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• Is there a good Open Source xml ide?

  - by Paul Butcher

  I've looked around, and I'm surprised that I can't find an Open Source equivalent to Oxygen or XMLSpy. i.e. A rich XML editor with support for diverse types of validation, XSLT debugging and profiling, and all the other extra bits that make it more than just a text editor with syntax highlighting. I've seen a few (like Jaxe), that that offer different ways to edit xml documents, but nothing that rolls it all up into an IDE-like application. I'm sure this means I've missed some very worthy project. Can anyone point me towards such a thing?

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• Python IDLE freezes

  - by ooboo

  This is absolutely frustrating, but I am not sure if the following is an issue only on my machine or with IDLE in general. When attempting to print a long list in the shell, and that could happen by accident while debugging, the program crushes and you have to restart it manually. Even worse, if you have a few editor windows open, it always spawns a few sub-processes, and each of these has to be manually shut down from the task manager. Is there any way to avoid that? I am using Python 3, by the way.

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• Saving Bitmap from Clipboard to File Error

  - by Vanwaril

  I'm using OLEDropTarget to get dropped content. It works fine with text. However, I'm not able to figure out how to get bitmaps from CF_BITMAP type data objects and save them to file. My code: HGLOBAL hg = pDataObject->GetGlobalData(CF_BITMAP); if (NULL == hg) { return FALSE; } HBITMAP pData = (HBITMAP)GlobalLock(hg); if(pData == NULL) return false; HBITMAP bmp; ::GetObject(pData,sizeof(HBITMAP),&bmp); CImage cnn; cnn.Attach(bmp); cnn.Save(L"here.bmp",Gdiplus::ImageFormatBMP); I get an error on the Attach, but when debugging I noticed that the GetObject doesn't make a copy into the second HBITMAP.

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• Self hosted WCF console output from service

  - by user989056

  quick one: Is it possible to capture the output stream of a WCF service that is hosted via ServiceHost ( self hosted service) ? I have methods within my WCF service that output useful debugging information, is it possible to send these to it's host's console output? Edit: It appears that I have made an obvious blunder - I was using Debug instead of Console. It is possible to output to the console by using the standard Console output commands in your WCF service class. I have marked the answer that I have found the most useful.

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• How to determine path to project folder in .Net?

  - by paul

  I have a project folder called XSL which contains xsl files used for transforming xml. I use the following code to fetch an xsl file: string html = @"c:\temp\export.html"; XslCompiledTransform transform = new XslCompiledTransform(); Uri uri = new Uri(@"XSL\ToHtml.xsl", UriKind.Relative); transform.Transform(CurrentXmlFile, html); System.Diagnostics.Process.Start(html); This works ok when debugging but when I deploy using clickonce and install it, I get an error - 'Could not find part of the path {my user path}\XSL\ToHtml.xsl' What must I do to correctly reference this path?

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• convert from physical path to virtual path

  - by user710502

  I have this function that gets the fileData as a byte array and a file path. The error I am getting is when it tries to set the fileInfo in the code bewlo. It says 'Physical Path given, Virtual Path expected' public override void WriteBinaryStorage(byte[] fileData, string filePath) { try { // Create directory if not exists. System.IO.FileInfo fileInfo = new System.IO.FileInfo(System.Web.HttpContext.Current.Server.MapPath(filePath)); //when it gets to this line the error is caught if (!fileInfo.Directory.Exists) { fileInfo.Directory.Create(); } // Write the binary content. System.IO.File.WriteAllBytes(System.Web.HttpContext.Current.Server.MapPath(filePath), fileData); } catch (Exception) { throw; } } When debugging it, is providing the filePath as "E:\\WEBS\\webapp\\default\\images\\mains\\myimage.jpg" . And the error message is 'E:/WEBS/webapp/default/images/mains/myimage.jpg' is a physical path, but a virtual path was expected. Also, what it is triggering this to happen is the following call properties.ResizeImage(imageName, Configurations.ConfigSettings.MaxImageSize, Server.MapPath(Configurations.EnvironmentConfig.LargeImagePath));

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• What are the possible causes of JasperException

  - by CitadelCSCadet

  I have a JSP that takes an Arraylist from the session object and removes the items from it. It seemed to be working fine and then out of nowhere when I navigate to that page, the page is blank. I checked the Tomcat log files and in catalina.out I am receiving a JasperException an it is showing it as being on a line with the following for(int i; i < agentItems.size(); i++) agentItems is the name of the ArrayList I am using. I have been debugging it and can't seem to figure out what the problem might be. I have read that a JasperException is sometiems thrown as a JSP's NullPointerException. Is this true or am I just completely overlooking the problem? I have the web application running on a local machine and a intermediate server for development in which both of them have had no trouble. Why could it be that only on this server it is giving me problems?

