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

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

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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