C# TimeZoneInfo HasSameRules

Description

TimeZoneInfo HasSameRules indicates whether the current object and another TimeZoneInfo object have the same adjustment rules.

Syntax

TimeZoneInfo.HasSameRules has the following syntax.


public bool HasSameRules(
  TimeZoneInfo other
)

Parameters

TimeZoneInfo.HasSameRules has the following parameters.

other - A second object to compare with the current TimeZoneInfo object.

Returns

TimeZoneInfo.HasSameRules method returns true if the two time zones have identical adjustment rules and an identical base offset; otherwise, false.

Example


using System.Collections.ObjectModel;
using System;//  ww w  .  ja v a 2 s .  com
public class MainClass{
  public static void Main(String[] argv){  
    ReadOnlyCollection<TimeZoneInfo> timeZones = TimeZoneInfo.GetSystemTimeZones();
    TimeZoneInfo[] timeZoneArray = new TimeZoneInfo[timeZones.Count];
    timeZones.CopyTo(timeZoneArray, 0);
    // Iterate array from top to bottom 
    for (int ctr = timeZoneArray.GetUpperBound(0); ctr >= 1; ctr--)
    {
       // Get next item from top
       TimeZoneInfo thisTimeZone = timeZoneArray[ctr];
       for (int compareCtr = 0; compareCtr <= ctr - 1; compareCtr++)
       {
          // Determine if time zones have the same rules 
          if (thisTimeZone.HasSameRules(timeZoneArray[compareCtr]))
          {
             Console.WriteLine("{0} has the same rules as {1}", 
                               thisTimeZone.StandardName,
                               timeZoneArray[compareCtr].StandardName);
          }
       }
    }
  }
}

The code above generates the following result.