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  • Where can I find clear examples of MVC?

    - by Tom
    I've read a couple of things about MVCs but I still don't understand when they should be used and when they shouldn't be used. I am looking for clear examples that say things like "if you're developing this then you should use MVC, like this" and "if you're developing this, you shouldn't use MVC." Most of the examples I've seen rely on complex frameworks which have already implemented everything and you have to learn the framework and use it a lot to understand what's really happening. To many programmers, phrasings such as "UI business logic" sound like marketing terms — for example, the words "Instead the View binds directly to a Presentation Model" are used in this post. I am aware of the dangers that may lurk in the shadows as MVC is a concept and everyone feels like they know it best, yet nobody really knows exactly how to use it because there may be a lot of variables involved and everyone is allowed to have a different perspective on how to dissect a project into the Model, the View and the Controller. There is a lot of theory out there but very few clear examples. What I'm looking for are not "the best" ways of doing it so this should not be considered as subjective; I'm looking for different simple implementations that would allow me to decide on my own which are the best approaches. Succinctly: What are good on-line resources that present pro and con arguments to using MVC in various situations and provide clear examples to help the reader understand the concept?

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  • LINQ to SQL - Tracking New / Dirty Objects

    - by Joseph Sturtevant
    Is there a way to determine if a LINQ object has not yet been inserted in the database (new) or has been changed since the last update (dirty)? I plan on binding my UI to LINQ objects (using WPF) and need it to behave differently depending whether or not the object is already in the database. MyDataContext context = new MyDataContext(); MyObject obj; if (new Random().NextDouble() > .5) obj = new MyObject(); else obj = context.MyObjects.First(); // How can I distinguish these two cases? The only simple solution I can think of is to set the primary key of new records to a negative value (my PKs are an identity field and will therefore be set to a positive integer on INSERT). This will only work for detecting new records. It also requires identity PKs, and requires control of the code creating the new object. Is there a better way to do this? It seems like LINQ must be internally tracking the status of these objects so that it can know what to do on context.SubmitChanges(). Is there some way to access that "object status"? Clarification Apparently my initial question was confusing. I'm not looking for a way to insert or update records. I'm looking for a way, given any LINQ object, to determine if that object has not been inserted (new) or has been changed since its last update (dirty).

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  • Strange behavior due to wx.Frame.SetTitle

    - by Anurag Uniyal
    In a wxPython application, which i am porting to Mac OSX, I set title of app frame every 500msec in update UI event, and due to that all the panels and windows are refreshed. That seems strange to me and almost halts my application which has many custom drawn controls and screens. I wanted to know what could be the reason behind it, is it normal for MAC? Here is a self-constrained script which replicates the scenario using timers. It keeps on printing "on paint" every 500ms because in timer I set title every 500ms. import wx app = wx.PySimpleApp() frame = wx.Frame(None, title="BasePainter Test") painter = wx.Panel(frame) def onPaint(event): dc = wx.PaintDC(painter) print "onPaint" painter.Bind(wx.EVT_PAINT, onPaint) def loop(): frame.SetTitle(frame.GetTitle()) wx.CallLater(500, loop) loop() frame.Show(True) app.SetTopWindow(frame) app.MainLoop() My system details: >>> sys.version '2.5 (r25:51918, Sep 19 2006, 08:49:13) \n[GCC 4.0.1 (Apple Computer, Inc. build 5341)]' >>> wx.VERSION (2, 8, 10, 1, '') >>> os.uname() ('Darwin', 'agyeys-mac-mini.local', '9.8.0', 'Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386', 'i386')

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  • Ajax call to parent window after form submission

