List转DataTable

        public static DataTable ListToDT<T>(List<T> ls)
        {
            DataTable dt = new DataTable();
            Type tp = typeof(T);
            PropertyInfo[] pinfo = tp.GetProperties();

            foreach (PropertyInfo pi in pinfo)
            {
                dt.Columns.Add(pi.Name);
               
            }

            if (ls != null)
            {
                for (int i = 0; i < ls.Count; i++)
                {
                    IList TempList = new ArrayList();
                    foreach (System.Reflection.PropertyInfo pi in pinfo)
                    {
                        object oo = pi.GetValue(ls[i], null);
                        TempList.Add(oo);
                    }

                    object[] itm = new object[pinfo.Length];
                    //遍历ArrayList向object[]里放数据
                    for (int j = 0; j < TempList.Count; j++)
                    {
                        itm.SetValue(TempList[j], j);
                    }
                    //将object[]的内容放入DataTable
                    dt.LoadDataRow(itm, true);
                }

            }

            return dt;
        }