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  • IPhone SDK 4 background process for incoming call

    - by shaimagz
    I would like to track (run some code - or invoke function) when the user get an incoming call. for example: for every call the user receive I want to save the number, and check something during or before the call is answered (with a background process..) until now without the background processing I couldn't find a way to do this. But I'm still not sure it is possible. I'll be grate full if anyone with information about the new sdk 4 or a good idea to solve it can help me please. Thanks. Shai.

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  • Which programming language is manageable by an 11 year old kid?

    - by tangens
    Possible Duplicates: What is the easiest language to start with? What are some recommended programming resources for pre-teens? My son is 11 years old and he would like to learn a programming language. Of course his primary goal is to develop some (simple) games. Do you know of a programming language that is suitable for this situation? Summary of languages recommended in the answers Snake Wrangling for Kids (answer) Scratch (answer) Small Basic (answer) (answer) Logo NXT-G for Lego Mindstorms (answer) Alice (answer) BlueJ (answer) Squeak Smalltalk (answer) (answer) (answer) Blender Game Engine (answer) PyGame (answer) (answer) (answer) Inform (answer) Phrogram (answer) Dr Scheme (answer) eToys (answer) runrev (answer) Karel Programming (answer) Hackety Hack (answer) Visual Basic (answer) (answer) Learn to Program (answer) QBasic (answer) (answer) Visual Basic Express (answer) Processing (answer) C# (answer) JavaScript (answer) (answer) Ruby (answer) ToonTalk (answer) Flash and ActionScript (answer) StarLogo (answer) Java (answer) Kodu (answer) XNA (answer) (answer) unity3D (answer) BlitzBasic (answer)(answer) Lua (answer)

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  • asp.net connection reset with long running process

    - by Ronnie Overby
    In an asp.net web form, I keep getting a connection reset error message. The page is doing a some long running processing (about 2-5 minutes). I have no problem when the web request comes from the same machine as the web server. But when the request originates across the network, I get a connection reset error about 1:30 or 2 minutes into waiting for a response. I have set the in web.config for this application and put the application it's own application pool. What else can I try?

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  • Unable to open word file (MSWord 2007) when word automation program is running

    - by sankaran
    In my application i am using word automation to get the text content from the file. It is working fine no issues. But at the instant when word automation is processing, if i open the word file, it is throwing a dialog with message (any file) "This file is in use by another application or user. (C:\User\xyz\AppData...\Normal.dotm)". When close the dialog, it asking for save the file "normal.dotm"...template file. This happens only in MSWord 2007 not in MSWord 2003. can any one tell the solution please.

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  • rails paperclip and passenger `is not recognized by the 'identify' command`

    - by Joseph Silvashy
    When I upload a photo, my model fails validation, err well even without any validations I'm returned this error: /tmp/stream20100103-13830-ywmerx-0 is not recognized by the 'identify' command. and /tmp/stream20100103-13830-ywmerx-0 is not recognized by the 'identify' command. I'm confident this is not related to ImageMagick because I've removed any image processing from the uploading, also I've tried uploading different mime types, like .txt files and the such. Additionally, I found something that may work. A blog post claims that putting the following in my environment (in this case development.rb) Paperclip.options[:command_path] = "/opt/local/bin"

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  • Do WPF ComboBox SelectedIndex and SelectedValue have different behavior on SelectionChanged event?

