尝试一下:)

try this :)

Session["priceday1"] = "5464";
              // Session["priceday1"] = 5464;
           double finalPrice;
           if (Double.TryParse(Session["priceday1"].ToString(), out finalPrice))
           {
               finalPrice = finalPrice / 44;
               Label1.Text = finalPrice.ToString();
           }
           else
           {
               Label1.Text = "Invalid";
           }

这是因为ur将字符串除以44会导致您在字符串中转换会话.

this is Because ur dividing string by 44 as ur converting ur session in string.

Label2.Text = Session["priceday1"].ToString() / 44;

从上面的行中删除.ToString()，然后尝试像

Remove .ToString() from above line and try like

Label2.Text = (Convert.Toint32( Session["priceday1"] )/ 44).ToString();

试试这个

Try this

decimal priceday1 = (decimal) Session["priceday1"] / 44;
Label2.Text = priceday1.ToString("C");