Search Results

Search found 27893 results on 1116 pages for 'event programming'.

Page 716/1116 | < Previous Page | 712 713 714 715 716 717 718 719 720 721 722 723  | Next Page >

  • WCF Duplex Interaction with Web Server

    - by Mark Struzinski
    Here is my scenario, and it is causing us a considerable amount of grief at the moment: We have a vendor web service which provides base level telephony functionality. This service has a SOAP api, which we are leveraging to build up a custom UI that is integrated into our in house web apps. The api functions on 2 levels. You make standard client calls into the service to initiate actions, such as Login, Place Call, Hang Up, etc. On a different thread, the service sends events back to the client to alert the user of things that are occurring on the system (agent successfully logged in, call was disconnected, etc). I implemented a WCF service to sit between the web server and the vendor service. This WCF service operates in duplex mode, establishing a 2 way connection with the web server. The web server makes outbound calls to the WCF service, which routes them to the vendor's web service. Events are received back to the WCF service, which passes them onto the web server via a callback channel on the WCF client. As events are received on the web server, they are placed into a hash table with the user's name as the key, and a .NET queue as the value to hold the event. Each event is enqueued to the agent who owns it. On a 2 second interval, the web page polls the web server via an ajax request to get new events for the logged in user. It hits the hash table for the user key, dequeues any events that are present, and serializes them back up to the web page. From there, they are processed in order and appropriate messages are displayed to the user. This implementation performs well in a single user scenario. The second I put more than 1 user on the system, I start getting frequent timeouts with the following CommunicationException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond We are running Windows Server 2008 R2 both servers. Both the web app and WCF service are running on .NET 3.5. The WCF service is running under the net.tcp protocol in duplex mode. The web app is ASP.NET MVC 2. Has anyone dealt with anything like this scenario? Is there a more efficient way (or a widely accepted pattern) to implement this?

    Read the article

  • access exception when invoking method of an anonymous class using java reflection

    - by Asaf David
    Hello I'm trying to use an event dispatcher to allow a model to notify subscribed listeners when it changes. the event dispatcher receives a handler class and a method name to call during dispatch. the presenter subscribes to the model changes and provide a Handler implementation to be called on changes. Here's the code (I'm sorry it's a bit long). EventDispacther: package utils; public class EventDispatcher<T> { List<T> listeners; private String methodName; public EventDispatcher(String methodName) { listeners = new ArrayList<T>(); this.methodName = methodName; } public void add(T listener) { listeners.add(listener); } public void dispatch() { for (T listener : listeners) { try { Method method = listener.getClass().getMethod(methodName); method.invoke(listener); } catch (Exception e) { System.out.println(e.getMessage()); } } } } Model: package model; public class Model { private EventDispatcher<ModelChangedHandler> dispatcher; public Model() { dispatcher = new EventDispatcher<ModelChangedHandler>("modelChanged"); } public void whenModelChange(ModelChangedHandler handler) { dispatcher.add(handler); } public void change() { dispatcher.dispatch(); } } ModelChangedHandler: package model; public interface ModelChangedHandler { void modelChanged(); } Presenter: package presenter; public class Presenter { private final Model model; public Presenter(Model model) { this.model = model; this.model.whenModelChange(new ModelChangedHandler() { @Override public void modelChanged() { System.out.println("model changed"); } }); } } Main: package main; public class Main { public static void main(String[] args) { Model model = new Model(); Presenter presenter = new Presenter(model); model.change(); } } Now, I except to get the "model changed" message. However, I'm getting an java.lang.IllegalAccessException: Class utils.EventDispatcher can not access a member of class presenter.Presenter$1 with modifiers "public". I understand that the class to blame is the anonymous class i created inside the presenter, however I don't know how to make it any more 'public' than it currently is. If i replace it with a named nested class it seem to work. It also works if the Presenter and the EventDispatcher are in the same package, but I can't allow that (several presenters in different packages should use the EventDispatcher) any ideas?

    Read the article

  • Using the iPhones Multi-Touch Keyboard Search Button

    - by senfo
    I have a regular text field on a view and I'd like to make use of the search button on the iPhones keyboard. For the life of me, I can't figure out how to do this. There doesn't seem to be any event exposed that I can wire up that specifically relates to the search button on the keyboard. I've googled around, but I also haven't found anything related to this subject.

