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• Using backport-android-bluetooth on Android 1.6

  - by newth

  Hi, I'm trying to write an application using Bluetooth on Android 1.6. Since it's not officially supported, I found the backport of android.bluetooth API ( http://code.google.com/p/backport-android-bluetooth ). But when I deploy the sample chat application (modified for backport) LogCat gives me the error below: My question is, how I can use backport-android-bluetooth on 1.6 and is there any working samples? Thanks! 11-30 14:03:19.890: ERROR/AndroidRuntime(1927): Uncaught handler: thread main exiting due to uncaught exception 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): java.lang.ExceptionInInitializerError 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at backport.android.bluetooth.BluetoothSocket.<init>(BluetoothSocket.java:69) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at backport.android.bluetooth.BluetoothServerSocket.<init>(BluetoothServerSocket.java:16) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at backport.android.bluetooth.BluetoothAdapter.listenUsingRfcommWithServiceRecord(BluetoothAdapter.java:513) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at com.example.bluetooth.BluetoothChatService$AcceptThread.<init>(BluetoothChatService.java:237) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at com.example.bluetooth.BluetoothChatService.start(BluetoothChatService.java:109) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at com.example.bluetooth.BluetoothChat.onResume(BluetoothChat.java:138) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1225) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.Activity.performResume(Activity.java:3559) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2838) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2866) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2420) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.os.Handler.dispatchMessage(Handler.java:99) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.os.Looper.loop(Looper.java:123) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.app.ActivityThread.main(ActivityThread.java:4203) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at java.lang.reflect.Method.invokeNative(Native Method) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at java.lang.reflect.Method.invoke(Method.java:521) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at dalvik.system.NativeStart.main(Native Method) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): Caused by: java.lang.UnsatisfiedLinkError: classInitNative 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.bluetooth.RfcommSocket.classInitNative(Native Method) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): at android.bluetooth.RfcommSocket.<clinit>(RfcommSocket.java:152) 11-30 14:03:19.906: ERROR/AndroidRuntime(1927): ... 21 more

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• Using DisplayTag library, I want to have the currently selected row have a unique custom class using

  - by Mary

  I have been trying to figure out how to highlight the selected row in a table. In my jsp I have jsp scriplet that can get access to the id of the row the displaytag library is creating. I want to compare it to the the id of the current row selected by the user ${currentNoteId}. Right now if the row id = 849 (hardcoded) the class "currentClass" is added to just that row of the table. I need to change the 849 for the {$currentNoteId} and I don't know how to do it. I am using java, Spring MVC. The jsp: ... <% request.setAttribute("dyndecorator", new org.displaytag.decorator.TableDecorator() { public String addRowClass() { edu.ilstu.ais.advisorApps.business.Note row = (edu.ilstu.ais.advisorApps.business.Note)getCurrentRowObject(); String rowId = row.getId(); if ( rowId.equals("849") ) { return "currentClass"; } return null; } }); %> <c:set var="currentNoteId" value="${studentNotes.currentNote.id}"/> ... <display:table id="noteTable" name="${ studentNotes.studentList }" pagesize="20" requestURI="notesView.form.html" decorator="dyndecorator"> <display:column title="Select" class="yui-button-match" href="/notesView.form.html" paramId="note.id" paramProperty="id"> <input type="button" class="yui-button-match2" name="select" value="Select"/> </display:column> <display:column property="userName" title="Created By" sortable="true"/> <display:column property="createDate" title="Created On" sortable="true" format="{0,date,MM/dd/yy hh:mm:ss a}"/> <display:column property="detail" title="Detail" sortable="true"/> </display:table> ... This could also get done using javascript and that might be best, but the documentation suggested this so I thought I would try it. I cannot find an example anywhere using the addRowClass() unless the comparison is to a field already in the row (a dollar amount is used in the documentation example) or hardcoded in like the "849" id. Thanks for any help you can provide.

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• How do you become a freelance developer?

  - by Dwayne

  I have been a developer for 10+ years now working for various companies; I have 5+ years of .NET and ASP.NET experience. What I want to do is break away and become my own boss. Ideally I want this to lead into owning my own company. Where do I start? Has anyone done this recently? Do you have any tips?