    - by Junior Mayhé
    Hello guys I got this cbxJobPosition_SelectionChanged firing as expected. The problem is when a external method tries to set cbxJobPosition. cbxJobPosition is databinded with a list of objects of type JobPosition: JobPositionID: 1, JobPositionName: Manager JobPositionID: 2, JobPositionName: Employee JobPositionID: 3, JobPositionName: Third party Here's the XAML: <ComboBox Cursor="Hand" DataContext="{Binding}" ItemsSource="{Binding}" FontSize="13" Name="cbxJobPosition" SelectedValuePath="JobPositionID" DisplayMemberPath="JobPositionName" SelectedIndex="0" Width="233" Height="23" SelectionChanged="cbxJobPosition_SelectionChanged" /> On UserControl_Loaded method, it reads from database the list of jobs and try to set the specific job position "Third party": //calls cbxJobPosition_SelectionChanged and passes the correct SelectedValue within cbxJobPosition.SelectedIndex = 3; //calls cbxJobPosition_SelectionChanged and but won't pass the correct SelectedValue within cbxJobPosition.SelectedValue = "3"; As you can notice, when the processing is automatically redirected to cbxJobPosition_SelectionChanged, the SelectedValue attribute will have different values for each statement above when you're debugging within cbxJobPosition_SelectionChanged event. Does anyone know if this difference is expected, am I missing something or it could be a bug?

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  • How do I install LFE on Ubuntu Karmic?

    - by karlthorwald
    Erlang was already installed: $dpkg -l|grep erlang ii erlang 1:13.b.3-dfsg-2ubuntu2 Concurrent, real-time, distributed function ii erlang-appmon 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP application monitor ii erlang-asn1 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP modules for ASN.1 support ii erlang-base 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP virtual machine and base applica ii erlang-common-test 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP application for automated testin ii erlang-debugger 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP application for debugging and te ii erlang-dev 1:13.b.3-dfsg-2ubuntu2 Erlang/OTP development libraries and header [... many more] Erlang seems to work: $ erl Erlang R13B03 (erts-5.7.4) [source] [64-bit] [smp:2:2] [rq:2] [async-threads:0] [hipe] [kernel-poll:false] Eshell V5.7.4 (abort with ^G) 1> I downloaded lfe from github and checked out 0.5.2: git clone http://github.com/rvirding/lfe.git cd lfe git checkout -b local0.5.2 e207eb2cad $ configure configure: command not found $ make mkdir -p ebin erlc -I include -o ebin -W0 -Ddebug +debug_info src/*.erl #erl -I -pa ebin -noshell -eval -noshell -run edoc file src/leex.erl -run init stop #erl -I -pa ebin -noshell -eval -noshell -run edoc_run application "'Leex'" '"."' '[no_packages]' #mv src/*.html doc/ Must be something stupid i missed :o $ sudo make install make: *** No rule to make target `install'. Stop. $ erl -noshell -noinput -s lfe_boot start {"init terminating in do_boot",{undef,[{lfe_boot,start,[]},{init,start_it,1},{init,start_em,1}]}} Crash dump was written to: erl_crash.dump init terminating in do_boot () Is there an example how I would create a hello world source file and compile and run it?

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  • Linq To SQL - Specified cast is not valid - SingleOrDefault()

    - by NullReference
    I am trying to do the following... Request request = (from r in db.Requests where r.Status == "Processing" && r.Locked == false select r).SingleOrDefault(); It is throwing the following exception... Message: Specified cast is not valid. StackTrace: at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) at System.Data.Linq.DataQuery1.System.Linq.IQueryProvider.Execute[S](Expression expression) at System.Linq.Queryable.SingleOrDefault[TSource](IQueryable1 source) at GDRequestProcessor.Worker.GetNextRequest() Can anyone help me? Thanks in advance!

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  • threaded serial port IOException when writing