    - by David
    Hi all, Pardon the complicated title. Here's my situation: I'm working on a Grails app, and using jQuery for some of the more complex UI stuff. The way the system is set up, I have an item, which can have various files (user-supplied) associated with it. On my Item/show view, there is a link to add a file. This link pops up a jQuery modal dialog, which displays my file upload form (a remote .gsp). So, the user selects the file and enters a comment, and when the form is submitted, the dialog gets closed, and the list of files on the Item/show view is refreshed. I was initially accomplishing this by adding onclick="javascript:window.parent.$('#myDialog').dialog('close');" to my submit button. This worked fine, but when submitting some larger files, I end up with a race condition where the dialog closes and the file list is refreshed before the new file is saved, and so the list of files is out of date (the file still gets saved properly). So my question is, what is the best way to ensure that the dialog is not closed until after the form submit operation completes? I've tried using the <g:formRemote tag in Grails, and closing the dialog in the "after" attribute (according to the Grails docs, the script is called after form submission), but I receive an error (taken from FireBug) stating that window.parent.$('#myDialog').dialog is not a function Is this a simple JavaScript/Grails syntax issue that I'm missing here, or am I going about this entirely wrong? Thanks so much for your time and assistance!

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  • AsyncTask and Contexts

    - by Michael
    So I'm working out my first multi-threaded application using Android with the AsyncTask class. I'm trying to use it to fire off a Geocoder in a second thread, then update the UI with onPostExecute, but I keep running into an issue with the proper Context. I kind of hobbled my way through using Contexts on the main thread, but I'm not exactly sure what the Context is or how to use it on background threads, and I haven't found any good examples on it. Any help? Here is an excerpt of what I'm trying to do: public class GeoCode extends AsyncTask<GeoThread, Void, GeoThread> { @Override protected GeoThread doInBackground(GeoThread... i) { List<Address> addresses = null; Geocoder geoCode = null; geoCode = new Geocoder(null); //Expects at minimum Geocoder(Context context); addresses = geoCode.getFromLocation(GoldenHour.lat, GoldenHour.lng, 1); } } It keeps failing at the sixth line there, because of the improper Context.

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  • jquery ajax post canceled

    - by hsemu
    I want to track the mouse click events on a set of UI components on a set of pages. To do this, I am using the following jquery/ajax call(trimmed out u): 1.Ajax call which will add the click logging. myClickLogger = { endpoint: '/path/to/my/logging/endpoint.html', logClickEvent: function(clickCode) { $.ajax({ 'type': 'POST', 'url': this.endpoint, 'async': true, 'cache': false, 'global': false, 'data': { 'clickCode':clickCode }, 'error': function(xhr,status,err){ alert("DEBUG: status"+status+" \nError:"+err); }, 'success': function(data){ if(data.status!=200){ alert("Error occured!"); } } }); } }; 2.JQuery click event which will call the ajax logger(the clickCode is an identifier for which button/image was clicked): $(document).ready(function() { $(".myClickEvent[clickName]").click(function() { var clickCode = $(this).attr("clickName"); myClickLogger.logClickEvent(clickCode); }); }); The above ajax call(1.) is "canceled" by browser whenever the button click being tracked takes to a new page. If I change 'aysnc' to 'false', then the ajax call succeeds. Also, click events which do not take to a new page succeed. Only the click events taking to new page are being canceled. I do not want to make the call synchronous. Any ideas, what could be the issue? How can I guarantee that the asynchronous call before is finished when the click event takes to a new page?

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  • WPF Enable/Disabled controls from a page placed inside main window application

    - by toni
    Hi! I have an WPF application that has a main window. In the left side of this Window there are some buttons into a listbox, it is a kind of menu to access faster to pages. These buttons belongs to pages that they are loaded inside the window when the user selects one. Main window also has another main menu in the top for doing other tasks. When a page is loaded in the main window and the user clicks a button of this currently loaded page, it starts a task that takes a long time. While this long task is executing I want the user can not select (or press) any of the buttons into the listbox because In the loaded page the long task also is updating the UI for this page. I would like to disabled (isEnabled=false) the listbox when long task is executing and not to enabled it until the long task has finished. How can I do this? I mean, from the page is currently loaded I want to disabled the listbox placed in the main window that is the owner. The listbox doesn't belong to the currently loaded page. Thanks!

