If exception will occur in try block then exception or
error is cached by catch block. If final block is with try catch then after
exception final block will execute.
In some scenario, if exception occurs in catch block,
then code will abort in catch block because no catch block is there for catching
an error or exception. So we check our code and will use nested try catch in application.
Example:-
static void Main(string[] args)
{
try
{
int a = 10;
int b = 0;
int c = a / b;
Console.WriteLine("divide
by zero");
}
catch(Exception
ex) // exception will catch here
{
string path=@"D:\Test\";
File.Copy(path + "xml.xml",
path + "xml.xml"); // trying to copy a file but here path does not exist so again exception
throw and then code will abort
Console.WriteLine("");
}
finally
{
Console.WriteLine("Final");
}
}
In the above example, exception will occur in try block
and it will catch by catch block. But again exception will occur in catch block
because path does not exist. So after that code will abort here means execution
will stop here. So final block will not execute.
So according to you
requirement or you know that exception will again occur in catch block then you
use nested try-catch block.
