i need to send message to user in time diff

hi there ,
i am connectiong to sms web service
i have appointments and i need to remind  the coustomer abhot his appointments 1 hour befor the
appointments time.

i have 3 parameters :
the Appo time
the Appo time -1 hour
and the time itself

if the appo time is : 12:00
i need to send the reminde message in 11:00
how can i do it ?

thanks ...
Tech_MenAsked:
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monarch_ilhanCommented:
Send Reminder message to user if it returns true

private bool SendReminder(DateTime dtAppointmentTime)
{
  if(DateTime.Now.AddHours(1)==dtAppointmentTime)
   return true;
 else
 return false;

}
0
Tech_MenAuthor Commented:
i need to a loop that work all the time
i want to turn the loop every 10 min
and all the app in the range need to get the remind

for exsample :
if there is a cust that has an appo in 12:00
he need to get remind in 11
if the loop start in 11:10 i need to get all the app in the range of 12 -1 houre
0
monarch_ilhanCommented:
Loop is not what you need. You should use timer object. If you set the interval of timer to 60000 which means every minute, you wont miss any reminder.
Add a timer to your form, set it interval to 60000 (Every minute). Add this code the the Tick event of  timer
//Get all appointments from DB
//I assume your query returns a datatable that contains a column name AppointmentTime

           DataTable dt=GetAllAppointments();

            foreach (DataRow drow in dt.Rows)
            {
                DateTime dtAppointmentTime = (DateTime)drow["AppointmentTime"];
                if (DateTime.Now.AddHours(1) == dtAppointmentTime)
                {
                    //Send reminder
                }

            }


Actually you didnt supply enough information. If you have any code, send it to here and clarify what should be done
0

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