Question

Which one is better to use?

if (condition)
{
    flagCheck = true;

    //Service layer call - code.

    flagCheck = false;
}

OR

if (condition)
{
    flagCheck = true;

    try
    {
       //Service layer call - code.
    }
    finally
    {
        flagCheck = false;
    }
}

What is the difference between the two methods? Are there situations where one can be used preferably more than other?

Answer 1

In the first case, flagCheck remains true if // Service layer call - code throws an exception, while in the second case flagCheck will be set to false after // Service layer call - code regardless of whether an exception is thrown or not.

Neither of the two cases is inherently better than the other; pick the one that does what you need.