类似于Java大整数类的CSharp版大整数类-BigInteger class for CSharp

一个自己写的 C# BigInteger 类，.net 类库中没有 BigInteger 类，写此类是为了与 java 中的 BigInteger 对应，以方便大数运算-One wrote it myself C# BigInteger Class,. Net library does not BigInteger class, write these in order to correspond with the java in the BigInteger to facilitate the

vs2008内部提取出来并进行修改的BIgInteger类-vs2008 extracted and modified within the BIgInteger class

一个实现了大数及其加、减、乘、除等各种操作的类-An implementation of the large number of addition, subtraction, multiplication, division and other operations of the class