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• Bug with asp.net mvc2, collection and ValidationMessageFor ?

  - by Rafael Mueller

  I'm with a really weird bug with asp.net mvc2 (rtm) and ValidationMessageFor. The example below throws a System.Collections.Generic.KeyNotFoundException on Response.Write(Html.ValidationMessageFor(n = n[index].Name)); Any ideas why thats happening? I'm accessing the same dictionary twice before, but it only throws the error on ValidationMessageFor, any thoughts? Here's the code. public class Parent { public IList<Child> Childrens { get; set; } [Required] public string Name { get; set; } } public class Child { [Required] public string Name { get; set; } } The controller public class ParentController : Controller { public ActionResult Create() { var parent = new Parent { Name = "Parent" }; parent.Childrens = new List<Child> { new Child(), new Child(), new Child() }; return View(parent); } } The view (Create.aspx) <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Parent>" %> <%@ Import Namespace="BugAspNetMVC" %> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <%Html.EnableClientValidation(); %> <% using (Html.BeginForm()) {%> <%=Html.LabelFor(p => p.Name)%> <%=Html.TextBoxFor(p => p.Name)%> <%=Html.ValidationMessageFor(p => p.Name)%> <%Html.RenderPartial("Childrens", Model.Childrens); %> <%} %> </asp:Content> And the partial view (Childrens.ascx) <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<IList<Child>>" %> <%@ Import Namespace="BugAspNetMVC"%> <% for (int i = 0; i < Model.Count; i++) { var index = i; Response.Write(Html.LabelFor(n => n[index].Name)); Response.Write(Html.TextBoxFor(n => n[index].Name)); Response.Write(Html.ValidationMessageFor(n => n[index].Name)); } %>

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• How to filter the jqGrid data NOT using the built in search/filter box

  - by Jimbo

  I want users to be able to filter grid data without using the intrinsic search box. I have created two input fields for date (from and to) and now need to tell the grid to adopt this as its filter and then to request new data. Forging a server request for grid data (bypassing the grid) and setting the grid's data to be the response data wont work - because as soon as the user tries to re-order the results or change the page etc. the grid will request new data from the server using a blank filter. I cant seem to find grid API to achieve this - does anyone have any ideas? Thanks.

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• ASP.NET MVC:Why does the CheckBoxFor render an additional input tag and how can I get the value usin

  - by Nikron

  Hi, In my ASP.NET MVC app I am rendering out a checkbox using the following code: <%= Html.CheckBoxFor(i=>i.ReceiveRSVPNotifications) %> Now I see that this renders both the checkbox input tag and a hidden input tag. The problem that I am having is when I try retrieve the value from the checkbox using the FormCollection: FormValues["ReceiveRSVPNotifications"] I get the value "true,false". When looking at the rendered out HTML I can see the following: <input id="ReceiveRSVPNotifications" name="ReceiveRSVPNotifications" value="true" type="checkbox"> <input name="ReceiveRSVPNotifications" value="false" type="hidden"> So the FormValues collection seems to join these two values since they have the same name. Any Ideas?

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• Unable to launch the asp.net development server because port '80' is in use

  - by kevin

  I need to use port 80 for my development server. Before i restart pc, it's still working fine. After that, it pop up the port 80 is in use. The development server able to run if i changed to other port. I've checked using netstat -ano, no program is using it (my iis is using other port and my skype is not using port 80 as well). I also test with telnet localhost 80, it didnt show any failure message, just the screen goes blank...I'm using win xp. Is my visual studio has problem?

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• Sending emails - providers

  - by nrph

  I need to send emails from my social service (this is continuation of Experiences in mailing to registered users). I got strong feeling that it's better to avoid problems with email server configuration and maintance and to choose email provider which will take care of all painful problems. So several offers were compared: http://imgur.com/JkK2X.jpg Three of them look very attractive: Postageapp / Sendgrid / CritSend Which provider works for you and is worth choosing?

