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  • WPF windows locked when calling webservice. Even when run asynchronously

    - by SumGuy
    Hi there. I'm having a big problem when calling a web service from my WPF application. The application/window locks until the process has completed. I've attempted to run this asynchronously but the problem still persists. Currently, the web service call I'm making can last 45-60 seconds. It runs a process on the server to fetch a big chunk of data. As it take a little while I wanted to have a progress bar moving indeterminately for the user to see that the application hasn't stalled or anything (you know how impatatient they get). So: private void btnSelect_Click(object sender, RoutedEventArgs e) { wDrawingList = new WindowDrawingList(systemManager); AsyncMethodHandler caller = default(AsyncMethodHandler); caller = new AsyncMethodHandler(setupDrawingList); // open new thread with callback method caller.BeginInvoke((Guid)((Button)sender).Tag, MyAsyncCallback, null); } Click a button and the app will create the form that the async stuff will be posted to and set up the async stuff calling the async method. public bool setupDrawingList(Guid ID) { if (systemManager.set(ID)) { wDrawingList.Dispatcher.Invoke(DispatcherPriority.Background, new Action(() => { wDrawingList.ShowForm(); Hide(); })); return true; } return false; } This is the async method. The showForm method contains the calls to setup the new form including the monster web service call public void MyAsyncCallback(IAsyncResult ar) { // Because you passed your original delegate in the asyncState parameter of the Begin call, you can get it back here to complete the call. MethodDelegate dlgt = (MethodDelegate)ar.AsyncState; // Complete the call. bool output = dlgt.EndInvoke(ar); try { // Retrieve the delegate. AsyncResult result = (AsyncResult)ar; AsyncMethodHandler caller = (AsyncMethodHandler)result.AsyncDelegate; // Because this method is running from secondary thread it can never access ui objects because they are created // on the primary thread. // Call EndInvoke to retrieve the results. bool returnValue = caller.EndInvoke(ar); // Still on secondary thread, must update ui on primary thread UpdateUI(returnValue == true ? "Success" : "Failed"); } catch (Exception ex) { string exMessage = null; exMessage = "Error: " + ex.Message; UpdateUI(exMessage); } } public void UpdateUI(string outputValue) { // Get back to primary thread to update ui UpdateUIHandler uiHandler = new UpdateUIHandler(UpdateUIIndicators); string results = outputValue; // Run new thread off Dispatched (primary thread) this.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Normal, uiHandler, results); } public void UpdateUIIndicators(string outputValue) { // update user interface controls from primary UI thread sbi3.Content = "Processing Completed."; } Any help or theories are appreciated. I'm at a loss. Thanks in advance

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  • problem with Infopath web services

    - by AB
    I want to have some url for my infopath form and give that link to user instead of going to form library and click new...how is it possible? Also when I created Infopath form I have given some text fields and button, I don't want the Infopath services buttons(Save,save as...) how I cna remove those? Any suggestions would really be appreciated...Thanks

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  • addchild not displaying content

    - by Rajeev
    In the following code i dont have any error but why is that the addchild(video); i.e, the the video captured by webcam is not displayed <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Script> <![CDATA[ import org.com.figurew; import mx.controls.Button; import mx.controls.Alert; import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public function addBody():void { var ret:Number = figurew.getInstance().getparam(); if( ret == 1) { Alert.show("Camera detected"); } if(ret == 0) { Alert.show("No camera detected"); } var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(30, 40); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } ]]> </mx:Script> <mx:Button label="Test camera" click="addBody();" x="99" y="116"/> </mx:Application > figurew.as package org.com { import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public class figurew extends Sprite { public function figurew() { //getparam(); var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } public function getparam():Number { var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); return 1; } else { return 0; trace("No Camera Detected"); } } private static var _instance:figurew = null; public static function getInstance():cldAS { if(_instance == null) { trace("No instance found"); _instance = new cldAS(); } return _instance; } } }

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  • Partial view postback from a standard Html form with MVC

    - by fearofawhackplanet
    I have a file upload button on my MVC view. After the file is uploaded, my FileList partial view on the page should refresh. I tried to upload with Ajax.BeginForm(), but have discovered that Ajax will not submit file data. I've got the file upload working now by using the jQuery Form plugin, which lets you ajaxify the normal Html.BeginForm() submit method. Is is still possible to trigger the partial page update using this method?

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  • get output of last Process on SSAS cube

    - by Raj More
    I have processed a SSAS cube. After it was done processing, I hit the close button - and then realized that I should have saved the output. I think SSAS stores the processing log as a text or XML file, but I do not know what folder to look into. Can someone direct me to retrieving processing logs?

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  • How to set input focus to a shown dialog in Qt?

    - by Jake Petroules
    In a button click slot, I create and exec() a dialog with a NULL parent. Inside the dialog's constructor, I have: this->activateWindow(); this->raise(); this->setFocus(); The dialog is application modal and has strong focus. However, it does NOT respond to keyboard events until I click on it. How do I make the dialog get focus without having to click it?

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  • Unexpected Error in Selenium

    - by Abhishek Dixit
    I am getting a Unexpected error in some of the Selenium RC code. Some time it works fine but sometimes it gives the Unexpected error and the scripts stop at that line only. Example: There is script for "Login" than it click on the link than fills some form than press some button. Sometimes its run till Login, sometimes till click of a link sometimes it executes full. Please give me some solution for this its urgent.

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  • Visual Studio Question: How to go to a specific file path and line number programmatically?

