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

Instead of using a List, you should use an HashSet. The HashSet<> prohibites multiple identical values. And the Add method returns a bool that indicates if the element was added to the list, Please find the example code below.

public static IEnumerable GetRandomNumbers(int count)
{
HashSet randomNumbers = new HashSet();

for (int i = 0; i < count; i++) 
    while (!randomNumbers.Add(random.Next()));

return randomNumbers;
}