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  • Cannot delete an image file that is shown in a listview

    - by Enrico
    Hello all, In my listview I show thumbnails of small images in a certain folder. I setup the listview as follows: var imageList = new ImageList(); foreach (var fileInfo in dir.GetFiles()) { try { var image = Image.FromFile(fileInfo.FullName); imageList.Images.Add(image); } catch { Console.WriteLine("error"); } } listView.View = View.LargeIcon; imageList.ImageSize = new Size(64, 64); listView.LargeImageList = imageList; for (int j = 0; j < imageList.Images.Count; j++) { var item = new ListViewItem {ImageIndex = j, Text = "blabla"}; listView.Items.Add(item); } The user can rightclick on an image in the listview to remove it. I remove it from the listview and then I want to delete this image from the folder. Now I get the error that the file is in use. Of course this is logical since the imagelist is using the file. I tried to first remove the image from the imagelist, but I keep on having the file lock. Can somebody tell me what I am doing wrong? Thanks!

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  • MVC 2.0 - JqGrid Sorting with Mulitple Tables

    - by Billy Logan
    I am in the process of implementing the jqGrid and would like to be able to use the sorting functionality. I have run into some issues with sorting columns that are related to the base table. Here is the script to load the grid: public JsonResult GetData(GridSettings grid) { try { using (IWE dataContext = new IWE()) { var query = dataContext.LKTYPE.Include("VWEPICORCATEGORY").AsQueryable(); ////sorting query = query.OrderBy<LKTYPE>(grid.SortColumn, grid.SortOrder); //count var count = query.Count(); //paging var data = query.Skip((grid.PageIndex - 1) * grid.PageSize).Take(grid.PageSize).ToArray(); //converting in grid format var result = new { total = (int)Math.Ceiling((double)count / grid.PageSize), page = grid.PageIndex, records = count, rows = (from host in data select new { TYPE_ID = host.TYPE_ID, TYPE = host.TYPE, CR_ACTIVE = host.CR_ACTIVE, description = host.VWEPICORCATEGORY.description }).ToArray() }; return Json(result, JsonRequestBehavior.AllowGet); } } catch (Exception ex) { //send the error email ExceptionPolicy.HandleException(ex, "Exception Policy"); } //have to return something if there is an issue return Json(""); } As you can see the description field is a part of the related table("VWEPICORCATEGORY") and the order by is targeted at LKTYPE. I am trying to figure out how exactly one goes about sorting that particular field or maybe even a better way to implement this grid using multiple tables and it's sorting functionality. Thanks in advance, Billy

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  • LinqToSql - ChangeConflictException. when submiting child and parent

    - by ari
    This problem drives me crazy. Here's the code using (BizNetDB db = new BizNetDB()) { var dbServiceCall = db.ServiceCalls.SingleOrDefault(x => x.ServiceCallID == serviceCallDetail.ServiceCallID); var dbServiceCallDetail = dbServiceCall.ServiceCallDetaills.SingleOrDefault(x=> x.ServiceCallDetailID == serviceCallDetail.ServiceCallDetailID); if (dbServiceCallDetail == null) { dbServiceCallDetail = new Data.ServiceCallDetaill(); dbServiceCall.ServiceCallDetaills.Add(dbServiceCallDetail); } dbServiceCallDetail.EndSession = serviceCallDetail.EndSession; dbServiceCallDetail.ExitTime = serviceCallDetail.ExitTime; dbServiceCallDetail.Solution = serviceCallDetail.Solution; dbServiceCallDetail.StartSession = serviceCallDetail.StartSession; serviceCallDetail.SessionMinutes = (serviceCallDetail.EndSession - serviceCallDetail.StartSession).Minutes; serviceCallDetail.DriveMinutes = serviceCallDetail.ExitTime.HasValue ? (serviceCallDetail.StartSession - serviceCallDetail.ExitTime.Value).Minutes : 0; var totalMinutes = (from d in db.ServiceCallDetaills .Where(x => x.ServiceCallID == serviceCallDetail.ServiceCallID && x.ServiceCallDetailID != dbServiceCallDetail.ServiceCallDetailID) group d by d.ServiceCallID into g select new { SessionMinutes = g.Sum(x => x.SessionMinutes), DriveMinutes = g.Sum(x => x.DriveMinutes) }).First(); dbServiceCall.SessionMinutes = totalMinutes.SessionMinutes + serviceCallDetail.SessionMinutes; dbServiceCall.DriveMinutes = totalMinutes.DriveMinutes + serviceCallDetail.DriveMinutes; try { db.SubmitChanges(); } catch (ChangeConflictException ex) { db.ChangeConflicts.ResolveAll(RefreshMode.OverwriteCurrentValues); db.SubmitChanges(); } The second Submit did solve the problem.. but I want to solve it from the root! when I disabled this lines (The parent changes): dbServiceCall.SessionMinutes = totalMinutes.SessionMinutes + serviceCallDetail.SessionMinutes; dbServiceCall.DriveMinutes = totalMinutes.DriveMinutes + serviceCallDetail.DriveMinutes; everithing is Ok. please help...

