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;

        }

    }

}