I want add hours or minutes to current time

Hello .. I want increase time to current time for example, I have the time of the problem and the expected time to complete them How can I add?

 (DateTime.Now.ToShortDateString()  +.......)

From stackoverflow

• You can use other variable

  DateTime otherDate = DateTime.Now.AddMinutes(25);
  DateTime tomorrow = DateTime.Now.AddHours(25);
  

  Stormenet : Didn't know they had days of 25 hours these days :p

• You can also add a TimeSpan to a DateTime, as in:

  date + TimeSpan.FromHours(8);
  

• You can use the operators '+' '-' '+=' and '-=' on a DateTime with a TimeSpan argument

  DateTime myDateTime = DateTime.Parse("24 May 2009 02:19:00");
  
  myDateTime = myDateTime + new TimeSpan(1, 1, 1);
  myDateTime = myDateTime - new TimeSpan(1, 1, 1);
  myDateTime += new TimeSpan(1, 1, 1);
  myDateTime -= new TimeSpan(1, 1, 1);
  

  Furthermore you can use a set of "Add" methods

  myDateTime = myDateTime.AddYears(1);                
  myDateTime = myDateTime.AddMonths(1);              
  myDateTime = myDateTime.AddDays(1);             
  myDateTime = myDateTime.AddHours(1);               
  myDateTime = myDateTime.AddMinutes(1);            
  myDateTime = myDateTime.AddSeconds(1);           
  myDateTime = myDateTime.AddMilliseconds(1);       
  myDateTime = myDateTime.AddTicks(1);
  

  For a nice overview of even more DateTime manipulations see http://www.blackwasp.co.uk/CSharpDateManipulation.aspx