C# How would I check if a date that is currently a string is today?

Question

Hi,

I have a date that is in a format called 'String(Generalized-Time)', see MSDN below, I need to check if this date is today and if it is do X.

http://msdn.microsoft.com/en-us/library/ms684436%28VS.85%29.aspx

To complicate this slightly I have a int that is in this example 4, if the int is 4 then I want to check if the date that is in the 'String(Generalized-Time)' format is in the last 4 days, the int maybe 7, 24, 30 etc.

How would I write this? I'm a novice and very grateful of the help.

Thanks

Answer 1

Like this:

   DateTime dt;
   if (DateTime.TryParse(stringValue, out dt) && 
       dt.Date == DateTime.Today)
   {
       // do some stuff
   }

To check if it's anytime within the last four days,

   DateTime dt;
   if (DateTime.TryParse(stringValue, out dt) && 
       dt.Date > DateTime.Today.AddDays(-4f) &&
       dt < DateTime.Now)
   {
       // do some stuff
   }

Answer 2

if(DateTime.Parse(yourString).Date == DateTime.Now.Date )
{
  //do something
}

Should see if the day is today. However this is missing error checking (it assumes yourString is a valid datetime string).

To do the more complicated check you could do:

DateTime date = DateTime.Parse(yourString);
int dateOffset = 4;

if(date.Date >= DateTime.Now.AddDays(-dateOffset).Date)
{
//this date is within the range!
}