科学记数法转换有关问题

科学记数法转换问题
csv文件里有个16位数字1203120200000001 但是我读出来的确实用科学记数法表示的，怎么能转换成普通的数字？谢谢

C# code

            string fileName = FileUpload1.FileName;            string fPath = Server.MapPath("\\") + "CardFile\\";//上传到服务器的文件夹路径            if (Directory.Exists(fPath) == false)            {                Directory.CreateDirectory(fPath);            }            string filePath = fPath + fileName;//绝对路径            FileUpload1.SaveAs(filePath);//上传至服务器            string strConn = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties='text;HDR=Yes;FMT=Delimited';Data Source=" + fPath);            OleDbConnection conn = new OleDbConnection(strConn);            DataTable dt = new DataTable();            string sqlStr = "select * from " + fileName;            try            {                if (conn.State == ConnectionState.Closed)                    conn.Open();                OleDbDataAdapter dr = new OleDbDataAdapter(sqlStr, conn);                DataSet ds = new DataSet();                dr.Fill(ds, "mytable");                dt = ds.Tables["mytable"];            }            catch            { }            finally            {                conn.Close();            }            return dt;

C# code

 var number = "1.203E16"; decimal decstr = decimal.Parse(number.ToString(), System.Globalization.NumberStyles.Any);
[解决办法]
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C# code

var number = "1.203E16";
decimal decstr = decimal.Parse(number.ToString(), System.Globalization.NumberStyles.Any)……