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  • Databinding problem in dropdownlist box by generics in C#

    - by sakir-ali
    I want to implement stack in my program by Genericx. I have a textbox and button to add elements in stack, a dropdownlist box and a button to bind total stack in dropdownlist box. I have generic class and the code is below: [Serializable] public class myGenClass<T> { private T[] _elements; private int _pointer; public myGenClass(int size) { _elements = new T[size]; _pointer = 0; } public void Push(T item) { if (_pointer > _elements.Length - 1) { throw new Exception("Stack is full"); } _elements[_pointer] = item; _pointer++; } public T Pop() { _pointer--; if (_pointer < 0) { throw new Exception("Stack is empty"); } return _elements[_pointer]; } public T[] myBind() { T[] showall = new T[_pointer]; Array.Copy(_elements,showall, _pointer); T[] newarray = showall; Array.Reverse(showall); return showall; } } and my .cs page is below: public partial class _Default : System.Web.UI.Page { myGenClass<int> mystack = new myGenClass<int>(25); protected void Button1_Click(object sender, EventArgs e) { mystack.Push(Int32.Parse(TextBox1.Text)); //DropDownList1.Items.Add(mystack.Pop().ToString()); TextBox1.Text = string.Empty; TextBox1.Focus(); } protected void Button2_Click(object sender, EventArgs e) { //string[] db; //db = Array.ConvertAll<int, string>(mystack.myBind(), Convert.ToString); DropDownList1.DataSource = mystack.myBind(); DropDownList1.DataBind(); } } but when I bind the datasource property of dropdownlist box to generic type return array (i.e. myBind()), it shows empty... Please help..

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  • Javascript Error with DataTable jQuery plugin

    - by stevoyoung
    I am getting a JS error and what to know what it means and how to solve it. (JS noob here) Error: "tId is not defined" Line of JS with error: "if (s[i].sInstance = tId) { " More Information I am using the Data Table (http://datatables.net) jQuery plugin. I have a two tables with a class of "dataTable" loaded on a page (inside of jQuery UI tabs). The tables render as expected but I get the error above in Firebug. Attached is my Data Table config file... $(document).ready(function() { //Take from: http://datatables.net/forums/comments.php?DiscussionID=1507 // before creating a table, make sure it is not already created. // And if it is, then remove old version before new one is created var currTable = $(".dataTable"); if (currTable) { // contains the dataTables master records var s = $(document).dataTableSettings; if (s != 'undefined') { var len = s.length; for (var i=0; i < len; i++) { // if already exists, remove from the array if (s[i].sInstance = tId) { s.splice(i,1); } } } } oTable = $('.dataTable').dataTable({ "bJQueryUI": true, "sPaginationType": "full_numbers", "bFilter": false }); }); What does the error mean and how do I resolve it?

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  • Good-practices: How to reuse .csproj and .sln files to create your MSBuild script for CI ?

    - by Gishu
    What is the painless/maintainable way of using MSBuild as your build runner ? (Forgive the length of this post) I was just trying my hand at TeamCity (which I must say is awesome w.r.t. learning curve and out of the box functionality). I got an SVN MSBuild NUnit NCover combo working. I was curious as to how moderate to large projects are using MSBuild - I've just pointed MSBuild to my Main sln file. I've spent some time with NAnt some years ago and I found MSBuild to be a bit obtuse. The docs are too dense/detailed for a beginner. MSBuild seems to have some special magic to handle .sln files ; I tried my hand at writing a custom build script by hand, linking/including .csproj files in order (such that I could have custom pre-post build tasks). However it threw up (citing duplicate target imports). I'm assuming most devs wouldn't want to go messing around with msbuild proj files - they'd be making changes to the .csproj and .sln files. Is there some tool / MSBuild task that reverse-engineers a new script from an existing .sln + its .csproj files that I'm unaware of ? If I'm using MSBuild just to do the compile step, I might as well use Nant with an exec task to MSBuild for compiling the solution ? I've this nagging feeling that I'm missing something obvious. My end-goal here is to have a MSBuild build script which builds the solution that acts as a build script instead of a compile step. Allows custom pre/post tasks. (e.g. call nunit to run a nunit project (which seems to be not yet supported via the teamcity web UI)) stays out of the way of the developers making changes to the solution. No redundancy ; shouldn't require devs to make the same change in 2 places

