation
    {
        /// <summary>
        /// 验证
        /// </summary>
        /// <param name="target">验证目标</param>
        ValidationResultCollection Validate(object target);
    }
    /// <summary>
    /// 验证结果集合
    /// </summary>
    public class ValidationResultCollection : IEnumerable<ValidationResult>
    {
        /// <summary>
        /// 初始化验证结果集合
        /// </summary>
        public ValidationResultCollection()
        {
            _results = new List<ValidationResult>();
        }
        /// <summary>
        /// 验证结果
        /// </summary>
        private readonly List<ValidationResult> _results;

        /// <summary>
        /// 是否有效
        /// </summary>
        public bool IsValid
        {
            get
            {
                return _results.Count == 0;
            }
        }

        /// <summary>
        /// 验证结果个数
        /// </summary>
        public int Count
        {
            get
            {
                return _results.Count;
            }
        }

        /// <summary>
        /// 添加验证结果
        /// </summary>
        /// <param name="result">验证结果</param>
        public void Add(ValidationResult result)
        {
            if (result == null)
                return;
            _results.Add(result);
        }

        /// <summary>
        /// 添加验证结果集合
        /// </summary>
        /// <param name="results">验证结果集合</param>
        public void AddResults(IEnumerable<ValidationResult> results)
        {
            if (results == null)
                return;
            foreach (var result in results)
                Add(result);
        }

        /// <summary>
        /// 获取迭代器
        /// </summary>
        IEnumerator<ValidationResult> IEnumerable<ValidationResult>.GetEnumerator()
        {
            return _results.GetEnumerator();
        }

        /// <summary>
        /// 获取迭代器
        /// </summary>
        IEnumerator IEnumerable.GetEnumerator()
        {
            return _results.GetEnumerator();
        }

        public IEnumerator GetEnumerator()
        {
            return _results.GetEnumerator();
        }
    }
}