    Read the article

  • Datatable binding to a form is not working

    - by saurabh
    Hi All i am having a form which are having 4 lables and these lables value are displayed in the 4 textboxs, i am using MVVM and binding these textboxs with the Datatble which is coming through the typed dataset not the problem here is when i add a new row in the datatable with default values of columns and update ui by calling onpropertychanged event from my viewmodel , these values are not getting reflected on the form. Before adding a new row in the table , i am removing all previous rows and then add. TIA. Saurabh

    Read the article

  • resignFirstResponder OR - (IBAction) doneButtonOnKeyboardPressed: (id)sender

    - by mihirpmehta
    I was just wondering which approach is better to hide keyboard in iphone application 1 Implement - (IBAction) doneButtonOnKeyboardPressed: (id)sender { } Method on Textfield 's Did End On Exit Event OR In Textfield implement this -(BOOL)textFieldShouldReturn:(UITextField *)theTextField { [txtName resignFirstResponder]; return YES; } Which Option is better to choose in which situation...? Any one Option has advantage over other...?

    Read the article

  • An EventBus framework for Android

    - by Benju
    Can anybody recommend a good framework for handling events in Android? These would be business logic events like UserUpdatedEvent. I am looking for something similar to the EventBus provided by GWT-EVENT but for a JVM that supports weak-references.

    Read the article

  • communicating swf files.

    - by Addis Abebayehu
    I have two swf files I would like communicate. I have a videoplaylist.swf and a player.swf. I would like to select a video from videoplaylist.swf and have it played in the player.swf. How do I do that? How am I going to dispatch the click event with the video url to the player.swf? from the videoplaylist.swf. Please help.

    Read the article

  • How to detect the vertical scrollbar in a DataGridView control

    - by Billy
    Using winforms in vs2008. I have a DataGridView and I would like to detect when the vertical scroll bar is visible. What event should I register for? I am adding the summing the each cell value in the last column of the grid and displaying that value in a textbox at the bottom of the DataGridView. I would like this textbox to stay lined up with the cell values (I have made them right aligned since it is $$ values) even after the scroll bar is present.

    Read the article

  • UIControlEventTouchDragExit only fires ~100 pixels out

    - by Jonathan
    Im trying to "get" when a finger/touch leaves a UIButton in objective C for iphone. I was told in another answer to use UIControlEventTouchDragExit however this event only fires when the touch gets about 100 pixels away from the button, whereas I would like it to be immediate. The apple docs say that goes according to the bounds however my understand is the bounds and the frame are the same unless you rotate the UIbutton (or whatever)

    Read the article

  • UIControlEventTouchDragExit only fires ~100 pixels out

    - by Jonathan
    Im trying to "get" when a finger/touch leaves a UIButton in objective C for iphone. I was told in another answer to use UIControlEventTouchDragExit however this event only fires when the touch gets about 100 pixels away from the button, whereas I would like it to be immediate. The apple docs say that goes according to the bounds however my understand is the bounds and the frame are the same unless you rotate the UIbutton (or whatever)

