一位2岁的男孩最近因声音嘶哑等问题，在家人陪同下到医院检查，经过检查，医生发现孩子的咽喉部位有不平整的肿块，和菜花极为相似，已经占据咽喉的绝大部分空间。在医生的建议下，小男孩接受等离子消融手术，这一个咽
I have a sample program, which needs to execute 3 methods in a particular order. And after executing each method, should do error handling. Now i did this in a normal fashion, w/o using delegates like
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