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  • jqModal/JQuery problem, div not updating with new content?

    - by echoesofspring
    I'm hoping someone can point a relative jQuery/jqModal newbie in the right direction for debugging this error. I'm loading an html fragment into a div and then use jqModal to display that div as a modal dialog. The problem is that the div is displayed but not with my updated html. I'm showing my jqModal dialog in the response from a jquery call, function foo is called from an onclick event: function foo(url) { $.ajax({ type: "GET", url: url, success: function(msg) { $('#ajaxmodal').html(msg); $('#ajaxmodal').jqmShow(); } }); } ajaxmodal is a simple div. Initially I thought the problem must be in the html snippet (msg) I'm passing to the callback, but I don't think that's it, I get the err (see below) even when I comment out the $('#ajaxmodal').html(msg) line or pass it hardcode html. I think I have jqModal configured correctly, other calls using our ajaxmodal div work correctly, I'm able to display the modal, update the content based the server response, etc. When I try to debug in firebug, I get the following error following the call to .jqmShow(). I have seen the err on occasion in other places when it seemed maybe the page hadn't loaded yet, and I confess I'm confused about that, since we've wrapped our jqModal selectors in a $(document).ready() call, so maybe I have a larger issue that this call just happens to trigger? From the jquery.jqModal.js file, line 64: js err is $(':input:visible',h.w)[0] is undefined in the line: f=function(h){try{$(':input:visible',h.w)[0].focus();}catch(_){}} When I step through this in firefox, h.w[0] seems ok, it references our '#ajaxmodal' div. Thanks in advance for any suggestions in tracking this down?

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  • java TrayIcon using image with transparent background

    - by Jack
    I am using the following code to set a tray icon in Windows and Linux. It works wonderful in Windows and works okay in Linux. In Linux (Ubuntu) I have my panel set to be (somewhat) transparent and when I add a GIF (with a transparent background) the background of the icon shows up all grey and ugly (see image, green diamond "!")....Any ideas on how to make the GIF image I am adding "keep" its transparent background? and the image I am using, if you'd like to test: import java.awt.*; import java.awt.event.*; public class TrayFun { static class ShowMessageListener implements ActionListener { TrayIcon trayIcon; String title; String message; TrayIcon.MessageType messageType; ShowMessageListener( TrayIcon trayIcon, String title, String message, TrayIcon.MessageType messageType) { this.trayIcon = trayIcon; this.title = title; this.message = message; this.messageType = messageType; } public void actionPerformed(ActionEvent e) { trayIcon.displayMessage(title, message, messageType); } } public static void main(String args[]) { Runnable runner = new Runnable() { public void run() { if (SystemTray.isSupported()) { final SystemTray tray = SystemTray.getSystemTray(); Image image = Toolkit.getDefaultToolkit().getImage("green_info.png"); PopupMenu popup = new PopupMenu(); final TrayIcon trayIcon = new TrayIcon(image, "The Tip Text", popup); trayIcon.setImageAutoSize(true); MenuItem item = new MenuItem("Close"); item.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tray.remove(trayIcon); } }); popup.add(item); try { tray.add(trayIcon); } catch (AWTException e) { System.err.println("Can't add to tray"); } } else { System.err.println("Tray unavailable"); } } }; EventQueue.invokeLater(runner); } }

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  • How to resolve user registration and activation email error in Django registration?

