Calculation of time difference in C #

         <summary>///has been overloaded. Calculates an interval of two dates, returning the absolute value of the date difference for the interval. </summary>///<param name= "DateTime1" > First date and Time </param>///<param name= "Dateti Me2 "> Second date and time </param>///<returns></returns> private string DateDiff (DateTime date
             Time1,datetime DateTime2) {string datediff=null;
                 try {TimeSpan ts1=new TimeSpan (datetime1.ticks);
                 TimeSpan ts2=new TimeSpan (datetime2.ticks); TimeSpan Ts=ts1. Subtract (TS2).
                 Duration (); Datediff=ts. Days.tostring () + "Days" +ts. Hours.tostring () + "Hour" +ts. Minutes.tostring () + "minutes" +ts.
             Seconds.tostring () + "seconds";
         Catch {} return dateDiff; ///<summary>///has been overloaded. Calculates the time interval between a time and the current local date and time, and returnsis the absolute value of the date difference for the time interval. </summary>///<param name= "DateTime1" > A date and time </param>///<returns></ret Urns> private String DateDiff (DateTime DateTime1) {return this.
         DateDiff (Datetime1,datetime.now); }

Note:

The 1.DateTime value type represents a specific date time from January 1, 01 0:0 0 seconds to A.D. December 31, 9999 23:59 59 seconds. Therefore, you can use the DateTime value type to describe any time within the imaginary range. A datetime value represents a specific moment.
The 2.TimeSpan value contains a number of properties and methods that are used to access or process a TimeSpan value
The following list covers a subset of these:
Add: Adds to another timespan value.
Days: Returns the value of the timespan that is calculated in the day.
Duration: Gets the absolute value of the timespan.
Hours: Returns the timespan value calculated in hours
Milliseconds: Returns the TimeSpan value computed in milliseconds.
Minutes: Returns the timespan value calculated in minutes.
Negate: Returns the opposite number of the current instance.
Seconds: Returns the timespan value calculated in seconds.
Subtract: Subtracts another timespan value from it.
Ticks: Returns the number of tick for the timespan value.
Totaldays: Returns the number of days that the TimeSpan value represents.
Totalhours: Returns the number of hours represented by the timespan value.
TotalMilliseconds: Returns the number of milliseconds represented by the timespan value.
Totalminutes: Returns the number of minutes represented by the timespan value.
TotalSeconds: Returns the number of seconds that the timespan value represents.

Label1. Text = "2004-1-1 15:36:05";
Label2. Text = "2004-3-1 20:16:35";

DateTime d1 =new datetime (2004,1,1,15,36,05);
DateTime d2 =new datetime (2004,3,1,20,16,35);

TimeSpan D3 = D2. Subtract (D1);

Label3. Text = "Difference:"
+d3. Days.tostring () + "Days"
+d3. Hours.tostring () + "Hour"
+d3. Minutes.tostring () + "minutes"
+d3. Seconds.tostring () + "seconds";

Source: http://www.cnblogs.com/IT-Bear/archive/2012/01/16/2323609.html