    - by John McDonald
    Hi, I'm trying to write a small application that simply reads data from a socket, extracts some information (two integers) from the data and sends the extracted information off on a serial port. The idea is that it should start and just keep going. In short, it works, but not for long. After a consistently short period I start to receive IOExceptions and socket receive buffer is swamped. The thread framework has been taken from the MSDN serial port example. The delay in send(), readThread.Join(), is an effort to delay read() in order to allow serial port interrupt processing a chance to occur, but I think I've misinterpreted the join function. I either need to sync the processes more effectively or throw some data away as it comes in off the socket, which would be fine. The integer data is controlling a pan tilt unit and I'm sure four times a second would be acceptable, but not sure on how to best acheive either, any ideas would be greatly appreciated, cheers. using System; using System.Collections.Generic; using System.Text; using System.IO.Ports; using System.Threading; using System.Net; using System.Net.Sockets; using System.IO; namespace ConsoleApplication1 { class Program { static bool _continue; static SerialPort _serialPort; static Thread readThread; static Thread sendThread; static String sendString; static Socket s; static int byteCount; static Byte[] bytesReceived; // synchronise send and receive threads static bool dataReceived; const int FIONREAD = 0x4004667F; static void Main(string[] args) { dataReceived = false; readThread = new Thread(Read); sendThread = new Thread(Send); bytesReceived = new Byte[16384]; // Create a new SerialPort object with default settings. _serialPort = new SerialPort("COM4", 38400, Parity.None, 8, StopBits.One); // Set the read/write timeouts _serialPort.WriteTimeout = 500; _serialPort.Open(); string moveMode = "CV "; _serialPort.WriteLine(moveMode); s = null; IPHostEntry hostEntry = Dns.GetHostEntry("localhost"); foreach (IPAddress address in hostEntry.AddressList) { IPEndPoint ipe = new IPEndPoint(address, 10001); Socket tempSocket = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp); tempSocket.Connect(ipe); if (tempSocket.Connected) { s = tempSocket; s.ReceiveBufferSize = 16384; break; } else { continue; } } readThread.Start(); sendThread.Start(); while (_continue) { Thread.Sleep(10); ;// Console.WriteLine("main..."); } readThread.Join(); _serialPort.Close(); s.Close(); } public static void Read() { while (_continue) { try { //Console.WriteLine("Read"); if (!dataReceived) { byte[] outValue = BitConverter.GetBytes(0); // Check how many bytes have been received. s.IOControl(FIONREAD, null, outValue); uint bytesAvailable = BitConverter.ToUInt32(outValue, 0); if (bytesAvailable > 0) { Console.WriteLine("Read thread..." + bytesAvailable); byteCount = s.Receive(bytesReceived); string str = Encoding.ASCII.GetString(bytesReceived); //str = Encoding::UTF8->GetString( bytesReceived ); string[] split = str.Split(new Char[] { '\t', '\r', '\n' }); string filteredX = (split.GetValue(7)).ToString(); string filteredY = (split.GetValue(8)).ToString(); string[] AzSplit = filteredX.Split(new Char[] { '.' }); filteredX = (AzSplit.GetValue(0)).ToString(); string[] ElSplit = filteredY.Split(new Char[] { '.' }); filteredY = (ElSplit.GetValue(0)).ToString(); // scale values int x = (int)(Convert.ToInt32(filteredX) * 1.9); string scaledAz = x.ToString(); int y = (int)(Convert.ToInt32(filteredY) * 1.9); string scaledEl = y.ToString(); String moveAz = "PS" + scaledAz + " "; String moveEl = "TS" + scaledEl + " "; sendString = moveAz + moveEl; dataReceived = true; } } } catch (TimeoutException) {Console.WriteLine("timeout exception");} catch (NullReferenceException) {Console.WriteLine("Read NULL reference exception");} } } public static void Send() { while (_continue) { try { if (dataReceived) { // sleep Read() thread to allow serial port interrupt processing readThread.Join(100); // send command to PTU dataReceived = false; Console.WriteLine(sendString); _serialPort.WriteLine(sendString); } } catch (TimeoutException) { Console.WriteLine("Timeout exception"); } catch (IOException) { Console.WriteLine("IOException exception"); } catch (NullReferenceException) { Console.WriteLine("Send NULL reference exception"); } } } } }

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  • Open payment gateway libraries for Java, Python, Ruby, and PHP

    - by Tauren
    I'm looking for generic and open source payment libraries that support many different payment processor APIs. In other words, I'd like to develop an application using a single payment processing API, but be able to easily switch between payment gateways, such as Authorize.Net, Payflow Pro, Braintree, PayPal, Google, Amazon, etc. This question gives some Java solutions, but the suggestions all look horrible. Isn't there anything more like ActiveMerchant for Java? I really need a good Java solution, to the point of building my own if necessary. But I don't want to reinvent the wheel if it exists. Are there any solutions for Python or PHP? Ideally, I'd like to find something similar to Ruby's ActiveMerchant, which looks exceptionally complete. Are there any other Ruby solutions?

