public string convertTemperature(string Celsius, string Fahrenheit, string convert)
 {
     try
     {
         decimal num = 0;
         decimal res = 0;
         _convert.Fahrenheit = 0;
         _convert.Celsius    = 0;
         if (decimal.TryParse(Celsius, out num))
         {
             _convert.Celsius = decimal.Parse(Celsius);
         }
         if (decimal.TryParse(Fahrenheit, out num))
         {
             _convert.Fahrenheit = num;
         }
         if (convert == "ctof")
         {
             res = _convert.CelsiusToFahrenheit();
         }
         else
         {
             res = _convert.FahrenheitToCelsius();
         }
         return(res.ToString());
     }
     catch (Exception ex)
     {
         return("Problem in conversion...");
     }
 }