    - by user2476295
    So I was just trying to setup a basic user authentication in Django and downloaded a django registration app with templates. Now when I run the server at 127.0.0.1:8000/accounts/register/ I get a basic registration page, I fill in the details and when I click submit I get this error "NoReverseMatch at /accounts/register/" Error during template rendering In template Users/sudhasinha/mysite/mysite/registration/templates/registration/activation_email.txt, error at line 4 'url' requires a non-empty first argument. The syntax changed in Django 1.5, see the docs. 1 {% load i18n %} 2 {% trans "Activate account at" %} {{ site.name }}: 3 4 http://{{ site.domain }}{**% url registration_activate activation_key %**} 5 6 {% blocktrans %}Link is valid for {{ expiration_days }} days.{% endblocktrans %} 7 This is what my activation_email.txt looks like: {% load i18n %} {% trans "Activate account at" %} {{ site.name }}: http://{{ site.domain }}{% url registration_activate activation_key %} {% blocktrans %}Link is valid for {{ expiration_days }} days.{% endblocktrans %} And this is what my registration_form.html looks like: {% extends "base.html" %} {% load i18n %} {% block content %} <form method="post" action="."> {{ form.as_p }} <input type="submit" value="{% trans 'Submit' %}" /> </form> {% endblock %} I have very minimal experience with Django and would appreciate some help to resolve this error. My urls seem to be setup correctly but I will post it if needed. Also pardon my horrible formatting

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  • What is the correct way to pass an object to WebApi RC controller

    - by Diver Dan
    I have a webapi project running rc I have a very basic controlller like [System.Web.Http.HttpPost] public void Update(Business business) { //if (business.Id == Guid.Empty) //{ // throw new HttpResponseException("Business ID not provided", HttpStatusCode.BadRequest); //} _repository.Update(business); //if (!isUpdated) //{ // throw new HttpResponseException("Business not found", HttpStatusCode.NotFound); //} } I found an example using HttpClient however it doesnt work with rc using (var client = new HttpClient()) { try { string url = string.Format("{0}{1}", ConfigurationManager.AppSettings["ApiBaseUrl"].ToString(),apiMethod); HttpRequestMessage request = new HttpRequestMessage(); MediaTypeFormatter[] formatter = new MediaTypeFormatter[] { new JsonMediaTypeFormatter() }; var content = request.CreateContent<Business>( business, MediaTypeHeaderValue.Parse("application/json"), formatter, new FormatterSelector()); HttpResponseMessage response = client.PostAsync(url, content).Result; return response.Content.ToString(); } catch (Exception ex) { return null; } } I get an error Method not found: 'Void System.Net.Http.Headers.HttpHeaders.AddWithoutValidation(System.String, System.String)'. Passing the data from jquery is a piece of cake however I need call the api from code behind vs client side. Can someone point me in the right direction for calling the webapi? Thank you

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  • android bindservice

    - by mnish
    hi, I get null pointer exception at line mService.start() when i try to bind to an already started service. I do the same thing from different activity(where the service gets started) everythig goes right. All these activities are part of one application. What do you think I do wrong? public class RouteOnMap extends MapActivity{ private static final int NEW_LOCATION = 1; private static final int GPS_OFF = 2; private MapView mMapView; private ILocService mService; private boolean mServiceStarted; private boolean mBound; private Intent mServiceIntent; private double mLatitude, mLongitude; private ServiceConnection connection = new ServiceConnection() { public void onServiceConnected(ComponentName className, IBinder iservice) { mService = ILocService.Stub.asInterface(iservice); mBound = true; } public void onServiceDisconnected(ComponentName className) { mService = null; mBound = false; } }; public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.mapview); mMapView = (MapView) findViewById(R.id.mapview); mMapView.setBuiltInZoomControls(true); mServiceIntent = new Intent(); mLatitude = 0.0; mLongitude = 0.0; mBound = false; } @Override public void onStart(){ super.onStart(); mServiceIntent.setClass(this, LocationService.class); //startService(mServiceIntent); if(!mBound){ mBound = true; this.bindService(mServiceIntent, connection, Context.BIND_AUTO_CREATE); } } @Override public void onResume(){ super.onResume(); try { mService.start(); } catch (RemoteException e) { e.printStackTrace(); } } @Override public void onPause(){ super.onPause(); if(mBound){ this.unbindService(connection); } } @Override protected boolean isRouteDisplayed() { // TODO Auto-generated method stub return false; } }

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  • javascript class calling XMLHttpRequest internally, then handling onreadystatechange