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  • IE6 background-position(?) issue

    - by turezky
    I apply to stackoverflow as my last resort. I got this ie6 bug while using the image at the background of the link. It seems that ie6 scrolls the background. How can I avoid it? At some width it shows like this: And at some other it shows like that: IE7 & FF show this just like I expect: The links are placed inside the div which is floating to the right. <a href="/tr" class="menuLink" style="background-image:url(/img/tr.png);">TR</a> <a href="/eng" class="menuLink" style="background-image:url(/img/eng.png); margin-right:30px;">ENG</a> <a href="/logout" class="menuLink" style="background-image:url(/img/logout.png);"><?=$ui["exit"];?></a> .menuLink { font-family:"Tahoma"; font-size:11px; color:#003300; text-decoration:underline; font-weight: bold; background-position:0% 50%; background-repeat:no-repeat; } .menuLink:hover { font-size:11px; color:#047307; text-decoration:underline; font-weight: bold; } Any hints how can I avoid this?

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  • Stuck on preserving config file in WIX major upgrade!

    - by Joshua
    ARGH! Wix is driving me crazy. So, of course I have seen the many posts both here on stackoverflow and elsewhere about WiX and major upgrades. I inherited this software project using WiX and am releasing a new version. I need this new version to leave ONLY the one configuration file if it's present, and replace everything else. This installer works EXCEPT no matter what I have done so far, the new XML file replaces the old on every install. Even attempting to use NeverOverwrite="yes" and even trying and messing back and forth with OnlyDetect="no"! I am simply stuck and humbly request a little guidance. The file that needs to be preserved is called SETTINGS.XML and is in the All Users-ApplicationData directory. Here is (most of) my .wxs file! <Package Id='$(var.PackageCode)' Description="Pathways Directory Software" InstallerVersion="301" Compressed="yes" /> <WixVariable Id="WixUILicenseRtf" Value="License.rtf" /> <Media Id="1" Cabinet="Pathways.cab" EmbedCab="yes" /> <Upgrade Id="$(var.UpgradeCode)"> <UpgradeVersion OnlyDetect="no" Maximum="$(var.ProductVersion)" IncludeMaximum="no" Language="1033" Property="OLDAPPFOUND" /> <UpgradeVersion Minimum="$(var.ProductVersion)" IncludeMinimum="yes" OnlyDetect="no" Language="1033" Property="NEWAPPFOUND" /> </Upgrade> <!-- program files directory --> <Directory Id="ProgramFilesFolder"> <Directory Id="INSTALLDIR" Name="Pathways"/> </Directory> <!-- application data directory --> <Directory Id="CommonAppDataFolder" Name="CommonAppData"> <Directory Id="CommonAppDataPathways" Name="Pathways" /> </Directory> <!-- start menu program directory --> <Directory Id="ProgramMenuFolder"> <Directory Id="ProgramsMenuPathwaysFolder" Name="Pathways" /> </Directory> <!-- desktop directory --> <Directory Id="DesktopFolder" /> </Directory> <Icon Id="PathwaysIcon" SourceFile="\\Fileserver\Release\Pathways\Latest\Release\Pathways.exe" /> <!-- components in the reference to the install directory --> <DirectoryRef Id="INSTALLDIR"> <Component Id="Application" Guid="EEE4EB55-A515-4872-A4A5-06D6AB4A06A6"> <File Id="pathwaysExe" Name="Pathways.exe" DiskId="1" Source="\\Fileserver\Release\Pathways\Latest\Release\Pathways.exe" Vital="yes" KeyPath="yes" Assembly=".net" AssemblyApplication="pathwaysExe" AssemblyManifest="pathwaysExe"> <!--<netfx:NativeImage Id="ngen_Pathways.exe" Platform="32bit" Priority="2"/> --> </File> <File Id="pathwaysChm" Name="Pathways.chm" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\Pathways.chm" /> <File Id="publicKeyXml" ShortName="RSAPUBLI.XML" Name="RSAPublicKey.xml" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\RSAPublicKey.xml" Vital="yes" /> <File Id="staticListsXml" ShortName="STATICLI.XML" Name="StaticLists.xml" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\StaticLists.xml" Vital="yes" /> <File Id="axInteropMapPointDll" ShortName="AXMPOINT.DLL" Name="AxInterop.MapPoint.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\AxInterop.MapPoint.dll" Vital="yes" /> <File Id="interopMapPointDll" ShortName="INMPOINT.DLL" Name="Interop.MapPoint.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\Interop.MapPoint.dll" Vital="yes" /> <File Id="mapPointDll" ShortName="MAPPOINT.DLL" Name="MapPoint.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\Interop.MapPoint.dll" Vital="yes" /> <File Id="devExpressData63Dll" ShortName="DAAT63.DLL" Name="DevExpress.Data.