program To Calculate The 1 month Before The expiry Date in c#.net

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I have a Table Which have 4 Columns.
Table Name- Personnel Details
Fields- Name, Position, Commence Date and Expiry Date.
What I want to make is before 1 month date for expiration which is based on Expiry Date there will be notice or pop up message "To be renew". I don't know how to calculate the date. Thanks..

Posted 18-Feb-14 4:31am

Member 10606256

Updated 12-Jun-22 6:45am

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Richard MacCutchan 18-Feb-14 10:36am

TimeSpan t = ExpiryDate - DateTime.Now;
if (t.days < 32)
    send the message ...

Member 12628849 20-Aug-16 3:48am

FFF

Member 12628849 20-Aug-16 7:47am

I want to make is before 1 month date for expiration which is based on Expiry Date there will be notice or pop up message "To be renew". I don't know how to calculate the date

2 solutions

Solution 2

This can be achieved by date difference.
See a very good article[^] is given there.

or rather,

C#

DateTime x1 = DateTime.ParseExact("20119", "yyyyM", CultureInfo.InvariantCulture);
DateTime x2 = DateTime.ParseExact("20135", "yyyyM", CultureInfo.InvariantCulture);

int months =  Math.Abs((x2.Month - x1.Month) + 12 * (x2.Year - x1.Year));

-KR

Posted 18-Feb-14 4:40am

Krunal Rohit

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Member 12628849 20-Aug-16 7:45am

i want to show notification for expiry date...this date from database in c#

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Pete O'Hanlon · Accepted Answer · 2014-02-18T04:38:00

As long as Expiry Date is a DateTime object, you should have relatively little trouble. Now, I'm assuming here that you are applying this at the client side, seeing that you haven't included SQL Server or other database in your tags, I'm not going to cover doing this as a query and I'm assuming that you have retrieved this data already. Suppose you mapped Expiry Date into a C# property called ExpiryDate, then all you need to do is:

C#

bool shouldRenew = ExpiryDate.AddMonths(-1) > DateTime.Now;