    - by Radu M
    this thing almost works: function myClass(url) { this.source = url; this.rq = null; this.someOtherProperty = "hello"; // open connection to the ajax server this.start = function() { if (window.XMLHttpRequest) { this.rq = new XMLHttpRequest(); if (this.rq.overrideMimeType) this.rq.overrideMimeType("text/xml"); } else this.rq = new ActiveXObject("Microsoft.XMLHTTP"); try { this.rq.onreadystatechange = connectionEvent; this.rq.open("GET", this.source, true); this.rq.send(null); this.state = 1; } catch (err) { // some error handler here } } function connectionEvent() { alert("i'm here"); alert("this doesnt work: " + this.someOtherProperty); } } // myClass so it's nothing more than having the XMLHttpRequest object as a member of my class, instead of globally defined, and invoking it in the traditional way. however, inside my connectionEvent callback function, the meaning of "this" is lost, even though the function itself is scoped inside myClass. i also made sure that the object that i instantiate from myClass is kept alive long enough (declared global in the script). in all the examples of using javascript classes that i saw, "this" was still available inside the inner functions. for me, it is not, even if i take my function outside and make it a myClass.prototype.connectionEvent. what am i doing wrong? thank you.

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  • Getting a binary file from resource in C#

    - by Jesse Knott
    Hello, I am having a bit of a problem, I am trying to get a PDF as a resource in my application. At this point I have a fillable PDF that I have been able to store as a file next to the binary, but now I am trying to embed the PDF as a resource in the binary. byte[] buffer; try { s = typeof(BattleTracker).Assembly.GetManifestResourceStream("libReports.Resources.DAForm1594.pdf"); buffer = new byte[s.Length]; int read = 0; do { read = s.Read(buffer, read, 32768); } while (read > 0); } catch (Exception e) { throw new Exception("Error: could not import report:", e); } // read existing PDF document PdfReader r = new PdfReader( // optimize memory usage buffer, null ); Every time I run the code I get an error saying "Rebuild trailer not found. Original Error: PDF startxref not found" When I was just opening the file via a path to the static file in my directory it worked fine. I have tried using different encodings UTF-8, UTF-32, UTF-7, ASCII, etc etc.... As a side note I had the same problem with getting a Powerpoint file as a resource, I was finally able to fix that problem by converting the Powerpoint to xml and using that. I have considered doing the same for the PDF but I am referencing elements by field name which does not seem to work with XML PDFs. Can anyone help me out with this? Thanks in advance!

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  • Best way to close nested streams in Java?

    - by dirtyvagabond
    What is considered the best, most comprehensive way to close nested streams in Java? For example, consider the setup: FileOutputStream fos = new FileOutputStream(...) BufferedOS bos = new BufferedOS(fos); ObjectOutputStream oos = new ObjectOutputStream(bos); I understand the close operation needs to be insured (probably by using a finally clause). What I wonder about is, is it necessary to explicitly make sure the nested streams are closed, or is it enough to just make sure to close the outer stream (oos)? One thing I notice, at least dealing with this specific example, is that the inner streams only seem to throw FileNotFoundExceptions. Which would seem to imply that there's not technically a need to worry about closing them if they fail. Here's what a colleague wrote: Technically, if it were implemented right, closing the outermost stream (oos) should be enough. But the implementation seems flawed. Example: BufferedOutputStream inherits close() from FilterOutputStream, which defines it as: 155 public void close() throws IOException { 156 try { 157 flush(); 158 } catch (IOException ignored) { 159 } 160 out.close(); 161 } However, if flush() throws a runtime exception for some reason, then out.close() will never be called. So it seems "safest" (but ugly) to mostly worry about closing FOS, which is keeping the file open. What is considered to be the hands-down best, when-you-absolutely-need-to-be-sure, approach to closing nested streams? And are there any official Java/Sun docs that deal with this in fine detail?

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  • Exception during iteration on collection and remove items from that collection

    - by Muhammad Kashif Nadeem
    I remove item from ArrayList in foreach loop and get follwing exception. Collection was modified; enumeration operation may not execute. How can I remove items in foreach Following is my code: /* * Need to remove all items from 'attachementsFielPath' which does not exist in names array. */ try { string attachmentFileNames = txtAttachment.Text.Trim(); // Textbox having file names. string[] names = attachmentFileNames.Split(new char[] { ';' }); int index = 0; // attachmentsFilePath is ArrayList holding full path of fiels user selected at any time. foreach (var fullFilePath in attachmentsFilePath) { bool isNeedToRemove = true; // Extract filename from full path. string fileName = fullFilePath.ToString().Substring(fullFilePath.ToString().LastIndexOf('\\') + 1); for (int i = 0; i < names.Length; i++) { // If filename found in array then no need to check remaining items. if (fileName.Equals(names[i].Trim())) { isNeedToRemove = false; break; } } // If file not found in names array, remove it. if (isNeedToRemove) { attachmentsFilePath.RemoveAt(index); isNeedToRemove = true; } index++; } } catch (Exception ex) { throw ex; }

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  • Why in this example (got from msdn), in GetEnumerator method , new PeopleEnum returns IEnumerator?