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• Ruby gem installation error after OSX Yosemite and Xcode 6 installation

  - by Andres Trevino

  I tried installing a gem like I did before installing Yosemite, but now I'm getting an error: /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:159:in `synchronize': ERROR: Failed to build gem native extension. (Gem::Ext::BuildError) ERROR: Failed to build gem native extension. deadlock; recursive locking This is the command I wrote: sudo gem install mysql2 This is the message it appears in the terminal: Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/autotest-fsevent-0.2.9 for inspection. Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-14/2.0.0/autotest-fsevent-0.2.9/gem_make.out Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/autotest-fsevent-0.2.9 for inspection. Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-14/2.0.0/autotest-fsevent-0.2.9/gem_make.out from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:159:in build_extension' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:198:inblock in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:in each' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:inbuild_extensions' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1436:in block in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/user_interaction.rb:45:inuse_ui' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1434:in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:60:inbuild_extensions' from /Library/Ruby/Site/2.0.0/rubygems/basic_specification.rb:56:in contains_requirable_file?' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:925:inblock in find_inactive_by_path' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:in each' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:infind' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:in find_inactive_by_path' from /Library/Ruby/Site/2.0.0/rubygems.rb:185:intry_activate' from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:132:in rescue in require' from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:144:inrequire' from /Library/Ruby/Site/2.0.0/rubygems.rb:601:in load_yaml' from /Library/Ruby/Site/2.0.0/rubygems/config_file.rb:328:inload_file' from /Library/Ruby/Site/2.0.0/rubygems/config_file.rb:197:in initialize' from /Library/Ruby/Site/2.0.0/rubygems.rb:289:innew' from /Library/Ruby/Site/2.0.0/rubygems.rb:289:in configuration' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:63:inrun' from /Library/Ruby/Site/2.0.0/rubygems/ext/ext_conf_builder.rb:38:in block in build' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tempfile.rb:324:inopen' from /Library/Ruby/Site/2.0.0/rubygems/ext/ext_conf_builder.rb:17:in build' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:161:inblock (2 levels) in build_extension' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:160:in chdir' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:160:inblock in build_extension' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:159:in synchronize' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:159:inbuild_extension' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:198:in block in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:ineach' from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1436:inblock in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/user_interaction.rb:45:in use_ui' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1434:inbuild_extensions' from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:60:in build_extensions' from /Library/Ruby/Site/2.0.0/rubygems/basic_specification.rb:56:incontains_requirable_file?' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:925:in block in find_inactive_by_path' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:ineach' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:in find' from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:infind_inactive_by_path' from /Library/Ruby/Site/2.0.0/rubygems.rb:185:in try_activate' from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:132:inrescue in require' from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:144:in require' from /Library/Ruby/Site/2.0.0/rubygems.rb:601:inload_yaml' from /Library/Ruby/Site/2.0.0/rubygems/config_file.rb:328:in load_file' from /Library/Ruby/Site/2.0.0/rubygems/config_file.rb:197:ininitialize' from /Library/Ruby/Site/2.0.0/rubygems/gem_runner.rb:74:in new' from /Library/Ruby/Site/2.0.0/rubygems/gem_runner.rb:74:indo_configuration' from /Library/Ruby/Site/2.0.0/rubygems/gem_runner.rb:39:in run' from /usr/bin/gem:21:in' I am using OSX 10.10 and Xcode 6 Beta. Do any of you guys have any idea as to what to do about this? Thanks in advance

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• Getting data from UITableView