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  • Logging IP address for uniqueness without storing the IP address itself for privacy

    - by szabgab
    In a web application when logging some data I'd like to make sure I can identify data that came at differetn times but from the same IP address. On the other hand for privacy concerns as the data will be released publicly I'd like to make sure the actual IP cannot be retrieved. So I need some one way mapping of the IP addresses to some other strings that ensures 1-1 mapping. If I understand correctly then MD5, SHA1 or SHA256 could be a solution. I wonder if they are not too expensive in terms of processing needed? I'd be interested in any solution though if there is implementation in Perl that would be even better.

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  • Issues using a Fedex Webservice via WDSL/SOAP

    - by Parris
    Hi Everyone, I downloaded the sample code to request a rate from fedex's website... i placed the WSDL file in the proper location, I have my acct number, password, meter number, and key. When I run the script I get this error: Error in processing transaction. ERROR prof 1000 Authentication Failed The script they give is as follows, and yes i do actually replace the XXX and YYY everywhere it says.: <?php // Copyright 2009, FedEx Corporation. All rights reserved. // Version 7.0.0 require_once('fedex-common.php5'); $newline = "<br />"; //The WSDL is not included with the sample code. //Please include and reference in $path_to_wsdl variable. $path_to_wsdl = "RateService_v7.wsdl"; ini_set("soap.wsdl_cache_enabled", "0"); $client = new SoapClient($path_to_wsdl, array('trace' => 1)); // Refer to http://us3.php.net/manual/en/ref.soap.php for more information $request['WebAuthenticationDetail'] = array('UserCredential' => array('Key' => 'XXX', 'Password' => 'YYY')); // Replace 'XXX' and 'YYY' with FedEx provided credentials $request['ClientDetail'] = array('AccountNumber' => 'XXX', 'MeterNumber' => 'YYY');// Replace 'XXX' with your account and meter number $request['TransactionDetail'] = array('CustomerTransactionId' => ' *** Rate Request v7 using PHP ***'); $request['Version'] = array('ServiceId' => 'crs', 'Major' => '7', 'Intermediate' => '0', 'Minor' => '0'); $request['ReturnTransitAndCommit'] = true; $request['RequestedShipment']['DropoffType'] = 'REGULAR_PICKUP'; // valid values REGULAR_PICKUP, REQUEST_COURIER, ... $request['RequestedShipment']['ShipTimestamp'] = date('c'); $request['RequestedShipment']['ServiceType'] = 'FEDEX_GROUND'; // valid values STANDARD_OVERNIGHT, PRIORITY_OVERNIGHT, FEDEX_GROUND, ... $request['RequestedShipment']['PackagingType'] = 'YOUR_PACKAGING'; // valid values FEDEX_BOX, FEDEX_PAK, FEDEX_TUBE, YOUR_PACKAGING, ... $request['RequestedShipment']['Shipper'] = array('Address' => array( 'StreetLines' => array('10 Fed Ex Pkwy'), // Origin details 'City' => 'Memphis', 'StateOrProvinceCode' => 'TN', 'PostalCode' => '38115', 'CountryCode' => 'US')); $request['RequestedShipment']['Recipient'] = array('Address' => array ( 'StreetLines' => array('13450 Farmcrest Ct'), // Destination details 'City' => 'Herndon', 'StateOrProvinceCode' => 'VA', 'PostalCode' => '20171', 'CountryCode' => 'US')); $request['RequestedShipment']['ShippingChargesPayment'] = array('PaymentType' => 'SENDER', 'Payor' => array('AccountNumber' => 'XXX', // Replace 'XXX' with payor's account number 'CountryCode' => 'US')); $request['RequestedShipment']['RateRequestTypes'] = 'ACCOUNT'; $request['RequestedShipment']['RateRequestTypes'] = 'LIST'; $request['RequestedShipment']['PackageCount'] = '2'; $request['RequestedShipment']['PackageDetailSpecified'] = true; $request['RequestedShipment']['PackageDetail'] = 'INDIVIDUAL_PACKAGES'; // Or PACKAGE_SUMMARY $request['RequestedShipment']['RequestedPackageLineItems'] = array('0' => array('Weight' => array('Value' => 2.0, 'Units' => 'LB'), 'Dimensions' => array('Length' => 10, 'Width' => 10, 'Height' => 3, 'Units' => 'IN')), '1' => array('Weight' => array('Value' => 5.0, 'Units' => 'LB'), 'Dimensions' => array('Length' => 20, 'Width' => 20, 'Height' => 10, 'Units' => 'IN'))); try { $response = $client ->getRates($request); if ($response -> HighestSeverity != 'FAILURE' && $response -> HighestSeverity != 'ERROR') { printRequestResponse($client); } else { echo 'Error in processing transaction.'. $newline. $newline; foreach ($response -> Notifications as $notification) { if(is_array($response -> Notifications)) { echo $notification -> Severity; echo ': '; echo $notification -> Message . $newline; } else { echo $notification . $newline; } } } writeToLog($client); // Write to log file } catch (SoapFault $exception) { printFault($exception, $client); } ?> I am not quite sure why it isn't working, i've read about using a proxy, but I am not quite sure how i would use it in this case? Isn't the point of using SOAP and WSDL to avoid using CURL, Direct Connect type stuff?

