Generating random numbers without repeating.C#

Question

Hi everyone I am trying to generate 6 different numbers on the same line in c# but the problem that i face is some of the numbers are repeating on the same line.Here is my c

Answer 1

Paste the below in the class as a new method

    public int randomNumber()
    {
        var random = new Random();
        int randomNumber = random.Next(10000, 99999);
        return randomNumber;
    }

And use the below anywhere in the tests wherever required

var RandNum = randomNumber();

driver.FindElement(By.CssSelector("[class='test']")).SendKeys(**RandNum**);