利用反射把Datatable转换成List

       /// 利用反射将Datatable转换为List<T>对象

       /// </summary>

       /// <typeparam name="T">集合</typeparam>

       /// <param name="dt"> datatable对象</param>

       /// <returns></returns>

       public List<T> DataTableToList<T>(DataTable dt) where T : new()

       {

           //定义集合

           List<T> ts = new List<T>();

           //定义一个临时变量

           string tempName = string.Empty;

           //遍历dataTable中的数据行

           foreach (DataRow dr in dt.Rows)

           {

               T t = new T();

               //获得此模型的公共属性

               PropertyInfo[] propertys = t.GetType().GetProperties();

               //遍历该对象的所有属性

               foreach (PropertyInfo pi in propertys)

               {

                   tempName = pi.Name;//将属性名称赋值给临时变量

                   //检查datatable是否包含此列(列名==对象的属性名)

                   if (dt.Columns.Contains(tempName))

                   {

                       //取值

                       object value = dr[tempName];

                       //如果非空，则赋给对象的属性

                       if (value != DBNull.Value)

                       {

                           //这里添加判断的原因:比如double转folat不能隐式转换,而枚举类型又不能使用Convert.ChangeType

                           if (pi.PropertyType.IsEnum)

                               {

                                   pi.SetValue(t, value, null);

                                }

                               else

                               {

                               //ChangeType属于强转可能存在数据丢失,但是pi.PropertyType是对应你类成员的类型

                               pi.SetValue(t, Convert.ChangeType(value, pi.PropertyType), null);

                                }

                           }

                   }

               }

               //对象添加到泛型集合中

               ts.Add(t);

           }

           return ts;

       }