try-catch-finaly

class Program
{
static string result1 = null;
static void Main(string[] args)
{
string result= printresult();
Console.WriteLine("result Say :\nMy Value Is " + result);
Console.WriteLine("result1 Say :\nMy Value Is" + result1);
Console.ReadKey();
}
static string printresult()
{
string s = "haha";
int a = 0;
try
{
a = Convert.ToInt32(s);//异常出现
result1 = "i am trying...";
return "我try完了，回去";
}
catch (Exception e)
{
result1 = "i am catch...";
return "我catch完了，回去";
}
finally
{
result1="我finally完了，回去";//这里的语句不管try-catch结果如何，都会执行。但允许写return语句
}
result1="完了，i have to go";//提示无法访问的代码,因为try和catch都有返回值，这句话没机会执行了
return result1;
}//返回值是："我catch完了，回去";
}

 

结论：finally语句无论try-catch结果如何都会执行，执行完才会执行try-catch中的return语句（如果有的话）