    - by odiseh
    Hi guys, Why in this example (got from msdn), in GetEnumerator method , PeopleEnum returns IEnumerator? public class Person { public Person(string fName, string lName) { this.firstName = fName; this.lastName = lName; } public string firstName; public string lastName; } public class People : IEnumerable { private Person[] _people; public People(Person[] pArray) { _people = new Person[pArray.Length]; for (int i = 0; i < pArray.Length; i++) { _people[i] = pArray[i]; } } //why??? IEnumerator IEnumerable.GetEnumerator() { return (IEnumerator) GetEnumerator(); } public PeopleEnum GetEnumerator() { return new PeopleEnum(_people); } } public class PeopleEnum : IEnumerator { public Person[] _people; // Enumerators are positioned before the first element // until the first MoveNext() call. int position = -1; public PeopleEnum(Person[] list) { _people = list; } public bool MoveNext() { position++; return (position < _people.Length); } public void Reset() { position = -1; } object IEnumerator.Current { get { return Current; } } public Person Current { get { try { return _people[position]; } catch (IndexOutOfRangeException) { throw new InvalidOperationException(); } } } }

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  • zxing project on android

    - by Aisthesis Cronos
    Hello everybody Many weeks ago,I tried to work on a mini project on Android OS requires ZXING, I followed several tutorials on this web site and on other Example: tuto1, and many tags and tutorials here tuto2, tuto3 ... But I failed each time. I can't import the android project into eclipse IDE to compile it with my code "not via Intent zxing APK-and my program like this example : private Button.OnClickListener btScanListener = new Button.OnClickListener() { public void onClick(View v) { Intent intent = new Intent("com.google.zxing.client.android.SCAN"); intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); try { startActivityForResult(intent, REQUEST_SCAN); } catch (ActivityNotFoundException e) { Toast.makeText(Main.this, "Barcode Scanner not intaled ", 2000).show(); } } }; public void onActivityResult(int reqCode, int resCode, Intent intent) { if (REQUEST_SCAN == reqCode) { if (RESULT_OK == resCode) { String contents = intent.getStringExtra("SCAN_RESULT"); Toast.makeText(this, "Succès : " + contents, 2000).show(); } else if (RESULT_CANCELED == resCode) { Toast.makeText(this, "Scan annulé", 2000).show(); } } }` ". I feel disappointed, frustrated and sad. I still have errors after importing the project. I tried both versions 1.5 and 1.6 zxing I tried to import the project c: \ ZXing-1.6 \ android, and an other new project with c: \ ZXing-1.6 \ zxing-1.6 \ android,I cheked out SVN: ttp: / / zxing.googlecode.com / svn / trunk / zxing-read-only with tortoiseSVN and reproduce the same work, but unfortunately without results! I really fed up with myself ... Please help me to solve this problem.how can I import the project and compile it correctly in my own project? 1 - I use Windows 7 64-bit Home Premium 2 - Eclipse IDE for Java EE Web Developers. Version: Helios Service Release 2 Build id: 20110218-0911 What is the effective and sure method to run this, otherwise if there is a video or a guide details or someone who already done it previously I would really appreciate it if someone would help me out

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  • Creating customized .dmg files upon download

    - by Marten
    I want to distribute a cross-platform application for which the executable file is slightly different, depending on the user who downloaded it. This is done by having a placeholder string somewhere in the executable that is replaced with something user-specific upon download. The webserver that has to do these string replacements is a Linux machine. For Windows, the executable is not compressed in the installer .exe, so the string replacement is easy. For uncompressed Mac OS X .dmg files, this is also easy. However, .dmg files that are compressed with either gzip or bzip2 are not so easy. For example, in the latter case, the compressed .dmg is not one big bzip2-compressed disk image, but instead consists of a few different bzip2-compressed parts (with different block sizes) and a plist suffix. Also, decompressing and recompressing the different parts with bzip2 does not result in the original data, so I'm guessing Apple uses some different parameters to bzip2 than the command-line tool. Is there a way to generate a compressed .dmg from an uncompressed one on Linux (which does not have hdiutil)? Or maybe another suggestion for creating customized applications without pregenerating them? It should work without any input by the user.