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• Strange behavior of for loop in scheduler_tick

  - by EpsilonVector

  I'm working on Linux kernel 2.4 (homework) and I inserted the following code into the scheduler_tick function: if (unlikely(rt_task(p)) || (p->policy==SCHED_PROD && p->time_ran>=p->process_expected_time)) { /* * RR tasks need a special form of timeslice management. * FIFO tasks have no timeslices. */ if ((p->policy == SCHED_RR || /*change*/p->policy==SCHED_PROD) && !--p->time_slice) { /*changes*/ if (p->policy == SCHED_PROD){ for (i=0; i<5000; i++){ printk("I'm leeching off SCHED_RR code! %d\n", i); } } /*end changes*/ The addition was added for debugging purposes. For some reason this causes very weird behavior: when a SCHED_PROD process triggers this code (and consequently the loop that follows) the loop counts to about 4600 normally, but then goes back to 4600 each time it counts to 4800, and gets stuck in an infinite loop. What's going on?? EDIT: The i variable is my own.

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• How to show / debug PEAR::DB errors in webpage?

  - by Markus Ossi

  I am connecting to MySQL database on my webpage and have this copy-pasted code for errors: if(DB::isError($db)) die($db->getMessage()); I have the connection code in an outside file called connection.inc that I include at the beginning of my page before the DOCTYPE and html tags. For debugging purposes, how can I print the database errors on my webpage? I thought I could do something like this: echo 'Could not connect to database. The error was:' . $db->getMessage(); but this returns: Fatal error: Call to undefined method DB_mysql::getMessage()

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• What Use are Threads Outside of Parallel Problems on MultiCore Systesm?

  - by Robert S. Barnes

  Threads make the design, implementation and debugging of a program significantly more difficult. Yet many people seem to think that every task in a program that can be threaded should be threaded, even on a single core system. I can understand threading something like an MPEG2 decoder that's going to run on a multicore cpu ( which I've done ), but what can justify the significant development costs threading entails when you're talking about a single core system or even a multicore system if your task doesn't gain significant performance from a parallel implementation? Or more succinctly, what kinds of non-performance related problems justify threading? Edit Well I just ran across one instance that's not CPU limited but threads make a big difference: TCP, HTTP and the Multi-Threading Sweet Spot Multiple threads are pretty useful when trying to max out your bandwidth to another peer over a high latency network connection. Non-blocking I/O would use significantly less local CPU resources, but would be much more difficult to design and implement.

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• ASP.NET MVC View Not posting back to Post method and expecting a parameterless Constructor?

  - by VJ

  Hi, I am trying to post back some data using a viewmodel i have created and it works for me for one of the projects.But I am doin this right now public ActionResult Foo(string userkey) { vm.Value="Xvalue"; return View(vm); } [HttpPost] public ActionResult Foo( MyViewModel vm) { // process input if (inputOK) string value=vm.Value return RedirectToAction("Index"); return View(); } public class MyViewModel { public string Value { get; set; } public SomeClass newobj {get;set;} } public class SomeClass { public int id{get;set;} public string str{get;set;} } So it on debugging never goes into the parameter method for Post although on the view i have added a form and a button that submits and the page inherits from the viewmodel.I get an error saying it expects a parameterless constructor how do I fix this ? . I wrote an post method with no parameters and it does go into that method

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• Oracle data provider hangs IIS worker process when web site is stopped

  - by Greg

  We're experiencing a nasty issue in Oracle 11g Release 2 where the w3wp process takes over and entire processor core, and debugging shows that the Oracle data provider is throwing ThreadAbortExceptions infinitely. A developer found this issue by doing the following: 1) Browse a web site that uses Oracle data connections locally (http://localhost/OracleWebSite) - we use IIS, not the ASP.NET dev server, for all of our sites. This ensures that the w3wp process is running and that an active Oracle pool of connections exists in the app pool. 2) Stop the web site (or perform a Rebuild All operation in Visual Studio on the web site in question). Our Oracle connection handling in the affected applications (all Oracle web apps) is well-established and robust. This issue does not occur if we disable connection pooling. This issue does not occur in Oracle 11g Release 1.