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  • Can't install psycopg2 (Python2.6 Ubuntu9.10 PostgreSQL8.4.2)

    - by yuv
    $ ~/psycopg2-2.0.13$ python setup.py install running install running build running build_py creating build creating build/lib.linux-x86_64-2.6 creating build/lib.linux-x86_64-2.6/psycopg2 copying lib/init.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/pool.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/extensions.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/errorcodes.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/extras.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/tz.py - build/lib.linux-x86_64-2.6/psycopg2 copying lib/psycopg1.py - build/lib.linux-x86_64-2.6/psycopg2 running build_ext error: No such file or directory or $ sudo easy_install psycopg2==2.0.13 Searching for psycopg2==2.0.13 Reading http;//pypi.python.org/simple/psycopg2/ Reading http;//initd.org/projects/psycopg2 Reading http;//initd.org/pub/software/psycopg/ Best match: psycopg2 2.0.13 Downloading http;//initd.org/pub/software/psycopg/psycopg2-2.0.13.tar.gz Processing psycopg2-2.0.13.tar.gz Running psycopg2-2.0.13/setup.py -q bdist_egg --dist-dir /tmp/easy_install-QuViWt/psycopg2-2.0.13/egg-dist-tmp-P2W9Dh error: Setup script exited with error: No such file or directory thanks in advance

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  • In Java Concurrency In Practice by Brian Goetz, why is the Memoizer class not annotated with @ThreadSafe?

    - by dig_dug
    Java Concurrency In Practice by Brian Goetz provides an example of a efficient scalable cache for concurrent use. The final version of the example showing the implementation for class Memoizer (pg 108) shows such a cache. I am wondering why the class is not annotated with @ThreadSafe? The client, class Factorizer, of the cache is properly annotated with @ThreadSafe. The appendix states that if a class is not annotated with either @ThreadSafe or @Immutable that it should be assumed that it isn't thread safe. Memoizer seems thread-safe though. Here is the code for Memoizer: public class Memoizer<A, V> implements Computable<A, V> { private final ConcurrentMap<A, Future<V>> cache = new ConcurrentHashMap<A, Future<V>>(); private final Computable<A, V> c; public Memoizer(Computable<A, V> c) { this.c = c; } public V compute(final A arg) throws InterruptedException { while (true) { Future<V> f = cache.get(arg); if (f == null) { Callable<V> eval = new Callable<V>() { public V call() throws InterruptedException { return c.compute(arg); } }; FutureTask<V> ft = new FutureTask<V>(eval); f = cache.putIfAbsent(arg, ft); if (f == null) { f = ft; ft.run(); } } try { return f.get(); } catch (CancellationException e) { cache.remove(arg, f); } catch (ExecutionException e) { throw launderThrowable(e.getCause()); } } } }

