palleagermark: Increment dates by months in X++

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Источник: http://www.agermark.com/2015/05/incr...nths-in-x.html
==============

A question was asked in the forums, about how to increment dates by months like:
21/02/2015
21/03/2015
21/04/2015
etc.

nextMth and dateMthFwd was suggested, so I just wanted to list some options.

Consider these examples.

nextMth will be off by days after hitting uneven months:
static void TestNextMth(Args _args)
{
date d = nextMth(31\12\2015);
print d;

d = nextMth(d);
print d;

d = nextMth(d);
print d;

d = nextMth(d);
print d;

pause;
}

• 31/1/2016
• 29/2/2016
• 29/3/2016
• 29/4/2016

dateMthFwd works ok:
static void TestDateMthFwd(Args _args)
{
date d = mkDate(31, 12, 2015);

print dateMthFwd(d, 1);
print dateMthFwd(d, 2);
print dateMthFwd(d, 3);
print dateMthFwd(d, 4);
pause;
}

• 31/1/2016
• 29/2/2016
• 31/3/2016
• 30/4/2016

And System.DateTime.AddMonths works ok:
static void TestAddMonths(Args _args)
{
System.DateTime dateTime = new System.DateTime(2015, 12, 31);

print dateTime.AddMonths(1);
print dateTime.AddMonths(2);
print dateTime.AddMonths(3);
print dateTime.AddMonths(4);
pause;
}

• 31/1/2016
• 29/2/2016
• 31/3/2016
• 30/4/2016

Источник: http://www.agermark.com/2015/05/incr...nths-in-x.html