C# 利用反射把DataTable转为List

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Reflection;
using System.ComponentModel;

namespace SM.RoadConditionFileManagment.Helper
{
    public class ModelConvertHelper
    {
        /// <summary>
        /// DataTable转为List
        /// </summary>
        /// <typeparam name="T">类型</typeparam>
        /// <param name="dt">DataTable</param>
        /// <returns>List</returns>
        public static List<T> TableToList<T>(DataTable dt) where T : new()
        {
            List<T> list = new List<T>();
            Type type = typeof(T);
            foreach (DataRow row in dt.Rows)
            {
                T t = new T();
                // 获得此模型的公共属性      
                PropertyInfo[] propertys = t.GetType().GetProperties();
                foreach (PropertyInfo pi in propertys)
                {
                    // 检查DataTable是否包含此列  
                    if (dt.Columns.Contains(pi.Name))
                    {
                        // 判断此属性是否有Setter      
                        if (!pi.CanWrite)
                            continue;
                        object value = row[pi.Name];
                        if (value != DBNull.Value)
                        {
                            //获取此字段的类型
                            Type typePi = pi.PropertyType;
                            TypeCode typeCodePi = new TypeCode();
                            //判断此字段是否为nullable泛型类
                            //如果是就利用NullableConverter类获取其基本类型
                            //如果不是就直接获取其基本类型
                            if (typePi.IsGenericType && typePi.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
                            {
                                NullableConverter nullableConverter = new NullableConverter(typePi);
                                Type type1 = nullableConverter.UnderlyingType;
                                typeCodePi = Type.GetTypeCode(type1);
                            }
                            else 
                            {
                                typeCodePi = Type.GetTypeCode(typePi);
                            }
                            //转换数据类型
                            switch (typeCodePi)
                            {
                                case TypeCode.DateTime:
                                    pi.SetValue(t, Convert.ToDateTime(value), null);
                                    break;
                                case TypeCode.Double:
                                    pi.SetValue(t, Convert.ToDouble(value), null);
                                    break;
                                case TypeCode.Empty:
                                    pi.SetValue(t, "", null);
                                    break;
                                case TypeCode.Int32:
                                    pi.SetValue(t, Convert.ToInt32(value), null);
                                    break;
                                case TypeCode.Object:
                                    pi.SetValue(t, value, null);
                                    break;
                                case TypeCode.String:
                                    pi.SetValue(t, Convert.ToString(value), null);
                                    break;
                                default:
                                    break;
                            }
                        }
                    }
                }
                list.Add(t);
            }
            return list;
        }
    }
}