C#

class Program    
{
    static void Main(string[] args)        
    {            
        bool isFirst = true;
        Primes myPrimes = new Primes(2,1000);            
        foreach (long i in myPrimes)
        {
            if (isFirst)
            {
                Console.Write(i.ToString()); 
                isFirst = false;
            }
            else
            {
                Console.Write(", {0}",i.ToString());
            }
        }
        if (!isFirst) Console.Write(".");
        Console.ReadKey();        
    }    
}

humayunlalzad wrote:

(i==myPrimes.max )?".":",");

humayunlalzad wrote:

start with GUI then commandLine and then GUI forever.

string s = "hello \r\n how are you? \r\n";
string[] sArr = s.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
StringCollection col = new StringCollection();
col.AddRange(sArr);