Error Ca2000 Microsoft.reliability

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up CA2000 : Microsoft.Reliability : Call System.IDisposable.Dispose on object 'dt' before all references to it are out of scope up vote 6 down vote favorite 1 I need some advice.When I run code analysis tool I get the following Warning 1 CA2000 : Microsoft.Reliability : In method 'Class1.test.testMethod()', object 'dt' is not disposed along all exception paths. Call System.IDisposable.Dispose on object 'dt' before all references to it are out of scope. How to resolve the warnings?? public void testMethod() { DataTable dt = new DataTable(); DataTable dt1= new DataTable(); try { if (dt.Rows.Count == 0) { dt1.Merge(dt); } } catch { throw; } finally { if (dt != null) dt.Dispose(); if (dt1 != null) dt1.Dispose(); } } c# share|improve this question edited May 23 '13 at 13:57 asked May 20 '13 at 11:07 salique ahmad 3114 object 'dt' is not disposed along all exception paths I think the compiler is actually complaining about the empty catch block, but using a using statement (like the currently top rated answer) should be the best practice as you don't even need to call dispose then. EDIT: +1 for being bothered about warnings. –Izzy May 20 '13 at 12:43 add a comment| 8 Answers 8 active oldest votes up vote 5 down vote Not really sure why you are getting that error, but you can try using statement block in your method and see if the error goes away. Try it like: public void testMethod() { using (DataTable dt = new DataTable()) using (DataView dv = new DataView(dt)) { //your work } } share|improve this answer answered May 20 '13 at 11:11 Habib 146k16215267 Yeah, sorry - I noticed that after I posted - I deleted the comment and the downvote. Your syntax is definitely preferred over the OP's, but you did miss why the error's happening. –Dan Puzey May 20 '13 at 11:25 @DanPuzey, missing tools on my machine, otherwise I would have confirmed, but still ,my guess is that instantiation is done outside the try block. –Habib May 20 '13 at 11:26 @saliqueahmad, you are welcome, did that reso

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to get rid of CA2000 warning when http://stackoverflow.com/questions/16648158/ca2000-microsoft-reliability-call-system-idisposable-dispose-on-object-dt ownership is transferred? up vote 14 down vote favorite 2 The following code generates two CA2000 warnings (among others, but that's not the point). public sealed class Item: IDisposable { public void Dispose() {} } public sealed class ItemContainer { public void Add(Item item) { } } public sealed class Test: IDisposable { private ICollection itemCollection; private ItemContainer itemContainer; private void Add(Item item) { itemCollection.Add(item); } public void http://stackoverflow.com/questions/3932131/how-to-get-rid-of-ca2000-warning-when-ownership-is-transferred Initialize() { var item1 = new Item(); // no warning itemCollection.Add(item1); var item2 = new Item(); // CA2000: call Dispose on object item2 Add(item2); var item3 = new Item(); // CA2000: call Dispose on object item3 itemContainer.Add(item3); } public void Dispose() {} } Note that there is no warning generated for item1. It seems, Code Analysis assumes the ICollection will take responsibility of the item and eventually dispose it. Is there a way to mark my Add methods, so that the warning goes away? I'm looking for something similar to ValidatedNotNullAttribute for CA1062. Edit: to make it clear: this is not my real code. In the real code, everything is properly disposed. It's just that CA does not recognize that the call to my Add methods transfers ownership. I would like it to treat my Add methods in the same way it treats ICollection.Add. Disposing in the same scope is not an option. c# visual-studio-2010 code-analysis share|improve this question edited Apr 19 '12 at 8:36 asked Oct 14 '10 at 10:16 Henrik 19.5k42874 add a comment| 4 Answers 4 active oldest votes up vote 9 down vote Do you want to fix the code or just suppress the warnings? Suppressin

(MEF): Aggregate Catalog How to Avoid the CA2000 Error from Code Analysis by Larry Spencer Friday, June 17, 2011 4:05 PM In my continuing quest to live a Good Life, I have been turning Code Analysis http://www.fascinatedwithsoftware.com/blog/post/2011/06/17/How-to-Avoid-the-CA2000-Error-from-Code-Analysis.aspx on for all my Visual Studio 2010 projects. Today, I thought the Universe was rewarding my good intentions with a spurrious error message. Then I found Enlightenment. I want to pass on to you the https://www.devexpress.com/Support/Center/Question/Details/B223731 problem and the solution. The following code provoke error CA2000 from Code Anaysis: CA2000 : Microsoft.Reliability : In method 'CA2000.MakeStream1()', object 'strm' is not disposed along all exception paths. Call System.IDisposable.Dispose on object 'strm' before error ca2000 all references to it are out of scope. static FileStream MakeStream1() { var strm = File.Create(@"test.txt"); strm.WriteByte(0); return strm; } But wait! I promise that I'm going to Dispose() the Stream in the calling method! Does this mean that I can't return an IDisposable without drawing a CA2000 penalty? No. The reason for the slap on the wrist is that the WriteByte call could throw an Exception, in which error ca2000 microsoft.reliability case the strm variable would be orphaned -- neither Disposed nor returned. The solution is to demonstrate to Code Analysis that you will at least not orphan the Stream in the method being analyzed. static FileStream MakeStream2() { var strm = File.Create(@"test.txt"); try { strm.WriteByte(0); } catch { // Code Analysis is now satisfied that // we're Disposing our stream in the // event of a problem. strm.Dispose(); throw; } return strm; } 0354190e-5518-430f-989d-0aa1fb024537|5|3.0|27604f05-86ad-47ef-9e05-950bb762570c Tags: Code Analysis, Visual Studio All | General E-mail | Kick it! | DZone it! | del.icio.us Permalink | Comments (1) | Post RSS Comments (1) - 8/31/2011 10:55:42 AM # very helpful, thanks a bunch! Peter Add comment Name* E-mail* Website Comment* Notify me when new comments are added The captcha text was not valid. Please try again. About the Author Larry Spencerdevelops software with the Microsoft .NET Framework for ScerIS, a document-management companyin Sudbury, MA. RecentPosts Boston Code Camp 24: Test-Driven Development of JavaScript PatternsComments: 0Rating: 3 / 2Reliable JavaScript PublishedComments: 0Rating: 5 / 1Boston Code Camp 23: How to Write a JavaScript MasterpieceComments: 0Not rated yetBoston Code Camp 22: Solving an HTTP Problem with PromisesComments: 0Not rated yetBoston Code Camp 22: Promises vs CallbacksComments: 0Not rated yetBoston Code Camp 22: Unit-Testing PromisesComments: 0N

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