Solved

Send Email before certain days from today's date

Posted on 2010-11-11
6
863 Views
Last Modified: 2013-04-16
hi,

How can i send an email certain days from now in C# (Win Forms). Say today is January 1 2010. Now i fix an appointment with doctor on January 10 2010. But i wish that a reminder email (regarding appointment) needs to be sent 3 days before (i.e. January 7 2010). I am having an email code with me.

My requirements: Visual Studio 2005, C# (vb would also do), WinForms (Windows based applications)

Please help me how to achieve this?

Let me know if anything from me is needed.
0
Comment
Question by:meispisces
6 Comments
 
LVL 6

Assisted Solution

by:AliSyed
AliSyed earned 166 total points
ID: 34115181
DateTime EmailDate = DateTime.Appointmentdate.AddDays(-3);
You can put this emaildate in your db and send a reminder on that date

Ali Syed
0
 
LVL 32

Assisted Solution

by:ewangoya
ewangoya earned 166 total points
ID: 34117804

You need  a database to store the appointments and reminder days and status of the reminder.

ReminderDate,  Status, AppointmentDate

Calculate the the date for the reminder from the AppointmentDate as described by AliSyed

Your application should run a aquery to once or twice a day fetch all records that have the ReminderDate equal to current date and status of not sent. Iterate through this records sending the emails one at a time and set the status to sent if successful.
If using SQL Server, you can set up sql server to do this for you.

you can use a function in c# such as
public bool SendEmail(string EmailFrom, string EmailTo, string EmailSubject, string EmailMessage, string EmailHost)
{
  try
  {
    MailMessage Msg = new MailMessageEmailFrom, EmailTo, EmailSubject, EmailMessage);
    SmtpClient Client = new SmtpClientEmailHost);
    Client.UseDefaultCredentials = true;
    Client.Send(msg);

    return true;
  }
  catch (Exception ex)
  {
     return false
  }
}
0
 
LVL 13

Accepted Solution

by:
devlab2012 earned 168 total points
ID: 34133781
create a table with following structure:

---tblEVENTS
EventID
EventDesc
EventDate
AlertBeforeDays
IsEmailed

Now, get the data from this table using a query like:

SELECT * FROM tblEvents WHERE dateAdd(d, AlertBeforeDays, getDate()) >= EventDate AND IsEmailed = 0
This query will give you information of events for which you have to send an email.

Now send an email (you mentioned that you already have code to send email) and when the email is sent successfully, set the value of IsEmailed to 1.

Okay, now the problem is how this application will automatically send the alerts? You can simplay depend upon "Task Scheduler" in Windows. Create a task to execute every day or after every few hours. For XP, click Start -> Control Panel -> Scheduled Task.

If you want to write your own code, you can use System.Threading.Timer class or Timer control.
0
 
LVL 7

Author Comment

by:meispisces
ID: 34298738
Yes please close it..
0
 
LVL 29

Expert Comment

by:Kumaraswamy R
ID: 34324605
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Suggested Solutions

This story has been written with permission from the scammed victim, a valued client of mine ā€“ identity protected by request.
Check out this infographic on what you need to make a good email signature that will work perfectly for your organization.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet sā€¦
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: ā€¦

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now