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, the event generated a lot over a short time[……]