Generate Random String using Asp.net c#

//Using For loop

public void Generate_Random_String()

    {

        char[] charSet =  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".ToCharArray();

        string Random_String = "";

        Random RandomNo = new Random();

        byte[] RandomBytes = new byte[32];

        RandomNo.NextBytes(RandomBytes);

       

        for (int i = 0; i < 32; i++)

            Random_String = Random_String + Convert.ToString(charSet[RandomBytes[i] % 62]);

     

    }

//Othere

    public void Generate_RandomString()

    {

        var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

        var random = new Random();

        var result = new string(Enumerable.Repeat(chars, 30) .Select(s => s[random.Next(s.Length)]).ToArray())+DateTime.Now.ToString("yyyyMMddhhmmss");

    }

//Result=jdu3tbdi8596mMHFROP20150412042010