在c#中使用switch case的asp.net。小时格式

I created this asp.net program using switch case statement to determine the current datetime.now.hour in C#. When I compile it nothing happens, not even error comments. I believe that I close to getting it to work, but I need to be pointed in the right direction. I'd appreciate any helpful suggestions. I believe my problem is not knowing exactly how to correctly convert the variable to the right data type. I'm really new to asp.net and I'm learning c# as I practice. I've got some experience in C++. Here is my code.I created this asp.net program using switch cas