During the development time，You will inevitably use a random number。And still more when，We need to generate a series of random numbers numeric string spare。Fortunately, however, a variety of programming language provides a simple and easy to use pseudo-random number generator for your use，For example, in the C # Random。
but，C # is the default system clock Random seed - this method is simple and crude，Unfortunately, once the case a short time generate a lot of random encounters on the stretched - a bunch of the same random number to jump out，But precisely because the random，It will have the same number appears，but[……]
