Question

Is there any difference between these tow pieces of code & which approach is better.

try
{
    using()
    { 
      //Do stuff
    }
}
catch
{
    //Handle exception
}


using()
{
    try
    {
         //Do stuff
    }
    catch
    {
        //Handle exception
    }
}

Answer 1

There are differences, but it namely boils down to the fact that a using block creates it own try and scope blocks.

try
{
    using(IDisposable A = GetDisposable())
    { 
      //Do stuff
    }
}
catch
{
    //Handle exception
    // You do NOT have access to A
}


using(IDisposable A = GetDisposable())  //exception here is uncaught
{
    try
    {
         //Do stuff
    }
    catch
    {
        //Handle exception
        // You DO have access to A
    }
}