/// 將list集合轉換成datatable
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static System.Data.DataTable ListToDataTable(IList list)
        {
            System.Data.DataTable result = new System.Data.DataTable();
            
 
if (list.Count > 0)
            {
                PropertyInfo[] propertys = list[0].GetType().GetProperties();
                foreach (PropertyInfo pi in propertys)
                {
                    //獲取型別
                    Type colType = pi.PropertyType;
                    //當型別為Nullable<>時
 

                    if ((colType.IsGenericType) && (colType.GetGenericTypeDefinition() == typeof(Nullable<>)))
                    {
                        colType = colType.GetGenericArguments()[0];
                    }
                    result.Columns.Add(pi.Name, colType);
                }
                
 
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;
        }