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  • Jquery Insert element before <tr>

    - by Jerry
    Hi all I am trying to insert a block element Insert something before another . I am not sure if I am using the right method but here is my code. Hope you guys can help. Thanks! Jquery $("#addMatch").click(function(){ $("<td>New insert</td>").insertBefore("#addMatch").closest('tr'); return false; //this would insert the <td>New insert</td> before the //<td><input type="button" id="addMatch" name="addMatch" value="Add //Match" </td> but not <tr> }); Html <tr> <td>some data</td> </tr> //can't tell how many tr would show before the last "addMatch" button. It's dynamic. // I want the <td>New insert</td> show up here. <tr> <td><input type="button" id="addMatch" name="addMatch" value="Add Match" </td> </tr>

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  • what is this internet explorer (javascript?) syntax error -2146827286?

    - by ben
    Hi everyone, So, I've been trying to troubleshoot this bug where some big percentage of windows users who are on my ajax (jquery) web app are not able to play. I haven't been able to reproduce it on my end with a windows 7 IE8 running in a parallels vm. The main problem seems to be in the javascript somewhere because what users are complaining about is an ajax button isn't working. They click it and nothing happens, so either the event isn't firing, or my ajax call is failing, and possibly the return from the ajax could be failing. After trying some ideas, a friend suggested I check out damnit! https://damnit.jupiterit.com/ which will catch exceptions in javascript and email them to you. This is a pretty awesome tool! So, now i have a little more data, but, am stuck. Basically it seems like the majority of the exceptions seem to be complaining about a syntax error. I will paste the samples below. message: Syntax error number: -2146827286 description: Syntax error Browser: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2; .NET CLR 1.0.3705; OfficeLiveConnector.1.3; OfficeLivePatch.0.0) What's interesting is that the syntax error is consistently occurring in browsers reporting MSIE 8.0 but with windows vista, xp, and below, so older OS with the latest IE. Does anyone know of this error? Could this possibly be some weird slow computer/slow internet connection thing where may be my javascript files aren't fully loaded before I call the functions. I am using the jquery $(document).ready() to wait before I setup anything.

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  • Syncronization Exception

    - by Kurru
    Hi I have two threads, one thread processes a queue and the other thread adds stuff into the queue. I want to put the queue processing thread to sleep when its finished processing the queue I want to have the 2nd thread tell it to wake up when it has added an item to the queue However these functions call System.Threading.SynchronizationLockException: Object synchronization method was called from an unsynchronized block of code on the Monitor.PulseAll(waiting); call, because I havent syncronized the function with the waiting object. [which I dont want to do, i want to be able to process while adding items to the queue]. How can I achieve this? Queue<object> items = new Queue<object>(); object waiting = new object(); 1st Thread public void ProcessQueue() { while (true) { if (items.Count == 0) Monitor.Wait(waiting); object real = null; lock(items) { object item = items.Dequeue(); real = item; } if(real == null) continue; .. bla bla bla } } 2nd Thread involves public void AddItem(object o) { ... bla bla bla lock(items) { items.Enqueue(o); } Monitor.PulseAll(waiting); }

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  • How to fill DataGridView from nested table oracle

    - by arkadiusz85
    I want to create my type: CREATE TYPE t_read AS OBJECT ( id_worker NUMBER(20), how_much NUMBER(5,2), adddate_r DATE, date_from DATE, date_to DATE ); I create a table of my type: CREATE TYPE t_tab_read AS TABLE OF t_read; Next step is create a table with my type: enter code hereCREATE TABLE Reading ( id_watermeter NUMBER(20) constraint Watermeter_fk1 references Watermeters(id_watermeter), read t_tab_read ) NESTED TABLE read STORE AS store_read ; Microsoft Visual Studio can not display this type in DataGridView. I use Oracle.Command: C# using Oracle.DataAccess; using Oracle.DataAccess.Client; private void button1_Click(object sender, EventArgs e) { try { //my working class to connect to database ConnectionClass.BeginConnection(); OracleDataAdapter tmp = new OracleDataAdapter(); tmp = ConnectionClass.ReadCommand(ReadClass.test()); DataSet dataset4 = new DataSet(); tmp.Fill(dataset4, "Read1"); dataGridView4.DataSource = dataset4.Tables["Read1"]; } catch (Exception o) { MessageBox.Show(o.Message); } public class ReadClass { public static OracleCommand test() { string sql = "select c.id_watermeter, a. from reading c , table (c.read) a where id_watermeter=1"; ConnectionClass.Command1= new OracleCommand(sql, ConnectionClass.Connection); ConnectionClass.Command1.CommandType = CommandType.Text; return ConnectionClass.Command1; } } I tray: string sql = "select r.id_watermeter, o.id_worker, o.how_much, o.adddate_r, o.date_from, o.date_to from reading r, table (r.read) o where r.id_watermeter=1" string sql = "select a.from reading c , Table (c.read) a where id_watermeter=1" string sql = "select a.id_worker, a.how_much, a.adddate_r, a.date_from, a.date_to from reading c , table (c.read) a where id_watermeter=1" string sql = "select c.id_watermeter, a. from reading c , table (c.read) a where id_watermeter=1" Error : Unsuported Oracle data type USERDEFINED encountered Sombady can help me how to fill DataGridView using data from nested table. I am using Oracle 10g XE