    - by Jack
    In the Visual Studio output window, you can double click a line that contains a file path and line number and it automatically takes you to that location. In my program, I need to mimic this behavior and be able to click something (a button for example) and do go to a specific file and line number that I tell it to go to. Any help/suggestions would be appreciated. I am working in C#.

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  • asp.net mvc & jquery dialog: What approach do I take to add items to a dropdownlist/select list with

    - by Mark Redman
    Hi, I am new to MVC and have a grasp of the basic model, but still doing everything with postbacks etc. One aspect of the UI I want to build is to have a drop-down-list of items with a button to add an item to the database and refresh the list. Achieving this with WebForms was straight forward as everything was wrapped in UpdatePanels, but what is the best approach to achieve this using MVC? Part of the markup for the list and button look like this: <table> <tr> <td><%=Html.DropDownList("JobTitleSelectList", Model.JobTitleSelectList, "(select job title)", new { @class = "data-entry-field" })%></td> <td>&nbsp;</td> <td><a id="AddJobTitleDialogLink" href="javascript: addJobTitleDialog();" title="Add Job Title"><img id="AddJobTitleButtonImage" src="/Content/Images/Icons/16x16/PlusGrey.png" border="0" /></a></td> </tr> </table> The Dialog is a standard jquery Ui dialog, looks like this: <div id="SingleTextEntryDialog" style="display:none"> <table> <tr> <td>Name:</td> <td><input id="SingleTextEntryDialogText" type="text" size="25" /></td> </tr> </table> </div> I am guessing I need to put this into a UserControl / PartialView (are they the same thing?) Also with the strongly typed View how do I pass the Model or just the SelectList Property to the UserControl or is this not the case? Nor sure if there should be form in the dialog div? or how that is going to postback via ajax. Some examples show a lot of ajax code in the page something like: $.ajax({...}); I assume doing this using jquery is more code than asp.net webforms, but there is just more code to see doing a "View Source" on a page? Your comments appreciated.

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  • JQuery - Pass variables to PHP script via AJAX call and then display file

    - by hfidgen
    Hiya, I'm trying to generate Outlook event files for my events, doing so on the fly as and when someone requests it by pressing a link on the page. Here's what i've got so far, but I can't find out how to get the browser to download the content which is returned. I know how I could do this if I sent everything via _GET, but I'd prefer to do it via _POST, hence I'm going down this route.. Any thoughts? Thanks! HTML / Javascript <script> $(function() { $(".button").click(function() { // validate and process form // first hide any error messages var start = $("input#start").val(); var end = $("input#end").val(); var dataString = 'start='+ start + '&end=' + end; $.ajax({ type: "POST", url: "/calendar.php", data: dataString, success: function(data) { //Need to return the file contents somehow! } }); return false; }); }); </script> <form name="calendar" method="post" action=""> <input type="hidden" name="start" id="start" value="<?php echo $start; ?>" /> <input type="hidden" name="end" id="end" value="<?php echo $end; ?>" /> <input type="submit" name="submit" class="button" id="submit_btn" value="Outlook" /> </fieldset> </form> PHP File <?php if (isset($_POST['start'])) { $start = $_POST['start']; $end = $_POST['end']; $c = header("Content-Type: text/Calendar"); $c .= header("Content-Disposition: inline; filename=calendar.ics"); $c .= "BEGIN:VCALENDAR\n"; $c .= "VERSION:2.0\n"; $c .= "PRODID:-//xxxyyyy//NONSGML //EN\n"; $c .= "METHOD:REQUEST\n"; // requied by Outlook $c .= "BEGIN:VEVENT\n"; $c .= "UID:". $start . $end ."-" . "-xxxxyyyy.com\n"; // required by Outlook $c .= "DTSTAMP:".date('Ymd').'T'.date('His')."\n"; // required by Outlook $c .= "DTSTART:20080413T000000\n"; $c .= "SUMMARY:" . "\n"; $c .= "DESCRIPTION:" . "\n"; $c .= "END:VEVENT\n"; $c .= "END:VCALENDAR\n"; echo $c; } else { echo "Sorry you can't access this page directly"; } ?>

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  • datagridview rowsremoved event gets called every time data loads

    - by Nilotpal Das
    The datagridview rowsremoved event gets called every time the data gets loaded. It also makes sense to a certain extent that every time the data loads, the existing rows are removed. so technically the event should get called. But how do i differenciate that from the actual delete button getting pressed. I don't think the key events should be used, that wouldn't be a clean approach. Any help will be most appreciated.

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  • Clearing the KeyChain certificates and install again on Mac

    - by fyasar
    Hi There, I decided that i should clear my keychain access certificates, beauce it's containing lot of test certificate, i heard that i can clear my all certificates from keychain's preferences "Reset My Defult..." button. But when applied to reset to keychain i need to reinstall my iphone developer certificates again. Did anyone make this ? And I would like to know from start to end. Thank you

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  • Delete text in text box using PHP

    - by Idealflip
    Hello, is there a way to remove text from a text box using a submit button? I don't want to delete text from all boxes on the form. And I don't want to delete text 'onclick', for the element. I need the code to clear the text box, to initiate from within a block. Thanks for your help!

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  • Django: How can I protect against concurrent modification of data base entries

    - by Ber
    If there a way to protect against concurrent modifications of the same data base entry by two or more users? It would be acceptable to show an error message to the user performing the second commit/save operation, but data should not be silently overwritten. I think locking the entry is not an option, as a user might use the "Back" button or simply close his browser, leaving the lock for ever.

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