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  • JQuery Validation Plugin: Use Custom Ajax Method

    - by namtax
    Hi Looking for some assistance with the Jquery form validation plugin if possible. I am validating the email field of my form on blur by making an ajax call to my database, which checks if the text in the email field is currently in the database. // Check email validity on Blur $('#sEmail').blur(function(){ // Grab Email From Form var itemValue = $('#sEmail').val(); // Serialise data for ajax processing var emailData = { sEmail: itemValue } // Do Ajax Call $.getJSON('http://localhost:8501/ems/trunk/www/cfcs/admin_user_service.cfc?method=getAdminUserEmail&returnFormat=json&queryformat=column', emailData, function(data){ if (data != false) { var errorMessage = 'This email address has already been registered'; } else { var errorMessage = 'Good' } }) }); What I would like to do, is encorporate this call into the rules of my JQuery Validation Plugin...e.g $("#setAdminUser").validate({ rules:{ sEmail: { required: function(){ // Replicate my on blur ajax email call here } }, messages:{ sEmail: { required: "this email already exists" } }); Wondering if there is anyway of achieving this? Many thanks

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  • Text mining with PHP

    - by garyc40
    Hi, I'm doing a project for a college class I'm taking. I'm using PHP to build a simple web app that classify tweets as "positive" (or happy) and "negative" (or sad) based on a set of dictionaries. The algorithm I'm thinking of right now is Naive Bayes classifier or decision tree. However, I can't find any PHP library that helps me do some serious language processing. Python has NLTK (http://www.nltk.org). Is there anything like that for PHP? I'm planning to use WEKA as the back end of the web app (by calling Weka in command line from within PHP), but it doesn't seem that efficient. Do you have any idea what I should use for this project? Or should I just switch to Python? Thanks

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  • How to pass Multivalued parameters through URL in SSRS 2005

    - by Kali Charan Tripathi
    Hi All, I have main matrix report and I want to navigate my sub report from main report by Jump To URL:(Using below JavaScript function) method. ="javascript:void(window.open('http://localhost/ReportServer/Pages/ReportViewer.aspx?%2fKonsolidata_Data_Exporting_Project%2fEXPORT_REPORT_TEST&rs:Command=Render&RP_cntry="+Fields!STD_CTRY_NM.Value+"&RP_cll_typ_l1="+Join(Parameters!RP_cll_typ_l1.Value,",")+"'))" It is ok for the Single valued but giving exception for the multivalued Like An error has occurred during report processing. (rsProcessingAborted) Cannot read the next data row for the data set DS_GRID_DATA. (rsErrorReadingNextDataRow) Conversion failed when converting the nvarchar value '1,2,3,4' to data type int. Basically I have defined Parameters!RP_cll_typ_l1 as multivalued into my subreport as per ssrs multivalued parameter passing method. The value is going on sub report as '1,2,3,4' (not understandable by data set) It should be like as '1’,’2’,’3’,’4' or 1,2,3,4 How can I resolve this please help if any have solution? Thanks Kali Charan Tripathi(India) [email protected] [email protected]

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  • Binding from View-Model to View-Model of a child User Control in Silverlight? 2 sources - 1 target..

