static void Main(string[] args)
{
// 解决方案1.AutomatePowerPoint 演示了自动化的Microsoft PowerPoint
// 应用程序通过使用Microsoft PowerPoint主互操作程序集（PIA），和显
// 式地将每一个COM存取器赋予一个新的变量（这些变量需要在程序结束时
// 显式的调用Marshal.FinalReleaseComObject方法来释放它）。
Solution1.AutomatePowerPoint();
Console.WriteLine();
// 解决方案2.AutomatePowerPoint 演示了自动化Microsoft PowerPoint应
// 用程序通过使用Microsoft PowerPoint PIA，并在自动化功能函数弹出栈
// 后（在此时的RCW对象都是不可达的）就开始强制一次垃圾回收来清理RCW
// 对象和释放COM对象。
Solution2.AutomatePowerPoint();
}
static void Main(string[] args)
{
// Solution1.AutomatePowerPoint demonstrates automating Microsoft
// PowerPoint application by using Microsoft PowerPoint PIA and
// explicitly assigning each COM accessor object to a new
// varaible that you would explicitly call
// Marshal.FinalReleaseComObject to release it at the end.
Solution1.AutomatePowerPoint();
Console.WriteLine();
// Solution2.AutomatePowerPoint demonstrates automating Microsoft
// PowerPoint application by using Microsoft PowerPoint PIA and
// forcing a garbage collection as soon as the automation function
// is off the stack (at which point the RCW objects are no longer
// rooted) to clean up RCWs and release COM objects.
Solution2.AutomatePowerPoint();
}