Generate random values in C#

all sorts of random values including date, times, numbers, binary, bit, etc.

generate random values

public int Integer(int max = Int16.MaxValue)
{
    max = max > Int16.MaxValue ? Int16.MaxValue : max;
    return new Random().Next(-max, max);
}

public string Binary(int length = 8)
{            
    int decNum = new Random().Next(1000, int.MaxValue);
    return Convert.ToString(decNum, 2)
        .Substring(0, length);
}

public DateTime Date(int start_year = 1995)
{
    DateTime start = new DateTime(start_year, 1, 1);
    int range = ((TimeSpan)(DateTime.Today - start))
        .Days;
    start.AddDays(new Random().Next(range))
        .AddSeconds(new Random().Next(86400));
}

public TimeSpan Time()
{
    return Date().TimeOfDay;
}

public int Bit()
{
    return new Random().Next() % 2 == 0 ? 1 : 0;
}

public bool Bool()
{
    return new Random().Next() % 2 == 0 ? true : false;
}

public string String(int limit = 255)
{
    // added spaces so there will be 
    // a higher chance of spacing words
    string legal = "        abcdefghijklmnopqrstuvwxyz" +
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789      ";
    StringBuilder s = new StringBuilder();
    //Random length for the string
    limit = new Random().Next(1, limit); 
    for (int i = 0; i < limit; i++)
        s.Append(legal[new Random().Next(legal.Length)]);
    return s.ToString();
}