What is the difference between adding cleanup code in finally block and cleanup code after the catch block ?
try
{
//some code
}
catch
{
}
finally
{
//cleanup
}
and
try
{
//some code
}
catch
{
}
//cleanup
If you throw a throwable from the try .. catch block that is not caught by this catch, the cleanup code inside the finally clause will execute and the code immediately after the catch block will not.
In your second case if the code rethrows an exception or return from the catch block then your cleanup code will not be called. In case of finally block it will be executed even if you have an exception or a return statement from the catch block.
The MSDN says:
By using a finally block, you can clean up any resources that are allocated in a try block, and you can run code even if an exception occurs in the try block. Typically, the statements of a finally block run when control leaves a try statement. The transfer of control can occur as a result of normal execution, of execution of a break, continue, goto, or return statement, or of propagation of an exception out of the try statement.