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.Data.v6.3.dll" Vital="yes" /> <File Id="devExpressUtils63Dll" ShortName="UTILS63.DLL" Name="DevExpress.Utils.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.Utils.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraBars63Dll" ShortName="BARS63.DLL" Name="DevExpress.XtraBars.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraBars.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraNavBar63Dll" ShortName="NAVBAR63.DLL" Name="DevExpress.XtraNavBar.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraNavBar.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraCharts63Dll" ShortName="CHARTS63.DLL" Name="DevExpress.XtraCharts.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraCharts.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraEditors63Dll" ShortName="EDITOR63.DLL" Name="DevExpress.XtraEditors.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraEditors.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraPrinting63Dll" ShortName="PRINT63.DLL" Name="DevExpress.XtraPrinting.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraPrinting.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraReports63Dll" ShortName="REPORT63.DLL" Name="DevExpress.XtraReports.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraReports.v6.3.dll" Vital="yes" /> <File Id="devExpressXtraRichTextEdit63Dll" ShortName="RICHTE63.DLL" Name="DevExpress.XtraRichTextEdit.v6.3.dll" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\DevExpress.XtraRichTextEdit.v6.3.dll" Vital="yes" /> <RegistryValue Id="PathwaysInstallDir" Root="HKLM" Key="Software\Tribal Data Resources\Pathways" Name="InstallDir" Action="write" Type="string" Value="[INSTALLDIR]" /> </Component> </DirectoryRef> <!-- application data components --> <DirectoryRef Id="CommonAppDataPathways"> <Component Id="CommonAppDataPathwaysFolderComponent" Guid="087C6F14-E87E-4B57-A7FA-C03FC8488E0D"> <CreateFolder> <Permission User="Everyone" GenericAll="yes" /> </CreateFolder> <RemoveFolder Id="CommonAppDataPathways" On="uninstall" /> <RegistryValue Root="HKCU" Key="Software\TDR\Pathways" Name="installed" Type="integer" Value="1" KeyPath="yes" /> <File Id="settingsXml" ShortName="SETTINGS.XML" Name="Settings.xml" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\Settings\settings.xml" Vital="yes" /> </Component> <Component Id="Database" Guid="1D8756EF-FD6C-49BC-8400-299492E8C65D"> <File Id="pathwaysMdf" Name="Pathways.mdf" DiskId="1" Source="\\fileserver\Shared\Databases\Pathways\SystemDBs\Pathways.mdf" /> <RemoveFile Id="pathwaysLdf" ShortName="Pathways.ldf" Name="Pathways_log.LDF" On="uninstall" /> </Component> </DirectoryRef> <!-- shortcut components --> <DirectoryRef Id="DesktopFolder"> <Component Id="DesktopShortcutComponent" Guid="1BF412BA-9C6B-460D-80ED-8388AC66703F"> <Shortcut Id="DesktopShortcut" Target="[INSTALLDIR]Pathways.exe" Name="Pathways" Description="Pathways Tribal Directory" Icon="PathwaysIcon" Show="normal" WorkingDirectory="INSTALLDIR" /> <RegistryValue Root="HKCU" Key="Software\TDR\Pathways" Name="installed" Type="integer" Value="1" KeyPath="yes"/> </Component> </DirectoryRef> <DirectoryRef Id ="ProgramsMenuPathwaysFolder"> <Component Id="ProgramsMenuShortcutComponent" Guid="83A18245-4C22-4CDC-94E0-B480F80A407D"> <Shortcut Id="ProgramsMenuShortcut" Target="[INSTALLDIR]Pathways.exe" Name="Pathways" Icon="PathwaysIcon" Show="normal" WorkingDirectory="INSTALLDIR" /> <RemoveFolder Id="ProgramsMenuPathwaysFolder" On="uninstall"/> <RegistryValue Root="HKCU" Key="Software\TDR\Pathways" Name="installed" Type="integer" Value="1" KeyPath="yes"/> </Component> </DirectoryRef> <Feature Id="App" Title="Pathways Application" Level="1" Description="Pathways software" Display="expand" ConfigurableDirectory="INSTALLDIR" Absent="disallow" AllowAdvertise="no" InstallDefault="local"> <ComponentRef Id="Application" /> <ComponentRef Id="CommonAppDataPathwaysFolderComponent" /> <ComponentRef Id="ProgramsMenuShortcutComponent" /> <Feature Id="Shortcuts" Title="Desktop Shortcut" Level="1" Absent="allow" AllowAdvertise="no" InstallDefault="local"> <ComponentRef Id="DesktopShortcutComponent" /> </Feature> </Feature> <Feature Id="Data" Title="Database" Level="1" Absent="allow" AllowAdvertise="no" InstallDefault="local"> <ComponentRef Id="Database" /> </Feature> <!-- <UIRef Id="WixUI_Minimal" /> --> <UIRef Id ="WixUI_FeatureTree"/> <UIRef Id="WixUI_ErrorProgressText"/> <UI> <Error Id="2000">There is a later version of this program installed.</Error> </UI> <CustomAction Id="NewerVersionDetected" Error="2000" /> <InstallExecuteSequence> <RemoveExistingProducts After="InstallFinalize"/> </InstallExecuteSequence> </Product>

