Why aren't variables declared in “try” in scope in “catch” or “finally”?

Question

In C# and in Java (and possibly other languages as well), variables declared in a \"try\" block are not in scope in the corresponding \"catch\" or \"finally\" blocks. For e

Answer 1

According to the section titled "How to Throw and Catch Exceptions" in Lesson 2 of MCTS Self-Paced Training Kit (Exam 70-536): Microsoft® .NET Framework 2.0—Application Development Foundation, the reason is that the exception may have occurred before variable declarations in the try block (as others have noted already).

Quote from page 25:

"Notice that the StreamReader declaration was moved outside the Try block in the preceding example. This is necessary because the Finally block cannot access variables that are declared within the Try block. This makes sense because depending on where an exception occurred, variable declarations within the Try block might not yet have been executed."