C# List转DataTable

        /// <summary>
        /// 将List转换为DataTable
        /// </summary>
        /// <param name="list">请求数据</param>
        /// <returns></returns>
        public static DataTable ListToDataTable<T>(List<T> list)
        {
            //创建一个名为"tableName"的空表
            DataTable dt = new DataTable("tableName");

            //创建传入对象名称的列
            foreach (var item in list.FirstOrDefault().GetType().GetProperties())
            {
                dt.Columns.Add(item.Name);
            }
            //循环存储
            foreach (var item in list)
            {
                //新加行
                DataRow value = dt.NewRow();
                //根据DataTable中的值，进行对应的赋值
                foreach (DataColumn dtColumn in dt.Columns)
                {
                    int i = dt.Columns.IndexOf(dtColumn);
                    //基元元素，直接复制，对象类型等，进行序列化
                    if (value.GetType().IsPrimitive)
                    {
                        value[i] = item.GetType().GetProperty(dtColumn.ColumnName).GetValue(item);
                    }
                    else
                    {
                        value[i] = JsonConvert.SerializeObject(item.GetType().GetProperty(dtColumn.ColumnName).GetValue(item));
                    }
                }
                dt.Rows.Add(value);
            }
            return dt;
        }

        public static DataTable ListToDataTable<T>(List<T> list)
        {
            System.Data.DataTable result = new System.Data.DataTable();
            if (list.Count > 0)
            {
                PropertyInfo[] propertys = list[0].GetType().GetProperties();
                foreach (PropertyInfo pi in propertys)
                {
                    //获取类型
                    Type colType = pi.PropertyType;
                    //当类型为Nullable<>时
                    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;
        }