  - by Tejaswi Yerukalapudi

  Hi, I have a few custom UITableViewCells - http://img11.imageshack.us/i/customfacilitiescell.png/ which are added to this UIViewController - http://img189.imageshack.us/i/facilitycontroller.png/ Now, on clicking a button in the controller, I'd like to get the on/off status of all the UISwitches in the controller. Thanks, Teja Edit: I've made a few edits, but I still can't figure out how to do this. My program structure currently - A CustomCell.xib that looks like this - http://img11.imageshack.us/i/customfacilitiescell.png/ A CustomCellController that a subclass of UITableViewCell that has the IBOutlets for the labels and switches from above. Now I have a UIViewController<UITableViewDataSource, UITableViewDelegate> (Say, Screen1Controller) which looks like - http://img189.imageshack.us/i/facilitycontroller.png/ The tableviewcell is being created like this - - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *Id= @"CustomFacilitiesCell"; CustomFacilitiesCellController *cell = (CustomFacilitiesCellController *)[tableView dequeueReusableCellWithIdentifier:Id]; if(cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomFacilitiesCell" owner:self options:nil]; for (id oneObject in nib) { if([oneObject isKindOfClass:[CustomFacilitiesCellController class]]) cell = (CustomFacilitiesCellController *) oneObject; } } NSUInteger row = [indexPath row]; CustomFacilitiesCellController *rowData = (CustomFacilitiesCellController *)[self.facilities objectAtIndex:row]; cell.facname.text = rowData.facname.text; cell.FacID.text = rowData.FacID.text; cell.facSwitch = [(CustomFacilitiesCellController *)rowData facSwitch]; UISwitch *temp = cell.facSwitch; [(UISwitch *)[cell facSwitch] addTarget:self action:@selector(facSwitchOptionChanged:) forControlEvents:UIControlEventValueChanged]; cell.facSwitch.on = NO; //cell.facSwitch.enabled = FALSE; cell.accessoryType = UITableViewCellAccessoryNone; return cell; } - (IBAction) facSwitchOptionChanged:(id) sender { int i=0; } In particular, my problem is that the facSwitchOptionChanged() isn't getting called. Thanks again for the help, Teja.

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• C# Windows Media Player - Repeat single song in a playlist

  - by Professor Mustard

  I have a PlayList loaded into my WMP instance, and I want it to loop just one song. Everything I've Googled up so far tells me to do this: private AxWindowsMediaPlayer wmp; wmp.settings.setMode("loop", true); However, this only seems to make the entire PlayList repeat. The behavior I want is that, if I enable "repeat" when song 5 in the PlayList is playing, then song 5 will keep automatically repeat when it finishes (instead of proceeding to song 6). Most car MP3 players already work this way; is there a nice native way to do this in my C# program, or will I have to devise a "hack" solution, like intercepting the event that fires when the next song is loaded?

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• WiX tricks and best practices

  - by Si

  We've been using WiX 3 for a while now, and despite the usual gripes about ease of use, it's going reasonably well. What I'm looking for is useful advice regarding: Setting up a WiX project (layout, references, file patterns) Integrating WiX into solutions, and build/release processes Configuring installers for new installations and upgrades Also interested in any good WiX hacks you'd like to share, thanks!

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• Java invalid stream header Problem

