M
midhun.prasad
can we have a return statement inside a finally block in C#..if not why?
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A
Alvin Bruney - ASP.NET MVP
Sure you can. But it won't compile.
The implicit assumption of a finally block is to carry out cleanup code.
This guarantee can only hold true if there is no way to subvert the process.
A return, goto, jump, skip will subvert the process.
Consider a subversion example
try
{
//open database connection
}
finally
{
if some condition
return;
//close database connection isn't closed and leaks memory
}
--
Regards,
Alvin Bruney [MVP ASP.NET]
[Shameless Author plug]
The Microsoft Office Web Components Black Book with .NET
Now Available @ www.lulu.com/owc
Forth-coming VSTO.NET - Wrox/Wiley 2006
The implicit assumption of a finally block is to carry out cleanup code.
This guarantee can only hold true if there is no way to subvert the process.
A return, goto, jump, skip will subvert the process.
Consider a subversion example
try
{
//open database connection
}
finally
{
if some condition
return;
//close database connection isn't closed and leaks memory
}
--
Regards,
Alvin Bruney [MVP ASP.NET]
[Shameless Author plug]
The Microsoft Office Web Components Black Book with .NET
Now Available @ www.lulu.com/owc
Forth-coming VSTO.NET - Wrox/Wiley 2006
G
Guest
No, it is not legal. It is a branching statement. Put simply, you are
altering the flow of the code by bailing out during a clean up operation,
which is not permitted. As a finally ALWAYS runs, put the return outside of
the block.
--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
***************************
Think Outside the Box!
***************************
altering the flow of the code by bailing out during a clean up operation,
which is not permitted. As a finally ALWAYS runs, put the return outside of
the block.
--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
***************************
Think Outside the Box!
***************************