    Read the article

  • OnChange not firing in IE11

    - by bulletproof
    The date picker we use is created in a javascript library. It has a dropdown for the month and year and when these change it fires an onChange event to run a function that refreshes the dates displayed. Below is the function that creates the calendar. function makeCalendar(intWhatMonth,intWhatYear,bViewOnly) { if (bViewOnly) {intWhatMonth-=1;} var strOutput = ''; var intStartMonth=intWhatMonth; var intStartYear=intWhatYear; var intLoop; var strTemp=''; var strDateColWidth; dteCur.setMonth(intWhatMonth); dteCur.setFullYear(intWhatYear); dteCur.setDate(dteToday.getDate()); dteCur.setHours(0);dteCur.setMinutes(0);dteCur.setSeconds(0);dteCur.setMilliseconds(0); if (!(bViewOnly)) { strTemp='<form name="spiffyCal">'; } // special case for form not to be inside table in Netscape 6 if (scNN6) { strOutput += strTemp +'<table width="210" border="3" class="cal-Table" cellspacing="0" cellpadding="0"><tr>'; } else { strOutput += '<table width="210" border="3" class="cal-Table" cellspacing="0" cellpadding="0">'+strTemp+'<tr>'; } if (!(bViewOnly)) { strOutput += '<td class="cal-HeadCell" align="center" width="100%"><a href="javascript:'+this.varName+'.clearDay();"><img name="calbtn1" src="'+strDefBtnImgPath+'btn_del_small.gif" border="0" width="12" height="10"></a>&nbsp;&nbsp;<a href="javascript:'+this.varName+'.scrollMonth(-1);" class="cal-DayLink">&lt;</a>&nbsp;<SELECT class="cal-ComboBox" id="cboMonth" NAME="cboMonth" onChange="'+this.varName+'.changeMonth();">'; for (intLoop=0; intLoop<12; intLoop++) { if (intLoop == intWhatMonth) strOutput += '<OPTION VALUE="' + intLoop + '" SELECTED>' + msNames[intLoop] + '<\/OPTION>'; else strOutput += '<OPTION VALUE="' + intLoop + '">' + msNames[intLoop] + '<\/OPTION>'; } strOutput += '<\/SELECT><SELECT class="cal-ComboBox" id="cboYear" NAME="cboYear" onChange="'+this.varName+'.changeYear();">'; for (intLoop=this.minYearChoice; intLoop<this.maxYearChoice; intLoop++) { if (intLoop == intWhatYear) strOutput += '<OPTION VALUE="' + intLoop + '" SELECTED>' + intLoop + '<\/OPTION>'; else strOutput += '<OPTION VALUE="' + intLoop + '">' + intLoop + '<\/OPTION>'; } strOutput += '<\/SELECT>&nbsp;<a href="javascript:'+this.varName+'.scrollMonth(1);" class="cal-DayLink">&gt;</a>&nbsp;&nbsp;<a href="javascript:'+this.varName+'.hide();"><img name="calbtn2" src="'+strDefBtnImgPath+'btn_close_small.gif" border="0" width="12" height="10"></a><\/td><\/tr><tr><td width="100%" align="center">'; } else { strOutput += '<td class="cal-HeadCell" align="center" width="100%">'+msNames[intWhatMonth]+'-'+intWhatYear+'<\/td><\/tr><tr><td width="100%" align="center">'; } firstDay = new Date(intWhatYear,intWhatMonth,1); startDay = firstDay.getDay(); if (((intWhatYear % 4 == 0) && (intWhatYear % 100 != 0)) || (intWhatYear % 400 == 0)) msDays[1] = 29; else msDays[1] = 28; strOutput += '<table width="210" cellspacing="1" cellpadding="2" border="1"><tr>'; for (intLoop=0; intLoop<7; intLoop++) { if (intLoop==0 || intLoop==6) { strDateColWidth="15%" } else { strDateColWidth="14%" } strOutput += '<td class="cal-HeadCell" width="' + strDateColWidth + '" align="center" valign="middle">'+ msDOW[intLoop] +'<\/td>'; } strOutput += '<\/tr><tr>'; var intColumn = 0; var intLastMonth = intWhatMonth - 1; var intLastYear = intWhatYear; if (intLastMonth == -1) { intLastMonth = 11; intLastYear=intLastYear-1;} for (intLoop=0; intLoop<startDay; intLoop++, intColumn++) { strOutput += this.getDayLink(true,(msDays[intLastMonth]-startDay+intLoop+1),intLastMonth,intLastYear,bViewOnly); } for (intLoop=1; intLoop<=msDays[intWhatMonth]; intLoop++, intColumn++) { strOutput += this.getDayLink(false,intLoop,intWhatMonth,intWhatYear,bViewOnly); if (intColumn == 6) { strOutput += '<\/tr><tr>'; intColumn = -1; } } var intNextMonth = intWhatMonth+1; var intNextYear = intWhatYear; if (intNextMonth==12) { intNextMonth=0; intNextYear=intNextYear+1;} if (intColumn > 0) { for (intLoop=1; intColumn<7; intLoop++, intColumn++) { strOutput += this.getDayLink(true,intLoop,intNextMonth,intNextYear,bViewOnly); } strOutput += '<\/tr><\/table><\/td><\/tr>'; } else { strOutput = strOutput.substr(0,strOutput.length-4); // remove the <tr> from the end if there's no last row strOutput += '<\/table><\/td><\/tr>'; } if (scNN6) { strOutput += '<\/table><\/form>'; } else { strOutput += '<\/form><\/table>'; } dteCur.setDate(1); dteCur.setHours(0);dteCur.setMinutes(0);dteCur.setSeconds(0);dteCur.setMilliseconds(0); dteCur.setMonth(intStartMonth); dteCur.setFullYear(intStartYear); return strOutput; } this.makeCalendar=makeCalendar; We have recently upgraded to IE11 and it is not firing this event anymore. I've tested this in an earlier version of IE and also in Chrome and it works as expected. The functions called from the anchor tags are working as expected. Creating a dropdown with an onChange event in html works in IE11. Has anyone come across anything like this in IE11? I have checked the console and it is showing no errors.