  - by David zsl

  Hi all, im writen a client-server app, and now i´m facing a problem that I dont know how to solve: This is the client: try { Socket socket = new Socket(ip, port); ObjectOutputStream ooos = new ObjectOutputStream(socket .getOutputStream()); SendMessage message = new SendMessage(); message.numDoc = value.numDoc; message.docFreq = value.docFreq; message.queryTerms = query; message.startIndex = startIndex; message.count = count; message.multiple = false; message.ips = null; message.ports = null; message.value = true; message.docFreq = value.docFreq; message.numDoc = value.numDoc; ooos.writeObject(message); ObjectInputStream ois = new ObjectInputStream(socket .getInputStream()); ComConstants mensajeRecibido; Object mensajeAux; String mensa = null; byte[] by = null; do { mensajeAux = ois.readObject(); if (mensajeAux instanceof ComConstants) { System.out.println("Thread by Thread has Search Results"); String test; ByteArrayOutputStream testo = new ByteArrayOutputStream(); mensajeRecibido = (ComConstants) mensajeAux; byte[] wag; testo.write( mensajeRecibido.fileContent, 0, mensajeRecibido.okBytes); wag = testo.toByteArray(); if (by == null) { by = wag; } else { int size = wag.length; System.arraycopy(wag, 0, by, 0, size); } } else { System.err.println("Mensaje no esperado " + mensajeAux.getClass().getName()); break; } } while (!mensajeRecibido.lastMessage); //ByteArrayInputStream bs = new ByteArrayInputStream(by.toByteArray()); // bytes es el byte[] ByteArrayInputStream bs = new ByteArrayInputStream(by); ObjectInputStream is = new ObjectInputStream(bs); QueryWithResult[] unObjetoSerializable = (QueryWithResult[])is.readObject(); is.close(); //AQUI TOCARIA METER EL QUICKSORT XmlConverter xce = new XmlConverter(unObjetoSerializable, startIndex, count); String serializedd = xce.runConverter(); tempFinal = serializedd; ois.close(); socket.close(); } catch (Exception e) { e.printStackTrace(); } i++; } And this is the sender: try { QueryWithResult[] outputLine; Operations op = new Operations(); boolean enviadoUltimo=false; ComConstants mensaje = new ComConstants(); mensaje.queryTerms = query; outputLine = op.processInput(query, value); //String c = new String(); //c = outputLine.toString(); //StringBuffer swa = sw.getBuffer(); ByteArrayOutputStream bs= new ByteArrayOutputStream(); ObjectOutputStream os = new ObjectOutputStream (bs); os.writeObject(outputLine); os.close(); byte[] mybytearray = bs.toByteArray(); ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(mybytearray); BufferedInputStream bis = new BufferedInputStream(byteArrayInputStream); int readed = bis.read(mensaje.fileContent,0,4000); while (readed > -1) { mensaje.okBytes = readed; if (readed < ComConstants.MAX_LENGTH) { mensaje.lastMessage = true; enviadoUltimo=true; } else mensaje.lastMessage = false; oos.writeObject(mensaje); if (mensaje.lastMessage) break; mensaje = new ComConstants(); mensaje.queryTerms = query; readed = bis.read(mensaje.fileContent); } if (enviadoUltimo==false) { mensaje.lastMessage=true; mensaje.okBytes=0; oos.writeObject(mensaje); } oos.close(); } catch (Exception e) { e.printStackTrace(); } } And this is the error log: Thread by Thread has Search Results java.io.StreamCorruptedException: invalid stream header: 20646520 at java.io.ObjectInputStream.readStreamHeader(Unknown Source) at java.io.ObjectInputStream.<init>(Unknown Source) at org.tockit.comunication.ServerThread.enviaFicheroMultiple(ServerThread.java:747) at org.tockit.comunication.ServerThread.run(ServerThread.java:129) at java.lang.Thread.run(Unknown Source) Where at org.tockit.comunication.ServerThread.enviaFicheroMultiple(ServerThread.java:747) is this line ObjectInputStream is = new ObjectInputStream(bs); on the 1st code just after while (!mensajeRecibido.lastMessage); Any ideas?

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• DirectShow - passing parameters to custom source push filter

  - by mkurek

  Hello, I'm working on a solution that will be used to receive video stream from remote hosts and to put various texts on the top of it. Currently it consists of custom DirectShow push filter (C++) which receives data from remote hosts using RTP protocol and tiny C# application that sets up the DirectShow graph and is used as a container for the video. I'm using DirectShowLib interop library. However, I'm not sure how to pass parameters from this C# app to my custom filter. What are possible ways to do it?

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• ConfirmButtonExtender using ModalPopupExtender fails in UpdatePanel after partial postback?

  - by Martin Emanuelsson

  Hello, We're trying to add a more fancy looking confirm messages than the regular JavaScript-confirm message to our delete-buttons in a list of comments on our site. To accomplish this we're trying to use the ConfirmButtonExtender together with a ModalPopupExtender. The comments are displayed using a ListView inside a UpdatePanel so that the paging of the ListView doesn't reload the entire page. Using the ConfirmButtonExtender works fine the first time the list is loaded but if we for instance go to the second page of comments using the pager, the ConfirmButtonExtender doesn't work anymore. The extender shows up when clicking Delete but when I click OK the page makes a full reload without triggering the delete event. Has anyone experienced the same problem and found a solution to it? Or can you recommend another way to accomplish the same thing? Best regards Martin Emanuelsson Göteborg, Sweden

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• WPF derived ComboBox SelectedValuePath issue

