Convert a Numerical Type to a binary string and pad it properly.

NumberToBinary.cs

string NumberToBinary<T>(T val) where T : notnull, IConvertible
{
    try
    {
        long value = val.ToInt64(null);
        int size = System.Runtime.InteropServices.Marshal.SizeOf(default(T));
        return BitConverter.IsLittleEndian ? 
            Convert.ToString(value, 2).PadLeft(size * 8, '0') :
            Convert.ToString(value, 2).PadRight(size * 8, '0');
    }
    catch (InvalidCastException e)
    {
        // Handle exception however you want.
    }
}