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  • Why user control with code behind file doesn't want to compile under MVC2?

    - by kyrisu
    I have user control in my MVC2 app placed in the Content folder (it's not supposed to be a view, just reusable part of the app). UserControl1.ascx looks like: <@ Control AutoEventWireup="true" Language="C#" CodeFile="~/Content/UserControl1.ascx.cs" Inherits="MVCDrill.Content.UserControl1" %> <div runat="server" id="mydiv"> <asp:LinkButton id="lb_text" runat="server"></asp:LinkButton> </div> UserControl1.ascx.cs looks like: using System; using System.Web; using System.Web.UI; namespace MVCDrill.Content { public class UserControl1 : UserControl { public string Text { get { return this.lb_text.Text; } set { this.lb_text.Text = value; } } } } I'm pretty sure this kind of stuff compiled under webforms but I'm getting compilation error: 'MVCDrill.Content.UserControl1' does not contain a definition for 'lb_text' and no extension method 'lb_text' accepting a first argument of type 'MVCDrill.Content.UserControl1' could be found (are you missing a using directive or an assembly reference?) Am I missing something? How to change it (what is the alternative) in MVC2 ? p.s. Intellisense sees lb_text with no problem. I've tried with different controls with the same outcome.

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  • How do I connect to a Java command-line tool with the YourKit Java Profiler?