  - by opedog

  In our application we have a very large set of data that acts as our data dictionary for ComboBox lists, etc. This data is staticly cached and keyed off of 2 variables, so I thought it wise to write a control that derived from ComboBox and exposed the 2 keys as DPs. When those 2 keys have proper values I set the ItemsSource of the ComboBox automatically from the data dictionary list it corresponds to. I also automatically set the SelectedValuePath and DisplayMemberPath to Code and Description, respectively. Here's how an example of how an item in the ItemsSource from the data dictionary list always looks: public class DataDictionaryItem { public string Code { get; set; } public string Description { get; set; } public string Code3 { get { return this.Get.Substring(0, 3); } } } The value of Code is always 4 bytes long, but sometimes I only need to bind 3 bytes of it. Hence, the Code3 property. Here's how the code looks inside my custom combobox to set the ItemsSource: private static void SetItemsSource(CustomComboBox combo) { if (string.IsNullOrEmpty(combo.Key1) || string.IsNullOrEmpty(combo.Key2)) { combo.ItemsSource = null; return; } List<DataDictionaryItem> list = GetDataDictionaryList(combo.Key1, combo.Key2); combo.ItemsSource = list; } Now, my problem is, when I change the SelectedValuePath in the XAML to Code3, it doesn't work. What I bind to SelectedValue still gets the full 4 character Code from DataDictionaryItem. I even tried rerunning SetItemsSource when the SelectedValuePath was changed and no dice. Can anyone see what I need to do to get my custom combobox to wake up and use the SelectedValuePath provided if it's overridden in the XAML? Tweaking the value in the property setter in my SelectedValue bound business object is not an option.

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• Code Golf: Code 39 Bar Code

  - by gwell

  The challenge The shortest code by character count to draw an ASCII representation of a Code 39 bar code. Wikipedia article about Code 39: http://en.wikipedia.org/wiki/Code_39 Input The input will be a string of legal characters for Code 39 bar codes. This means 43 characters are valid: 0-9 A-Z (space) and -.$/+%. The * character will not appear in the input as it is used as the start and stop characters. Output Each character encoded in Code 39 bar codes have nine elements, five bars and four spaces. Bars will be represented with # characters, and spaces will be represented with the space character. Three of the nine elements will be wide. The narrow elements will be one character wide, and the wide elements will be three characters wide. A inter-character space of a single space should be added between each character pattern. The pattern should be repeated so that the height of the bar code is eight characters high. The start/stop character * (bWbwBwBwb) would be represented like this: # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # ^ ^ ^^ ^ ^ ^ ^^^ | | || | | | ||| narrow bar -+ | || | | | ||| wide space ---+ || | | | ||| narrow bar -----+| | | | ||| narrow space ------+ | | | ||| wide bar --------+ | | ||| narrow space ----------+ | ||| wide bar ------------+ ||| narrow space --------------+|| narrow bar ---------------+| inter-character space ----------------+ The start and stop character * will need to be output at the start and end of the bar code. No quiet space will need to be included before or after the bar code. No check digit will need to be calculated. Full ASCII Code39 encoding is not required, just the standard 43 characters. No text needs to be printed below the ASCII bar code representation to identify the output contents. The character # can be replaced with another character of higher density if wanted. Using the full block character U+2588, would allow the bar code to actually scan when printed. Test cases Input: ABC Output: # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # Input: 1/3 Output: # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # Input: - $ (minus space dollar) Output: # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # Code count includes input/output (full program).

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• Best way to programmatically detect iPad/iPhone hardware

  - by Adam Eberbach

  The reason I need to find out is that on an iPad, a UIPickerView has the same height in landscape orientation as it does in portrait. On an iPhone it is different. The iPad programming guide introduces an "idiom" value to UIDevice: UIDevice* thisDevice = [UIDevice currentDevice]; if(thisDevice.userInterfaceIdiom == UIUserInterfaceIdiomPad) { // iPad } else { // iPhone } which works OK while you're in iPad (3.2) but not iPhone (3.1.3) - so it looks like there also needs to be an ifdef to conditionally compile that check, like: #if __IPHONE_OS_VERSION_MIN_REQUIRED >= 30200 UIDevice* thisDevice = [UIDevice currentDevice]; if(thisDevice.userInterfaceIdiom == UIUserInterfaceIdiomPad) { // etc. } #endif To me that's starting to look very clumsy. What's a better way?

