将List转换成DataTable

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Reflection;
using YTO.WeiXin.Model;
using System.Collections;


namespace WeiXin.Core
{
    public class ListToDataTable
    {
        public static DataTable ToDataTable<T>(IList<T> list)
        {
            return ToDataTable(list, null);
        }

        //将list转换成DataTable
        public static DataTable ToDataTable<T>(IList<T> list, params string[] propertyName)
        {
            List<string> propertyNameList = new List<string>();
            if (propertyName != null)
            {
                propertyNameList.AddRange(propertyName);
            }
            DataTable result = new DataTable();
            if (list.Count > 0)
            {
                PropertyInfo[] propertys = list[0].GetType().GetProperties();
                foreach (PropertyInfo pi in propertys)
                {
                    if (propertyNameList.Count == 0)
                    {
                        result.Columns.Add(pi.Name, pi.PropertyType);
                    }
                    else
                    {
                        if (propertyNameList.Contains(pi.Name))
                        {
                            result.Columns.Add(pi.Name, pi.PropertyType);
                        }
                    }
                }
                for (int i = 0; i < list.Count; i++)
                {
                    ArrayList tempList = new ArrayList();
                    foreach (PropertyInfo pi in propertys)
                    {
                        if (propertyNameList.Count == 0)
                        {
                            object obj = pi.GetValue(list[i], null);
                            tempList.Add(obj);
                        }
                        else
                        {
                            if (propertyNameList.Contains(pi.Name))
                            {
                                object obj = pi.GetValue(list[i], null);
                                tempList.Add(obj);
                            }
                        }
                    }
                    object[] array = tempList.ToArray();
                    result.LoadDataRow(array, true);
                }
            }
            return result;
        }

        //AuthorizationInfo 将DataTable转换成list
        public static IList<AuthorizationInfo> ToList(DataTable dt, IList<AuthorizationInfo> list1)
        {
            //IList<AuthorizationInfo> list1 = new List<AuthorizationInfo>();
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                AuthorizationInfo authInfo = new AuthorizationInfo();
                authInfo.Id = (dt.Rows[i].ItemArray[0]).ToString();
                authInfo.LiencePlateNumber = (dt.Rows[i].ItemArray[1]).ToString();
                authInfo.Bar_code = (dt.Rows[i].ItemArray[2]).ToString();
                authInfo.PhoneNumber = (dt.Rows[i].ItemArray[3]).ToString();
                authInfo.OpenId = (dt.Rows[i].ItemArray[4]).ToString();
                authInfo.CreateTime = Convert.ToDateTime(dt.Rows[i].ItemArray[5]);
                authInfo.Status = (dt.Rows[i].ItemArray[6]).ToString();
                list1.Add(authInfo);
            }
            return list1;
        }

        //将ExcptionInfo DataTable转换成list
        public static IList<ExcptionInfo> ToList(DataTable dt, IList<ExcptionInfo> list1)
        {
            //IList<ExcptionInfo> list1 = new List<ExcptionInfo>();
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                ExcptionInfo exInfo = new ExcptionInfo();
                exInfo.Id = (dt.Rows[i].ItemArray[0]).ToString();
                exInfo.LiencePlateNumber = (dt.Rows[i].ItemArray[1]).ToString();
                exInfo.CarLine = (dt.Rows[i].ItemArray[2]).ToString();
                exInfo.PhoneNumber = (dt.Rows[i].ItemArray[3]).ToString();
                exInfo.OpenId = (dt.Rows[i].ItemArray[4]).ToString();
                exInfo.CreateTime = Convert.ToDateTime(dt.Rows[i].ItemArray[5]);
                exInfo.Remark = (dt.Rows[i].ItemArray[8]).ToString();
                exInfo.ExcptionCategory = (dt.Rows[i].ItemArray[6]).ToString();
                exInfo.Position = (dt.Rows[i].ItemArray[7]).ToString();
                list1.Add(exInfo);
            }
            return list1;
        }
    }
}