键值集合List转换成datatable

/// <summary>
        /// 键值集合List转换成datatable
        /// </summary>
        /// <param name="data">数据源</param>
        /// <returns></returns>
        DataTable ToDataTable(List<Dictionary<string, string>> data)
        {

            DataTable dt = new DataTable();

            foreach (var item in data[].Keys)
            {//循环添加列
                dt.Columns.Add(new DataColumn(item));
            }
            foreach (var item in data)
            {//把数据填充到行
                DataRow dr = dt.NewRow();
                foreach (var ii in item)
                {
                    dr[ii.Key] = ii.Value;
                }
                //把数据添加到datatable
                dt.Rows.Add(dr);
            }

            return dt;
        }

         //调用
        List<Dictionary<string, string>> data = new List<Dictionary<string, string>>();
         ToDataTable(data)