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• Configuring multiple distinct WCF binding configurations causes an exception to be thrown

  - by Sandor Drieënhuizen

  I have a set of IIS7-hosted net.tcp WCF services that serve my ASP.NET MVC web application. The web application is accessed over the internet. WCF Services (IIS7) <--> ASP.NET MVC Application <--> Client Browser The services are username authenticated, the account that a client (of my web application) uses to logon ends up as the current principal on the host. I want one of the services to be authenticated differently, because it serves the view model for my logon view. When it's called, the client is obviously not logged on yet. I figure Windows authentication serves best or perhaps just certificate based security (which in fact I should use for the authenticated services as well) if the services are hosted on a machine that is not in the same domain as the web application. That's not the point here though. Using multiple TCP bindings is what's giving me trouble. I tried setting it up like this: <bindings> <netTcpBinding> <binding> <security mode="TransportWithMessageCredential"> <message clientCredentialType="UserName"/> </security> </binding> <binding name="public"> <security mode="Transport"> <message clientCredentialType="Windows"/> </security> </binding> </netTcpBinding> </bindings> The thing is that both bindings don't seem to want live together in my host. When I remove either of them, all's fine but together they produce the following exception on the client: The requested upgrade is not supported by 'net.tcp://localhost:8081/Service2.svc'. This could be due to mismatched bindings (for example security enabled on the client and not on the server). In the server trace log, I find the following exception: Protocol Type application/negotiate was sent to a service that does not support that type of upgrade. Am I looking into the right direction or is there a better way to solve this?

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• Error : java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.<init>(I)V

  - by Hitesh Solanki

  Hiii.... I am developing small spring application. I have to store the details of the student information in the database. I have develop one simpleformcontroller.I have used netbeans + hibernate mapping + spring. when I deploy the project,the following errors is occured. please help me.. Thanks in advance..... My spring-config-db-applicationContext.xml is shown below: <?xml version="1.0" encoding="UTF-8"?> ${driverClassName} ${url} ${username} ${password} WEB-INF/classes/hibernate.cfg.xml -- hibernate.cfg.xml org.hibernate.cfg.AnnotationConfiguration -- <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${dialect}</prop> <prop key="hibernate.show_sql">true</prop> <!--<prop key="hibernate.hbm2ddl.auto">create</prop>--> </props> </property> </bean> Following error is occured: ERROR (org.springframework.web.context.ContextLoader:213) - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in URL [jndi:/localhost/Student/WEB-INF/classes/config/spring-db-applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.(I)V at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1395) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:289) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:286) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:188) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:526) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:730) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:387) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:270) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:627) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:511) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1231) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1471) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:824) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:350) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:196) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.(I)V at net.sf.cglib.core.DebuggingClassWriter.(DebuggingClassWriter.java:47) at net.sf.cglib.core.DefaultGeneratorStrategy.getClassWriter(DefaultGeneratorStrategy.java:30) at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:24) at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) at net.sf.cglib.proxy.Enhancer.(Enhancer.java:69) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:117) at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:162) at org.hibernate.tuple.entity.AbstractEntityTuplizer.(AbstractEntityTuplizer.java:135) at org.hibernate.tuple.entity.PojoEntityTuplizer.(PojoEntityTuplizer.java:55) at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.(EntityEntityModeToTuplizerMapping.java:56) at org.hibernate.tuple.entity.EntityMetamodel.(EntityMetamodel.java:302) at org.hibernate.persister.entity.AbstractEntityPersister.(AbstractEntityPersister.java:434) at org.hibernate.persister.entity.SingleTableEntityPersister.(SingleTableEntityPersister.java:108) at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61) at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:238) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1304) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:813) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:731) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1454) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1392) ... 48 more Mar 12, 2010 5:32:28 PM org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart

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• how do I register a custom conversion Service in spring 3 / webflow 2?