    - by Daryl Spitzer
    I've build a command-line tool in Java, which I would now like to profile with YourKit. I launch the command-line tool with something like: $ java -classpath .:foo.bar.jar com.foobar.tools.TheTool arg1 arg2 arg3 It runs to completion in less than 2 seconds. After reading http://www.yourkit.com/docs/80/help/agent.jsp, I tried the following: $ java -agentpath:/home/dspitzer/yjp-8.0.24/bin/linux-x86-32/libyjpagent.so -classpath .:foo.bar.jar com.foobar.tools.TheTool arg1 arg2 arg3 ...and I get: [YourKit Java Profiler 8.0.24] JVMTI version 3001016d; 14.3-b01; Sun Microsystems Inc.; mixed mode, sharing; Linux; 32-bit JVM [YourKit Java Profiler 8.0.24] Profiler agent is listening on port 10001... [YourKit Java Profiler 8.0.24] *** HINT ***: To get profiling results, connect to the application from the profiler UI ... But I guess YourKit is designed to only connect to running application. How should I modify my command-line tool to allow connection from YourKit? I could add a command-line option that will have it pause for input, and I won't press return for it to continue until I've connected to it from YourKit. Is there a YourKit API that I could add to my tool that would cause it to block until I've connected with YourKit? Is there a YourKit API or a java command-line option that would create a profiling "snapshot" that I could load and analyze later (after the command-line tool has completed) with YourKit?

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  • MVC 2 Data annotations problem

    - by Louzzzzzz
    Hi. Going mad now. I have a MVC solution that i've upgraded from MVC 1 to 2. It all works fine.... except the Validation! Here's some code: In the controller: using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Security.Principal; using System.Web; using System.Web.Mvc; using System.Web.Security; using System.Web.UI; using MF.Services.Authentication; using System.ComponentModel; using System.ComponentModel.DataAnnotations; namespace MF.Controllers { //basic viewmodel public class LogOnViewData { [Required] public string UserName { get; set; } [Required] public string Password { get; set; } } [HandleError] public class AccountController : Controller { [HttpPost] public ActionResult LogOn(LogOnViewData lvd, string returnUrl) { if (ModelState.IsValid) { //do stuff - IsValid is always true } } } } The ModelState is always valid. The model is being populated correctly however. Therefore, if I leave both username and password blank, and post the form the model state is still valid. Argh! Extra info: using structure map for IoD. Previously, before upgrading to MVC 2 was using the MS data annotation library so had this in my global.asax.cs: ModelBinders.Binders.DefaultBinder = new Microsoft.Web.Mvc.DataAnnotations.DataAnnotationsModelBinder(); Have removed that now. I'm sure i'm doing something really basic and wrong. If someone could point it out that would be marvellous. Cheers

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  • Do overlays/tooltips work correctly in Emacs for Windows?

    - by Cheeso
    I'm using Flymake on C# code, emacs v22.2.1 on Windows. The Flymake stuff has been working well for me. For those who don't know, you can read an overview of flymake, but the quick story is that flymake repeatedly builds the source file you are currently working on in the background, for the purpose of doing syntax checking. It then highlights the compiler warnings and erros in the current buffer. Flymake didn't work for C# initially, but I "monkey-patched it" and it works nicely now. If you edit C# in emacs, I highly recommend using flymake. The only problem I have is with the UI. Flymake highlights the errors and warnings nicely, and then inserts "overlays" with the full error or warning text. IF I hover the mouse pointer over the highlighted line in code, the overlay pops up. But as you can see, the overlay (tooltip) is truncated, and it doesn't display correctly. Flymake seems to be doing the right thing, it's the overlay part that seems broken., and overlay seems to do the right thing. It's the tooltip that is displayed incorrectly. Do overlays tooltips work correctly in emacs for Windows? Where do I look to fix this?

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  • Android Apps not working in emulator

    - by Mohit Deshpande
    None of my apps work in the emulator. I am running Ubuntu 9.10 and everytime I try to access my UI, the app crashes. All I get is an "Sorry! The application ... has stopped unexpectedly". For EVERY app this happens. package com.mohit.helloandroid; import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.os.Bundle; import android.widget.TabHost; public class HelloAndroid extends TabActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); //Resource object to get drawables TabHost tabHost = getTabHost(); //The activity tabhost TabHost.TabSpec spec; //Reusable tab spec Intent intent; intent = new Intent().setClass(this, HelloAndroid.class); spec = tabHost.newTabSpec("artists").setIndicator("Artists", res .getDrawable(R.drawable.tab_artists)) .setContent(intent); tabHost.addTab(spec); } } I don't know how this code could possibly throw a message like that.