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  • How to handle ASP.NET application error that occurs on application start and transfer & display erro

    - by Soul_Master
    I know that ASP.NET MVC has error filter attribute to handle specified error type. However, this feature cannot catch any error that occurs when application start. Therefore, I need to add some code to “Application_Error” method for handling this error like the following code. public void Application_Error(object sender, EventArgs e) { // At this point we have information about the error var ctx = HttpContext.Current; var exception = ctx.Server.GetLastError(); var errorInfo = "<br>Offending URL: " + ctx.Request.Url + "<br>Source: " + exception.Source + "<br>Message: " + exception.Message + "<br>Stack trace: " + exception.StackTrace; ctx.Response.Write(errorInfo); Server.ClearError(); } Although, this code will works fine, when normal application error occurs like error that occurs in view page. Nevertheless, it does not work when error occurs on application starting because request and response objects are always null. Next, I try to solve this question by setting default redirect in custom errors like the following code. <customErrors mode="On" defaultRedirect="Scripts/ApplicationError.htm"></customErrors> Unfortunately, it does not work because when application receive redirected request, it try to start application again and it throw exception again. How do to solve this problem? Alternatively, Do you have other idea for handling this error. Thanks, PS. The main reason for creating this handler because I want to display error when application cannot connect to other service like database for caching data on application start.

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  • Parsing large delimited files with dynamic number of columns

    - by annelie
    Hi, What would be the best approach to parse a delimited file when the columns are unknown before parsing the file? The file format is Rightmove v3 (.blm), the structure looks like this: #HEADER# Version : 3 EOF : '^' EOR : '~' #DEFINITION# AGENT_REF^ADDRESS_1^POSTCODE1^MEDIA_IMAGE_00~ // can be any number of columns #DATA# agent1^the address^the postcode^an image~ agent2^the address^the postcode^^~ // the records have to have the same number of columns as specified in the definition, however they can be empty etc #END# The files can potentially be very large, the example file I have is 40Mb but they could be several hundred megabytes. Below is the code I had started on before I realised the columns were dynamic, I'm opening a filestream as I read that was the best way to handle large files. I'm not sure my idea of putting every record in a list then processing is any good though, don't know if that will work with such large files. List<string> recordList = new List<string>(); try { using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read)) { StreamReader file = new StreamReader(fs); string line; while ((line = file.ReadLine()) != null) { string[] records = line.Split('~'); foreach (string item in records) { if (item != String.Empty) { recordList.Add(item); } } } } } catch (FileNotFoundException ex) { Console.WriteLine(ex.Message); } foreach (string r in recordList) { Property property = new Property(); string[] fields = r.Split('^'); // can't do this as I don't know which field is the post code property.PostCode = fields[2]; // etc propertyList.Add(property); } Any ideas of how to do this better? It's C# 3.0 and .Net 3.5 if that helps. Thanks, Annelie