  - by nont

  I've been trying to follow this example and using the reference to guide me, but I'm having no luck. I've defined a converter: import org.springframework.binding.convert.converters.StringToObject; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.text.ParseException; import java.util.Date; public class StringToDateTwoWayConverter extends StringToObject { private DateFormat format = null; public StringToDateTwoWayConverter () { super(StringToDateTwoWayConverter.class); format = new SimpleDateFormat("MM/dd/yyyy"); } @Override protected Object toObject(String string, Class targetClass) throws Exception { Date date = null; try { date = format.parse(string); } catch (ParseException e) { e.printStackTrace(); return null; } return date; } @Override protected String toString(Object object) throws Exception { Date date = (Date) object; return format.format(date); } } and a conversionService: import org.springframework.binding.convert.service.DefaultConversionService; import org.springframework.stereotype.Component; @Component("conversionService") public class ApplicationConversionService extends DefaultConversionService { @Override protected void addDefaultConverters() { super.addDefaultConverters(); this.addConverter(new StringToDateTwoWayConverter()); this.addConverter("shortDate", new StringToDateTwoWayConverter()); } } and configured it: <webflow:flow-builder-services id="flowBuilderServices" conversion-service="conversionService" .../> However, upon startup, I'm greeted with this exception: Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name '(inner bean)': Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.core.convert.ConversionService]: Could not convert constructor argument value of type [com.yadayada.converter.ApplicationConversionService] to required type [org.springframework.core.convert.ConversionService]: Failed to convert value of type 'com.yadayada.converter.ApplicationConversionService' to required type 'org.springframework.core.convert.ConversionService'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [com.yadayada.converter.ApplicationConversionService] to required type [org.springframework.core.convert.ConversionService]: no matching editors or conversion strategy found at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:687) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:195) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:993) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:897) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:270) ... 60 more I'm thoroughly puzzled why its not working. The conversion service implements ConversionService through its base class, so I don't see the problem. Any insight much appreciated!

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• Excel workbook event order and usage when closing Excel

  - by mas_oz2k1

  Given the following workbook events: BeforeClose BeforeSave Please tell me: - The firing order in the case of multiple workbooks alreay opened (wb1, wb2 and wb3 are opened in this order) and the user closes Excel. You can assume all 3 needs saving. - What happen if user cancels one of the saving operations say wb2? Note: Please provide link or sample .net code of event usage. ( I have the msdn event definition links already no need to post t them again)

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• jquery nested sortable list

  - by Y.G.J

  i have this code $(document).ready(function() { $("#test-list").sortable({ items: "> li", handle : '.handle', axis: 'y', opacity: 0.6, update : function () { var order = $('#test-list').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); $("#test-sub").sortable({ containment: "ul", items: "li", handle : '.handle', axis: 'y', opacity: 0.6, update : function () { var order = $('#test-list').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); }); for this kind of UL <ul id="test-list"> <li></li> <li> <ul id="test-sub"> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> </ul> </li> <li></li> <li></li> <li></li> <li></li> </ul> but it can be changed dynamiclly... when i drag and drop the main li it is working when i do it with the childs it will drag the main one what is wrong?

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• sharp architecture, FluentNHibernate, automapper, DTO, 1:m persistence question

  - by csetzkorn

  Let us say we have a class A which has a reference to another class B (1:m) public class A { public virtual B B { get; set; } } I reflect this using FluentNHibernate within the sharp architecture and also manage to ‘initialise’ A and its B via a DTO and Automapper. The DTO contain A’s values and B (just B’s id value/A’s foreign key initialised). I was hoping that I can persist A by ‘just’ using its 'out of the box repository' without requiring B’s repository using: SaveOrUpdate(A); (A has been mapped using AutoMapper and contains B with its Id initialised) Was my assumption too naive? Can I achieve this somehow (without ever requiring B’s repository)? Or do I have to use A’s and B’s repository in, for example, the controller or some other service layer? Thanks. Best wishes, Christian

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• Using Aggregate functions in DataView filters

  - by Shrewd Demon

  hi, i have a DataTable that has a column ("Profit"). What i want is to get the Sum of all the values in this table. I tried to do this in the following manner... DataTable dsTemp = new DataTable(); dsTemp.Columns.Add("Profit"); DataRow dr = null; dr = dsTemp.NewRow(); dr["Profit"] = 100; dsTemp.Rows.Add(dr); dr = dsTemp.NewRow(); dr["Profit"] = 200; dsTemp.Rows.Add(dr); DataView dvTotal = dsTemp.DefaultView; dvTotal.RowFilter = " SUM ( Profit ) "; DataTable dt = dvTotal.ToTable(); But i get an error while applying the filter... how can i get the Sum of the Profit column in a variable thank you...

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