DataTable和List集合互转

 /// <summary>
         /// 将集合转换成DataTable
         /// </summary>
         /// <param name="list">集合</param>
         /// <returns></returns>
         public static DataTable ToDataTable(IList list)
         {
             DataTable result = new DataTable();
             if (list.Count > )
             {
                 PropertyInfo[] propertys = list[].GetType().GetProperties();
                 foreach (PropertyInfo pi in propertys)
                 {
                     result.Columns.Add(pi.Name, pi.PropertyType);
                 }
                 for (int i = ; i < list.Count; i++)
                 {
                     ArrayList tempList = new ArrayList();
                     foreach (PropertyInfo pi in propertys)
                     {
                         object obj = pi.GetValue(list[i], null);
                         tempList.Add(obj);
                     }
                     object[] array = tempList.ToArray();
                     result.LoadDataRow(array, true);
                 }
             }
             return result;
         }

     /// <summary>
         /// 讲DataTable转换成集合
         /// </summary>
         /// <param name="dt">数据表</param>
         /// <returns></returns>
         public static IList<CarNum> ToList(DataTable dt)
         {
             // 定义集合
             IList<CarNum> ts = new List<CarNum>();

             // 获得此模型的类型
             Type type = typeof(CarNum);

             string tempName = "";

             foreach (DataRow dr in dt.Rows)
             {
                 CarNum t = new CarNum();

                 // 获得此模型的公共属性
                 PropertyInfo[] propertys = t.GetType().GetProperties();

                 foreach (PropertyInfo pi in propertys)
                 {
                     tempName = pi.Name;

                     // 检查DataTable是否包含此列
                     if (dt.Columns.Contains(tempName))
                     {
                         // 判断此属性是否有Setter
                         if (!pi.CanWrite) continue;

                         object value = dr[tempName];
                         if (value != DBNull.Value)
                             pi.SetValue(t, value, null);
                     }
                 }

                 ts.Add(t);
             }

             return ts;

         }