static void Main(string[] args)
{
int result = TestTool.GetInstance().Add(1, 2);
Console.WriteLine("OVER");
Console.ReadLine();
}
// 定义单例模式将PolicyInjection.Create<UserOperation>()产生的这个对象传出去，这样就避免了在调用处写这些东西
public static TestTool GetInstance()
{
if (oUserOpertion == null)
{
oUserOpertion = PolicyInjection.Create <TestTool>();
}
return(oUserOpertion);
}