private void readExcel(string url)
        {
            if (string.IsNullOrEmpty(url))
            {
                return;
            }
            if (excelDict == null)
            {
                excelDict = new Dictionary <string, ExcelStateObj>();
            }
            excelDict.Clear();
            excelName = System.IO.Path.GetFileNameWithoutExtension(url);
            List <ExcelStateObj> excelList = ExcelFunction.ReadExcel(url);

            for (int i = 0; i < excelList.Count; i++)
            {
                excelDict[excelList[i].ExcelName] = excelList[i];
            }
            List <string> list = new List <string>(excelDict.Keys);

            tables       = list.ToArray();
            currentTable = 0;

            //Debug.Log(excelDict.Count+"--"+tables.Length);
        }