Time

Sorry sir I'm a newbie in c# language..

like this.
txtFrom.text = 8:00 AM
txtTo.text = 9:00 AM
if i click button
result is txtVacantFrom.text =  9:00 AM & txtVacantTo.text =  12:00 PM
thanks.

As vulpes said, please try to rephrase your question.

I mean the vacant time..
like if I have
start time = 8:00 AM
end time = 9:00 AM
and how can get the vacant time??
The possible result should be  9:00 AM to 12:00 PM.
thanks.. :(

I'm not 100% clear what the question is but try this:

using System;

class Program
{
   static void Main()
   {
      string start = "8:15 AM";
      string end = "9:30 AM";
      string final = "12:00 PM";
      DateTime startTime = DateTime.Parse(start);
      DateTime endTime = DateTime.Parse(end);
      DateTime finalTime = DateTime.Parse(final);
      TimeSpan totalTime = finalTime - startTime;
      TimeSpan usedTime = endTime - startTime;
      TimeSpan vacantTime = totalTime - usedTime;
      Console.WriteLine("Vacant time is {0} hours", vacantTime.TotalHours);
      Console.ReadKey();
   }
}

The output is:

Vacant time is 3 hours

it will help you....
http://www.codeproject.com/Articles/168662/Time-Period-Library-for-NET