Tuple<T1, T2, T3, T4, T5, T6, T7>.Equals Method (Object)

 
System_CAPS_noteNote

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Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5, T6, T7> object is equal to a specified object.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public override bool Equals(
	object obj
)

Parameters

obj
Type: System.Object

The object to compare with this instance.

Return Value

Type: System.Boolean

true if the current instance is equal to the specified object; otherwise, false.

The obj parameter is considered to be equal to the current instance under the following conditions:

  • It is a Tuple<T1, T2, T3, T4, T5, T6, T7> object.

  • Its seven components are of the same types as the current instance.

  • Its seven components are equal to those of the current instance. Equality is determined by the default object equality comparer for each component.

The following example defines an array of sextuples that contain population data for Los Angeles and New York from 1950 to 2000. The first component of each septuple identifies the city. The first, third, and fourth septuples contain data for New York. The first septuple is a duplicate of the fourth septuple. The third septuple identifies the city as "New York City" instead of "New York". As the example shows, only the fourth septuple is equal to the first septuple.

using System;

public class Example
{
   public static void Main()
   {
      // Get population data for New York City and Los Angeles, 1960-2000.
      Tuple<string, int, int, int, int, int, int>[] urbanPopulations =
           { Tuple.Create("New York", 7891957, 7781984, 7894862, 7071639, 7322564, 8008278),
             Tuple.Create("Los Angeles", 1970358, 2479015, 2816061, 2966850, 3485398, 3694820),
             Tuple.Create("New York City", 7891957, 7781984, 7894862, 7071639, 7322564, 8008278),
             Tuple.Create("New York", 7891957, 7781984, 7894862, 7071639, 7322564, 8008278) };
      // Compare each tuple with every other tuple for equality.
      for (int ctr = 0; ctr <= urbanPopulations.Length - 2; ctr++)
      {                      
         var urbanPopulation = urbanPopulations[ctr];
         Console.WriteLine(urbanPopulation.ToString() + " = ");
         for (int innerCtr = ctr +1; innerCtr <= urbanPopulations.Length - 1; innerCtr++)
            Console.WriteLine("   {0}: {1}", urbanPopulations[innerCtr], 
                              urbanPopulation.Equals(urbanPopulations[innerCtr]));
         Console.WriteLine();
      }   
   }
}
// The example displays the following output:
//    (New York, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278) =
//       (Los Angeles, 1970358, 2479015, 2816061, 2966850, 3485398, 3694820): False
//       (New York City, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278): False
//       (New York, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278): True
//    
//    (Los Angeles, 1970358, 2479015, 2816061, 2966850, 3485398, 3694820) =
//       (New York City, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278): False
//       (New York, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278): False
//    
//    (New York City, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278) =
//       (New York, 7891957, 7781984, 7894862, 7071639, 7322564, 8008278): False

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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