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How to Generate Random Integers in C# Using the Random Class?

Susan Sarandon
Release: 2025-02-01 07:36:14
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How to Generate Random Integers in C# Using the Random Class?

Generating Pseudo-Random Integers in C#

The C# Random class is your go-to tool for creating pseudo-random integers. Let's explore how to effectively utilize it.

Using the Random Class:

  1. Instantiate the Random object:

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Random random = new Random();

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  1. Generate a random integer within a specified range: Use the Next() method:

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int randomNumber = random.Next(minimum, maximum);

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Here:

  • minimum represents the inclusive lower bound.
  • maximum represents the exclusive upper bound.

Illustrative Example:

To generate a random integer between 1 and 10 (inclusive):

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int randomNumber = random.Next(1, 11); // Note: 11 is the exclusive upper bound

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Key Considerations:

  • Reuse your Random object: For optimal results and to avoid generating duplicate sequences, it's best practice to reuse a single Random instance for multiple random number generations. Repeatedly creating new instances can lead to predictable sequences due to the reliance on the system clock for seeding.

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