try...catch:捕获异常try...finally:清除异常try..catch...finily:处理所有异常 1.捕获异常 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace 异常处理 { //try...catch捕获异常 //try...finally清除异常 //try..catc…