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• How do I programmatically nullify a File Attachment in InfoPath Forms

  - by Doctor Zinda

  Howdy all, I'm running into a problem with some InfoPath C# code while trying to remove an attachment from a form. Basically the process is: User opens form User clicks button File attachment is cleared I've tried adding a blank attachment to my schema that never becomes populated, then setting the original field's value equal to that value by the method below. When debugging the form I catch an error: Schema validation found non-data type errors. Any tips here would be appreciated. public void BTN_ClearAttachment_Clicked(object sender, ClickedEventArgs e) { try { _OriginalAttachment.SetValue(_BLANK_ATTACHMENT.Value); } catch (Exception ex) { _ErrorField.SetValue(ex.Message + " : " + ex.StackTrace); } } Thanks, Dr Z Edit - P.S. I should clear up that both _OriginalAttachment & _ErrorField are both XPathNavigators, pointing at different schema elements. I've verified that these XPathNavigators are both pointing at valid schema elements.

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• No parameterless constructor defined for this object when simply copying site

  - by jaffa

  I'm getting the above error. All I have done is copied an existing site and set-up debugging to use a different port using IISExpress in Visual Studio. Any ideas why I would suddenly get this error? Normally I get this error when StructureMap cannot for some reason resolve a dependency to inject into a controller. But this has me stumped. The code-base is the same. All I've done is copied the code into another folder!?!

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• MonoRail - Clearing value on edit form submission doesn't trigger validation

  - by Justin

  Hey, In a MonoRail app I have an add/edit view. On add if I don't pick a value for a dropdown I get a validation error and am forced to pick a value. However, if I then edit that same item and reset the dropdown back to the first item ("Select an Item", "0"), it saves and doesn't say it was invalid. Debugging the entity sent back to the server, I can see that it's sending the original value for the dropdown instead of the new value of "0". What's going on here? The first thing I would expect is that it would trigger the validation since the dropdown value isn't set. The second thing I would expect is that it would send the new value I send, not the original. It does send the new value if I change it to another value, but it's as if it has internal logic that says - "I'm updating this entity and a new value was not passed, just don't change the entity value." Thanks, Justin

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• Object reference not set to an instance of an object - how to find the offending object name in the

  - by Jason

  This is the bane of my programming existence. After deploying an application, when this error crops up, no amount of debug dump tells you WHAT object was not instantiated. I have the call stack, that's great, it tells me roughly where the object is, but is there any way to get .NET to tell me the actual name of the object? If you catch them while debugging, of course the program breaks right on the offending creature, but if it happens after the program is in the wild, good luck. There has to be a way. I've explored the exceptions returned in these instances and there is just nothing helpful.

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• Difference between debug and release.

  - by atch

  Why when I'm debugging in debug mode everything in code below works as suppose to but when I switch to release I'm getting strange result? void say_hello(int argc, char* argv[])//In release mode argc has different values from 124353625 to 36369852 <include iostream> { std::cout << "In say_hello()\n"; } int main(int argc, char* argv[]) { say_hello(3,argv);//when instead of literal I enter "argc" everything is ok. return 0; } Thanks for help.

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• "Invalid Procedure Call or Argument", but only in a compiled or P-Code EXE

  - by Rob Perkins

  I have a VB6 program which I've been maintaining for ten years. There is a subroutine in the program called "Prepare Copy", which looks like this: Public Sub PrepareCopy() Set CopiedShapes = New Collection End Sub Where CopiedShapes is dimmed out as a VB6 Collection. That code is now kicking out a Runtime Error 5 -- Invalid Procedure Call or Argument. It appears from the interstitial debugging code that the error arises between the Public Sub PrepareCopy() and the Set CopiedShapes = New Collection lines. That's right. The VB6 error is happening between two lines of my code. I can think of no other explanation for this. It's behaving this way on my development machine and two client computers. It is only happening in runtime code, and does not appear to make a difference whether I compile it or use P-Code What I'm asking for here is speculation as to what causes this sort of thing to happen.

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• How to mark a method as "ignore all handled exception" + "step through"? Even when user has selected

  - by Wolf5

  I want to mark a method as "debug step through" even if an exception is thrown (and catched within) the function. This is because 99% of the times I know this function will throw an exception (Assembly.GetTypes), and since this function is in a library I wish to hide this normal exception. (Why did MS not add an exceptionless GetTypes() call?) I have tried this but it still breaks the code when debugging: [DebuggerStepThrough] [DebuggerStepperBoundary] private Type[] GetTypesIgnoreMissing(Assembly ass) { Type[] typs; try { typs = ass.GetTypes(); } catch (ReflectionTypeLoadException ex) { typs = ex.Types; } var newlist = new List<Type>(); foreach (var type in typs) { if (type != null) newlist.Add(type); } return newlist.ToArray(); } Anyone know of a way to make this method 100% stepthrough even if ass.GetTypes() throw an exception in debug mode? It has to step through even when "Break on Thrown exceptions" is on. (I do not need to know I can explicitly choose to ignore that exact type of exception in the IDE)

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• why does $.ajax(..) not work for me?

