C# - 如何将 (Exception ex) 设为公开

Question

How can I make ex accessible after a try catch block? Like this...

try
{
    // do something...
}
catch (Exception ex) {
    // skip here...
}
//execute **ex** here

Why do I want to do this? If I write:

try
{
    // do something...
    // i already declared x as public.
    x = "what ever";
}
catch (Exception ex) {
    // if there's an error...
    Console.WriteLine(ex);
}
// Even there's an error,
// there's still no output.

So maybe if ex is public, I can try this:

try
{
    // do something...
}
catch (Exception ex) {
    // skip here...
}
// execute **ex** here

Answer 1

I am not sure what you mean with "execute ex", but this is how you could access the Exception after the catch block:

Exception ex = null;
try
{
    // do something...
}
catch (Exception ex1) {
    ex = ex1;
}

if(ex != null)
   // ...

Answer 2

Exception exceptionObject = null;

try
{
    // do something...
}
catch (Exception ex) {
    exceptionObject = ex;
}
// execute **ex** here
if(exceptionObject != null)
{
    //do a thing
}

The thing you are doing is weird. Stop it.