    Read the article

  • Android Autolink to launch WebView

    - by Jason Kim
    Hi, I'm using autoLink="web" attribute in TextView to launch Browser. However, I want to launch the myActivity with WebView, when I click the links in TextView. Is is possible that catch the click event and invoke startActivity? Thanks in advance, Jason

    Read the article

  • How to know a device's name from its device ID in OS X?

    - by yangumi
    Hi all, I'm writing a program in OS X that receives click events from a mouse and a touchpad. When the user clicks at somewhere, the OS sends the device ID, which is just an int, and the position of the cursor to my callback function. I want to know if the click event comes from mouse or touchpad. So, how can I know the device's name from its device ID? Thank you! (I'm sorry for my poor English.)

    Read the article

  • How can I get text under mouse pointer WebBrowser control?

    - by Alexander
    I'm currently working on WYSIWYG editor using .net WebBrowser control and I need to implement spell checking. My question is how can I get text under mouse pointer when I right click on the misspelled word to show all spell suggestions? Tried to wrap every misspelled word in html label with javascript event, but there seems to be the problem in invoking C# code from javascript.

    Read the article

  • ObjectDisposedException from core .NET code

    - by John
    I'm having this issue with a live app. (Unfortunately this is post-mortem debugging - I only have this stack trace. I've never seen this personally, nor am I able to reproduce). I get this Exception: message=Cannot access a disposed object. Object name: 'Button'. exceptionMessage=Cannot access a disposed object. Object name: 'Button'. exceptionDetails=System.ObjectDisposedException: Cannot access a disposed object. Object name: 'Button'. at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.get_Handle() at System.Windows.Forms.Control.PointToScreen(Point p) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) exceptionSource=System.Windows.Forms exceptionTargetSite=Void CreateHandle() It looks like a mouse event is arriving at a form after the form has been disposed. Note there is none of my code in this stack trace. The only weird (?) thing I'm doing, is that I do tend to Dispose() Forms quite aggressively when I use them with ShowModal() (see "Aside" below). But I only do this after ShowModal() has returned (that should be safe right)? I think I read that events might be queued up in the event queue, but I can't believe this would be the problem. I mean surely the framework must be tolerant to old messages? I can well imagine that under stress messages might back-log and surely the window might go away at any time? Any ideas? If you could even suggest ways of reproducing, that might be useful. John Aside: TBH I've never quite understood whether calling Dispose() after Form.ShowDialog() is strictly necessary - the MSDN docs for ShowDialog() are to my mind a bit ambiguous.

    Read the article

  • Why does Visual Studio sometimes add a number when creating page events in codebehinds?

    - by Kevin Pang
    When writing up a codebehind in Visual Studio for ASP.NET web forms applications, I often use the dropdowns at the top of the window to autogenerate page event handlers (e.g. Page_Load, Page_PreRender). I've noticed that sometimes Visual Studio likes to add numbers to these function names like "Page_Load1" or "Page_PreRender2". Programatically speaking, this has no effect on the code. But stylistically, I find it a bit ugly. Is there any way to get rid of this behavior?

    Read the article

  • Print multiple images

    - by Murat
    I need to print a large image collection of pictures. If I use something like: printDocument.PrintPage += OnPrintPage; printDocument.Print(); my printing task size in printer queue takes more than 1 GB! Can anyone suggest how can I print the images one by one. Maybe some event like PrintJobIsFinished is available?