    - by andrej351
    Hi there, So i have a UserControl for one of my Views and have another 'child' UserControl inside that. The outer 'parent' UserControl has a Collection on its View-Model and a Grid control on it to display a list of Items. I want to place another UserControl inside this UserControl to display a form representing the details of one Item. The outer / parent UserControl's View-Model already has a property on it to hold the currently selected Item and i would like to bind this to a DependancyProperty on the inner / child UserControl. I would then like to bind that DependancyProperty to a property on the child UserControl's View-Model. I can then set the DependancyProperty once in XAML with a binding expression and have the child UserControl do all its work in its View-Model like it should. The code i have looks like this.. Parent UserControl: <UserControl x:Class="ItemsListView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel}"> <!-- Grid Control here... --> <ItemDetailsView Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel.SelectedItem}" /> </UserControl> Child UserControl: <UserControl x:Class="ItemDetailsView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel}" ItemDetailsView.Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel.Item, Mode=TwoWay}"> <!-- Form controls here... --> </UserControl> The selected Item is bound to the DependancyProperty fine. However from the DependancyProperty to the child View-Model does not. It appears to be a situation where there are two concurrent bindings which need to work but with the same target for two sources. Why won't the second (in the child UserControl) binding work?? Is there a way to acheive the behaviour I'm after?? Cheers.

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  • AJAX get data from large HTML page as the large HTML page loads

    - by Ed
    Not entirely sure whether this has a name but basically I have a large HTML page that is generated from results in a db. So viewing the HTML page (which is a report) in a browser directly does not display all contents immediately but displays what it has and additional HTML is added as the results from the DB are retrieved... Is there a way I can make an AJAX request to this HTML page and as opposed to waiting until the whole page (report) is ready, I can start processing the response as the HTML report is loaded? Or is there another way of doing it? Atm I make my AJAX response it just sits there for a minute or two until the HTML page is complete... If context is of any use: The HTML report is generated by a Java servlet and the page making the AJAX call is a JSP page. Unfortunately I can't very easily break the report up because it is generated by BIRT (Eclipse reporting extension). Thanks in advance.

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  • consistency of Trigger Procedure (before row trigger) Postgresql

    - by elgcom
    Using Postgresql. I try to use TRIGGER procedure to make some consistency check on INSERT. The question is ...... whether "BEFORE INSERT FOR EACH ROW" can make sure each row to insert "checked" and "inserted" one after another? do I need extra lock on table to survive from concurrent insert? check for new row1 - insert row1 - check for new row2 - insert row2 -- -- -- unexpired product name is unique. CREATE TABLE product ( "name" VARCHAR(100) NOT NULL, "expired" BOOLEAN NOT NULL ); CREATE OR REPLACE FUNCTION check_consistency() RETURNS TRIGGER AS $$ BEGIN IF EXISTS (SELECT * FROM product WHERE name=NEW.name AND expired='false') THEN RAISE EXCEPTION 'duplicated!!!'; END IF; RETURN NEW; END; $$ LANGUAGE plpgsql; CREATE TRIGGER trigger_check_consistency BEFORE INSERT ON product FOR EACH ROW EXECUTE PROCEDURE check_consistency(); -- INSERT INTO product VALUES("prod1", true); INSERT INTO product VALUES("prod1", false); INSERT INTO product VALUES("prod1", false); // exception! this is OK name | expired ============== p1 | true p1 | true p1 | false This is not OK name | expired ============== p1 | true p1 | false p1 | false or maybe I should ask, how can I use Trigger to implement "Primary" or "Unique" constraint-like SQL.

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  • Comet and Simultaneous Ajax request

