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 > 0)
            {
                PropertyInfo[] propertys = list[0].GetType().GetProperties();
                foreach (PropertyInfo pi in propertys)
                {
                    result.Columns.Add(pi.Name, pi.PropertyType);
                }
                for (int i = 0; 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;
 
        }