  - by dr jerry

  I'm running jquery from a file. And I'm trying to load a svg file from my localhost to populate a svg canvas. However that does not work as expected. What I do from filesystem: $.ajax({ url: url , timeout: 1000, complete: function(xml) { alert('complete'); }, success: function(xml, status, xreq) { alert('success'); }, error: function() { alert('error'); } }); the url reads: http://localhost/image.svg, when I read this url directly from an addressbar from the browser, the pages remains white but the pagesource displays the source of image.svg. Debugging the $.ajax code above, reveals that the success: method is hit, but xml response remains empty. Any help is greatly appreciated. regards, jeroen.

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• Breakpoint pointing out "objc_autoreleaseNoPool"

  - by Andrew

  So I'm debugging an app in preperation for its app so release, and I enabled a universal breakpoint for "All Exceptions". Since then, everytime I run the app, the console prints: Catchpoint 2 (throw)Pending breakpoint 1 - "objc_exception_throw" resolved objc[11765]: Object 0x8f18ff0 of class __NSCFLocale autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug objc[11765]: Object 0x8f190a0 of class __NSCFNumber autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug objc[11765]: Object 0x8f1fef0 of class __NSCFLocale autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug Literally printed 3 times. I have no idea what this means but it looks bad. Any advice would be appreciated.

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• Activity monitor doesnt display process name

  - by Mohsin Khawas

  Hi, I have an application, when I see that application in "Activity Monitor" the applications Process Name is displayed nothing. Only the application icon is displayed. I tried debugging this by getting processInfo of the app, I got the application name correct. Even tried with the "top" command, I got the application name correct. The target name and settings also shows the same, only the activity monitor got wrong. Is it something I missed so that activity monitor is displaying nothing. M

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• [PHP] - Lowering script memory usage in a "big" file creation

  - by Riccardo

  Hi there people, it looks like I'm facing a typical memory outage problem when using a PHP script. The script, originally developed by another person, serves as an XML sitemap creator, and on large websites uses quite a lot of memory. I thought that the problem was related due to an algorithm holding data in memory until the job was done, but digging into the code I have discovered that the script works in this way: open file in output (will contain XML sitemap entries) in the loop: ---- for each entry to be added in sitemap, do fwrite close file end Although there are no huge arrays or variables being kept in memory, this technique uses a lot of memory. I thought that maybe PHP was buffering under the hood the fwrites and "flushing" data at the end of the script, so I have modified the code to close and open the file every Nth record, but the memory usage is still the same.... I'm debugging the script on my computer and watching memory usage: while script execution runs, memory allocation grows. Is there a particular technique to instruct PHP to free unsed memory, to force flushing buffers if any? Thanks

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• Is it possible to raise an error if a variable assignment in a select returns multiple values?

  - by Brann

  I just found a bug on one of my softwares where I had forgotten a where clause. The code was something like that : declare @foo bigint declare @bar bigint select @foo = foo, @bar=bar from tbFooBar where (....a long list of condition goes there) (... and an extra condition should have went there but I forgot it) Unfortunately, the where clause I forgot was useful in very specific corner cases and the code went through testing successfully. Eventually, the query returned two values instead of one, and the resulting bug was a nightmare to track down (as it was very difficult to reproduce, and it wasn't obvious at all that this specific stored procedure was causing the issue we spotted) Debugging would have been a lot easier if the @foo=foo had raised an exception instead of silently assigning the first value out of multiple rows. Why is that this way? I can't think of a situation where one would actually want to do that without raising an error (bearing in mind the clauses 'distinct' and 'top' are there for a reason) And is there a way to make sql server 2008 raise an error if this situation occurs ?

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• HTTP POSTed files automatically uploaded to root directory

  - by Baddie

  I just inherited an ASP.NET WebForms web application that I was tasked with refactoring. One of the features is a file upload and while debugging I noticed that as soon as a file is posted to a certain page/handler, it is automatically uploaded to the root directory of the application. The file is then moved to the proper location. I can't seem to figure out whats causing this automatic upload of the file. Is there something I'am overlooking in ASP.NET WebForms that allows this to happen? Is it an IIS configuration or something?

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