I want to generate a list of N different random numbers.

I'm doing this in a following way:

public static List<int> GetRandomNumbers(int count)
{
    List<int> randomNumbers = new List<int>(); 
    
    for (int i=0; i<count; i++) 
    {    
        int number;
        
        do number = random.Next();
        while (randomNumbers.Contains(number));
        
        randomNumbers.Add(number);
    }
        
    return randomNumbers;
}

But I feel there is a better way. Especially this do...while loop makes this ugly. Any suggestions how to improve this?

I want to generate a list of N different random numbers:

public static List<int> GetRandomNumbers(int count)
{
    List<int> randomNumbers = new List<int>(); 
    
    for (int i=0; i<count; i++) 
    {    
        int number;
        
        do number = random.Next();
        while (randomNumbers.Contains(number));
        
        randomNumbers.Add(number);
    }
        
    return randomNumbers;
}

But I feel there is a better way. This do...while loop especially makes this ugly. Any suggestions on how to improve this?