    - by Amitd
    Hi , I am trying to use a COMET solution using ASP.NET . Trouble is i want to implement sending and notification part in the same page. On IE7, whenever i try to send a request ,it just gets queued up. After reading on internet and stackoverflow pages i found that i can only do 2 simultaneous asyn ajax requests per page. So until i close my comet Ajax request,my 2nd request doesnt get completed ,doesnt even go out from the browser. And when i checked with Firefox i just one Ajax comet request running all time..so doesnt that leave me one more ajax request? Also the solution uses IRequiressessionstate for Asynchronous HTTP Handler which i had removed.but still it creates problems on multiple instances of IE7. I had one work around which is stated here http://support.microsoft.com/kb/282402 it means we can increase the request limit from registry by default is 2. By changing "MaxConnectionsPer1_0Server" key in hive "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" we can increase the number of requests. Basically i want to broadcast information to multiple clients connected to a server using Comet and the clients can also send messages to the Server. Broadcasting works but the send request back to server doesnt work. Im using IIS 6 and ASP.NET . Are there any more workarounds or ways to send more requests? References : http://stackoverflow.com/questions/561046/how-many-concurrent-ajax-xmlhttprequest-requests-are-allowed-in-popular-browser http://stackoverflow.com/questions/349381/ajax-php-sessions-and-simultaneous-requests http://stackoverflow.com/questions/2412807/jquery-ajax-request-blocked-by-long-running-ajax-request http://stackoverflow.com/questions/898190/jquery-making-simultaneous-ajax-requests-is-it-possible

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  • Prolog : Simple question

    - by abduls85
    I want to add any strings user entered into a list run :- write('How many students you have: '),read(x),nl. enterNameOfStudents(x). enterNameOfStudents(x) :- for(A, 1, x, 1),write('Please enter the names of students'),read(A),??????,nl,fail. What do i put in the ?????? portion to ensure that whatever the user enter will go into a user-defined list which will be used for further processing later ? Please help. I have tried numerous stuff like append and other but it does not work :(

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  • Workflow Foundation 4 WorkflowServiceHost Message Correlation

    - by Lygpt
    I have 2 methods on a workflow service hosted in WorkflowServiceHost. The first method is called and starts the regular workflow sequence - talking to other web services, database work etc but on some occassions will pause and persist to db (as-in the delay activity) and wait for some human action to take place before continuing. I need my second method to be able to hook into this persisted workflow, change a local variable and then continuing processing. I have looked at message based correlation in workflow but can only seem to find examples where some kind of infinite while loop keeps the workflow instance active so that the second service method call can arrive whilst it's still running. Because my workflow instance will be delayed/persisted, the second service call doesn't seem to get anywhere (I can't have an infinite while loop keeping the workflow instance active). I hope this makes sense - cheers!

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  • Readdirectorychanges not working with big file

    - by sanky
    i was working with readdirectorychangesW till i encountered an unwanted behavior.below is short reference the way i am using my readdirectorychanges func. The behavior is that in case a big file in GBs is copied to the watched directory i get the notification immediately and thereby i start doing my operation according to the notification i receive ,but the file IO ( copy operation is still pending) and that results in unxpected state. Can anyone please suggest a way to synchronize this operation. I want the copy operation(that gave me notification) to get completed first then i want to do my processing. while(ReadDirectoryChangesW( hDir, pBuffer, nBufSize, FALSE, FILE_NOTIFY_CHANGE_FILE_NAME, &BytesReturned, NULL, NULL )) { pBufferCurrent = pBuffer; while(pBufferCurrent) { switch(pBufferCurrent->Action) { case FILE_ACTION_ADDED: break; default: break; } if (pBufferCurrent->NextEntryOffset) pBufferCurrent = (FILE_NOTIFY_INFORMATION*)(((oef_u8_t*)pBufferCurrent) + pBufferCurrent->NextEntryOffset); else pBufferCurrent = NULL; }

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  • Ignoring 'A' and 'The' when sorting with XSLT

    - by ChrisV
    I would like to have a list sorted ignoring any initial definite/indefinite articles 'the' and 'a'. For instance: The Comedy of Errors Hamlet A Midsummer Night's Dream Twelfth Night The Winter's Tale I think perhaps in XSLT 2.0 this could be achieved along the lines of: <xsl:template match="/"> <xsl:for-each select="play"/> <xsl:sort select="if (starts-with(title, 'A ')) then substring(title, 2) else if (starts-with(title, 'The ')) then substring(title, 4) else title"/> <p><xsl:value-of select="title"/></p> </xsl:for-each> </xsl:template> However, I want to use in-browser processing, so have to use XSLT 1.0. Is there any way to achieve this in XLST 1.0?

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