Int32.GetHashCode Method in C# with Examples

Int32.GetHashCode method is used to get the HashCode for the current Int32 instance.

Syntax: public override int GetHashCode ();

Return Value: This method returns a 32-bit signed integer hash code.

Below programs illustrate the use of the above discussed-method:

Example 1:

// C# program to illustrate the
// Int32.GetHashCode() Method
using System;

class GFG {

    // Main Method
    public static void Main()
    {

        // Taking Int32 variable
        int val = 32523;

        // Getting the hash code for Int32
        // using GetHashCode() method
        int result = val.GetHashCode();

        // Display the hashcode
        Console.WriteLine("HashCode for Int32 is: {0}",
                                               result);
    }
}

Output:

HashCode for Int32 is: 32523

Example 2:

// C# program to illustrate the
// Int32.GetHashCode() Method
using System;

class GFG {

    // Main Method
    public static void Main()
    {
        // using result() Method
        result(Int32.MinValue);
        result(Int32.MaxValue);
    }

    // result() method
    public static void result(int val)
    {

        // using GetHashCode() method
        int code = val.GetHashCode();

        // Display the hashcode
        Console.WriteLine("HashCode for {0} is {1}",
                                         val, code);
    }
}

Output:

HashCode for -2147483648 is -2147483648
HashCode for 2147483647 is 2147483647

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.int32.gethashcode?view=netframework-4.7.2