How can I check if today's date is 5 days from ending date?

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I have a table that includes 3 dates. The registered date, the ending date and the actual date.
What I want is to simply show me a textbox that could remind me that the end date is happening in 5 days and on the end date. For example:

I have a "end date" set to 4-5-17 and the "actual date" is 29-4-17. What it should do is that it would show me a warning when the date is -5 days from ending, and then when the end date is equal to today's date it will show me a form that i've set to edit the date.

What I have tried:

Tried to convert date to string and subtract -5 to the end date and messagebox me when the date is reaching.

string actualdate;
string enddate;
enddate = dr.Cells["Até"].Value.ToString();
actualdate = DateTime.Now.ToString();
if (actualdate > enddate)
{
    MesageBox.Show("The end date of "dr.Cells["Name"].Value" subscription is ending!","Warning");
}

Posted 15-Mar-17 2:18am

Scribling Doodle

Updated 15-Mar-17 3:16am

v2

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Prateek Dalbehera 15-Mar-17 8:26am

Can you elaborate more what you want to achieve. BTW you can use TimeSpan for time calculation and write your logic in it.

Scribling Doodle 15-Mar-17 8:30am

I have 2 separate dates, the today's date and the end date of that subscription. What I want is simply remind me 5 days before the end date is equal to the today's date. It's kinda confusing yeah, but I hope you understand!

Prateek Dalbehera 15-Mar-17 8:34am

ok, how frequently is your application running? I mean to ask that how frequently the DateComparison method will be called?? Do you want something like if (Endday - Today <= 5) then show alert??

Scribling Doodle 15-Mar-17 8:37am

Daily Basis, It's a subscription program for a Gym. Which needs constant updates on the end dates, so the worker can warn the people.

Prateek Dalbehera 15-Mar-17 8:40am

Is the solution provided below not helping you?? It will return bool value according to date range. Or do you require something else?

Scribling Doodle 15-Mar-17 8:38am

And Yes, it's something like that but the end date comes from the datagrid, if so i would do a string for the endday and set it up as the datagrid column?

Prateek Dalbehera 15-Mar-17 8:47am

You can convert the date in string format coming from datagrid, then do timespan or solution provided below to calculate. Not a big deal i guess. For complete solution, please share some of your code snippets

Scribling Doodle 15-Mar-17 8:49am

I'll work it out in a few minutes ;) Thanks in advance!!

Scribling Doodle 15-Mar-17 9:23am

I already put a code snippet for you to see what i came up with.

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OriginalGriff · Answer 1 · 2017-03-15T02:25:00

Solution 1

Quote:
Tried to convert date to string and subtract -5 to the end date and messagebox me when the date is reaching.

Don't do that! Instead, keep it as a DateTime value:

private bool IsWithinDays(DateTime date, int numberOfDays)
    {
    return DateTime.Now.Date.AddDays(numberOfDays) >= date;
    }

Posted 15-Mar-17 2:25am

OriginalGriff

Updated 15-Mar-17 2:27am

v2