On Error catch block did not call

Question

In an Interview,Interviewer asked to me.. that I have a code which written in side the try and catch block like

try
 {
 //code line 1
 //code line 2
 //code line3 -- if  error occur on this line then did not go in the catch block
 //code line 4
 //code line 5
 }
 catch()
 {
  throw
 }

suppose we got an error on code line 3 then this will not go in the catch block but If I got error on any other line except line 3 it go in catch block

is this possible that if error occur on a particular line then it is not go in the catch block?

Answer 1

You could wrap line 3 in another try/catch block:

try
{
    //code line 1
    //code line 2
    try
    {
        //code line3 -- if  error occur on this line then did not go in the catch block
    }
    catch { }
    //code line 4
    //code line 5
}
catch()
{
    throw;
}

Also the interviewer must have defined error. Was talking about an exception as an error could mean many things => crappy code, exception, not behaving as expected code, ...

Answer 2

If you line 3 causes non CLS-compliant exceptions, it won't be catch'ed with parameterized catch() block. To catch all type of exceptions, use parameterless catch block.

try
{
// Statement which causes an exception
}

catch //No parameters
{
//Handles any type of exception
}

.net Exception catch block