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  • issue in property file

    - by devuser
    I want to load the property file when tomcat is starting.so I'm using servletContextListener to do that and i can get values of property file to my web application. But i want to keep the same value after changing the property file once log into web application.But when i change the value of property file and log into system again it change the value to new one.I want to keep the same value that loaded when tomcat was starting.how can i implement this? My coding is as below import javax.servlet.*; import java.io.IOException; import java.util.Properties; import java.util.logging.Level; import java.util.logging.Logger; import java.io.*; import java.util.ResourceBundle; public final class sysProperties implements javax.servlet.ServletContextListener { private static Properties props = new Properties(); private static String file_name = "com/util/contact.properties"; public addSystemProperties() { } public void contextInitialized(ServletContextEvent servletContextEvent) { // Get the context ServletContext servletContext = servletContextEvent.getServletContext(); // Set a context attribute try { // props.load(servletContext.getResourceAsStream(file_name)); props.load(getClass().getClassLoader().getResourceAsStream(file_name)); System.out.println(" Application X is starting"); servletContext.setAttribute("h1",props.getProperty("home.h1")); servletContext.setAttribute("h2",props.getProperty("home.h2")); System.out.println("h1"+servletContext.getAttribute("h1")); System.out.println("h2"+ servletContext.getAttribute("h2")); ; } catch (Exception e) { System.out.println(" Error setting context attribute: " + e.getMessage()); } } public void contextDestroyed(ServletContextEvent servletContextEvent) { // Get the context ServletContext servletContext = servletContextEvent.getServletContext(); // Output the context variable we set earlier System.out.println(" Application X is shutting down"); System.out.println(" Value of h1 is: " + servletContext.getAttribute("h1")); System.out.println(" Value of h2 is: " + servletContext.getAttribute("h2")); // Clean up (not really necessary as the context is being destroyed, but let's be neat) servletContext.removeAttribute(props.getProperty("h1")); servletContext.removeAttribute(props.getProperty("h2")); } }

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  • C# BackgroundWorker skips DoWork and goes straight to RunWorkerCompleted

    - by mr_man
    I'm new with C# so go easy on me! So far - I have a console app that listens for client connections and replies to the client accordingly. I also have a WPF form with a button and a text box. The button launches some code to connect to the server as a BackgroundWorker, which then waits for a response before appending it to the end of the text box. This works great, once. Sometimes twice. But then it kept crashing - turns out that the DoWork block wasn't being called at all and it was going straight to RunWorkerCompleted. Of course, the .result is blank so trying to convert it to a string fails. Is this a rookie mistake? I have tried searching the internet for various ways of saying the above but haven't come across anything useful... This is the code so far: http://pastebin.com/ZQvCFqxN - there are so many debug outputs from me trying to figure out exactly what went wrong. This is the result of the debug outputs: http://pastebin.com/V412mppX Any help much appreciated. Thanks! EDIT: The relevant code post-fix (thanks to Patrick Quirk below) is: public void dorequest(string query) { request = new BackgroundWorker(); request.WorkerSupportsCancellation = true; request.WorkerReportsProgress = true; request.ProgressChanged += request_ProgressChanged; request.DoWork += request_DoWork; request.RunWorkerCompleted += request_RunWorkerCompleted; request.RunWorkerAsync(query); }

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  • I just don't get AudioFileReadPackets

    - by Eric Christensen
    I've tried to write the smallest chunk of code to narrow down a problem. It's now just a few lines and it doesn't work, which makes it pretty clear that I have a fundamental misunderstanding of how to use AudioFileReadPackets. I've read the docs and other examples online, and apparently I'm just not getting. Could you explain it to me? Here's what this block should do: I've previously opened a file. I want to read just one packet - the first one of the file - and then print it. But it crashes on the AudioFileReadPackets line: AudioFileID mAudioFile2; AudioFileOpenURL (audioFileURL, 0x01, 0, &mAudioFile2); UInt32 *audioData2 = (UInt32 *)malloc(sizeof(UInt32) * 1); AudioFileReadPackets(mAudioFile2, false, NULL, NULL, 0, (UInt32*)1, audioData2); NSLog(@"first packet:%i",audioData2[0]); (For clarity, I've stripped out all error handling.) It's the AFRP line that crashes out. (I understand that the third and fourth argument are useful, and in my "real" code, I use them, but they're not required, right? So NULL in this case should work, right?) So then what's going on? Any guidance would be much appreciated. Thanks.

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  • COM Exceptions in C#

    - by Yaron Naveh
    I am consuming a cpp COM object from c# code. My c# code looks like this: try { var res = myComServer.GetSomething(); } catch (Exception e) { } However the exception never contains any of the details I set in cpp, in particular my error message. In my cpp side I have followed several examples I have found on the web: ... ICreateErrorInfo *pcerrinfo; IErrorInfo *perrinfo; HRESULT hr; hr = CreateErrorInfo(&pcerrinfo); pcerrinfo->SetDescription(L"C++ Exception"); hr = pcerrinfo->QueryInterface(IID_IErrorInfo, (LPVOID FAR*) &perrinfo); if (SUCCEEDED(hr)) { SetErrorInfo(0, perrinfo); perrinfo->Release(); } pcerrinfo->Release(); return E_FAIL; // E_FAIL or other appropriate failure code ... Am I missing anything? Is there anything else that could affect this, like marshaling, the interop creation or attributes of the com server itself?

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