    Read the article

  • Gui's with Win32 API

    - by user146780
    I'm wondering what the correct way of creating Gui's in with Win32 API. Right now I just call the CreateWindowEx in my WM_CREATE event, but I don't think this is the right way to do it. Just as an example, what would be the correct way of adding a 100x20 EditField and getting text from it? Would you create it on WM_Create then use GetText()? Thanks

    Read the article

  • "Error #1006: getAttributeByQName is not a function." Flex 2.0.1 hotfix 2

    - by Deveti Putnik
    Hi, guys! I am working on some old Flex project (Flex 2.0.1 hotfix 2) and I am rookie in Flex programming. So, I wrote code for accessing some ASP.NET web service: <?xml version="1.0" encoding="utf-8"?> [Bindable] public var users:ArrayOfUser; private function buttonClicked():void { mx.controls.Alert.show(dataService.wsdl); dataService.UserGetAll.send();/ } public function dataHandler(event:ResultEvent):void { Alert.show("alo"); var response:ResponseUsers = event.result as ResponseUsers; if (response.responseCode != ResponseCodes.SUCCESS) { mx.controls.Alert.show("Error: " + response.responseCode.toString()); return; } users = response.users; } ]]> <mx:Button label="Click me!" click="buttonClicked()"/> And this is what I get from debugger: WSDL loaded Invoking SOAP operation UserGetAll Encoding SOAP request envelope Encoding SOAP request body 'A97A2DC1-AEDA-C594-45D2-1BA2B0F3B223' producer sending message '10681130-43E7-3DA7-34DD-1BA2B85545E3' 'direct_http_channel' channel sending message: (mx.messaging.messages::SOAPMessage)#0 body = "<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <SOAP-ENV:Body> <tns:UserGetAll xmlns:tns="http://tempuri.org/"/> </SOAP-ENV:Body> </SOAP-ENV:Envelope>" clientId = "DirectHTTPChannel0" contentType = "text/xml; charset=utf-8" destination = "DefaultHTTP" headers = (Object)#1 httpHeaders = (Object)#2 SOAPAction = ""http://tempuri.org/UserGetAll"" messageId = "10681130-43E7-3DA7-34DD-1BA2B85545E3" method = "POST" recordHeaders = false timestamp = 0 timeToLive = 0 url = "http://192.168.0.201:8123/Service.asmx" 'A97A2DC1-AEDA-C594-45D2-1BA2B0F3B223' producer acknowledge of '10681130-43E7-3DA7-34DD-1BA2B85545E3'. Decoding SOAP response Encoded SOAP response <?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><UserGetAllResponse xmlns="http://tempuri.org/"><UserGetAllResult><ResponseCode>Success</ResponseCode><Users><User><Id>1</Id><Name>test</Name><Key>testKey</Key><IsActive>true</IsActive><Name>Petar i Sofija</Name><Key>123789</Key><IsActive>true</IsActive></User></Users></UserGetAllResult></UserGetAllResponse></soap:Body></soap:Envelope> Decoding SOAP response envelope Decoding SOAP response body And finally I get this error "Error #1006: getAttributeByQName is not a function.". As you can see, I get correct response from web service, but dataHandler function is never got called. Can anyone please help me out? Thanks, Deveti Putnik

    Read the article

  • Where to keep a querystring parameter in session ?

    - by hoang
    Users will get to my site using a specific parameter, e.g. : http://www.mysite.com/whatever/?keepTrackOfThisValue=foo or http://www.mysite.com/who/cares/?keepTrackOfThisValue=bar I would like to store the value of this peculiar parameter in Session everytime I found it in the QueryString. I'm currently using the Session_Start event in Global.asax in order to store this but I would like to override the value each time the parameter value change, which is not possible my way. Where would you do this ?

    Read the article

  • jquery getting post action url

    - by bandhunt
    I'm trying to access the post target action in a jquery function. example: <form action="/page/users" id="signup" method="post"> I'd like to access the "action" part - "/page/users" in this case. $('#signup').live("submit", function(event) { // get this submitted action } Seems like I'm missing something very simple. I see the value in the dom but don't know where it's stored in jquery. Thanks!

    Read the article

  • Trigger a logout from a liferay portlet

    - by Buzzzz
    Hello all, Being quite new to liferay/portal/portlet development you run into problems daily . Now i'm trying to for a logout from a portlet but have not found a way to accomplish that. How are you supposed to do that? Should I try to send some kind of logout event or something? Greping around in the liferay sources i have found a LogoutAction.java that seems promising but how do one trigger that? Best Regards Anders Olme

    Read the article

< Previous Page | 712 713 714 715 716 717 718 719 720 721 722 723  | Next Page >