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  • ASP.NET: aggregating validators in a user control

    - by orsogufo
    I am developing a web application where I would like to perform a set of validations on a certain field (an account name in the specific case). I need to check that the value is not empty, matches a certain pattern and is not already used. I tried to create a UserControl that aggregates a RequiredFieldValidator, a RegexValidator and a CustomValidator, then I created a ControlToValidate property like this: public partial class AccountNameValidator : System.Web.UI.UserControl { public string ControlToValidate { get { return ViewState["ControlToValidate"] as string; } set { ViewState["ControlToValidate"] = value; AccountNameRequiredFieldValidator.ControlToValidate = value; AccountNameRegexValidator.ControlToValidate = value; AccountNameUniqueValidator.ControlToValidate = value; } } } However, if I insert the control on a page and set ControlToValidate to some control ID, when the page loads I get an error that says Unable to find control id 'AccountName' referenced by the 'ControlToValidate' property of 'AccountNameRequiredFieldValidator', which makes me think that the controls inside my UserControl cannot resolve correctly the controls in the parent page. So, I have two questions: 1) Is it possible to have validator controls inside a UserControl validate a control in the parent page? 2) Is it correct and good practice to "aggregate" multiple validator controls in a UserControl? If not, what is the standard way to proceed?

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  • problem getting info from a cookie with javascript

    - by Jason
    I am having an issue with my cookies and I can't figure it out. Basically I have it set up so it checks for the cookie to see if the user is logged in, and then displays either a welcome message or a login link. It works - except that instead of returning the persons name in the welcome message it just is blank where the name should be. The cookie is there, with all the appropriate info.. not sure what I am doing wrong. var itm = new Array(); itm[0] = findCookie("ui"); if (itm[0] == null) { document.write("<h2><a href='logreg.html'>Log In or Sign Up</a></h2>"); } else { var c1 = itm[0].indexOf(","); var c2 = itm[0].indexOf(",",c1); var c3 = itm[0].indexOf(",",c2); var gname = itm[0].substring(c2,c3); document.write("<h2>Welcome "+gname+"!</h2>"); } The findCookie function is.. function findCookie(val){ var cookie = null; var findVal = val + "="; var dc = document.cookie; if (dc.length > 0) { var start = dc.indexOf(findVal); if (start >= 0) { start += findVal.length; lastVal = dc.indexOf(";", start); if (lastVal == -1) { lastVal = dc.length; } cookie = (dc.substring(start, lastVal)); } else { return cookie; } } return cookie; }

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  • Spinner in Android crashing when visibilty changes while handling OnClick in a button

    - by Dave George
    I have a spinner in UI, which I want to hide when I handle onClick method for a button. But the application is crashing all the time. Is it that I can't use the setVisibility(View.Gone) on spinners (it is not written anywhere). If I comment it out, then application run fine. I am getting NullPointerException and I am using RelativeLayout. Also, can I do this: public void onItemSelected(AdapterView<?> arg0, View view, int pos, long arg3) { // TODO Auto-generated method stub Toast.makeText(SpinnerActivity.this,selected , Toast.LENGTH_SHORT).show(); spinner.setVisibility(View.GONE); } } Spinner code fore reference: itemsCity=getResources().getStringArray(R.array.cities_array); ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource( this, R.array.cities_array, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinnerCity.setAdapter(adapter); And here is Button code: private class BtClickListner implements View.OnClickListener{ @Override public void onClick(View v) { essEditText.setVisibility(View.GONE); spinnerCity.setEnabled(false);// Getting exception here // Also tried spinnerCity.setVisibility(View.GONE);// Exception SameBt.setVisibility(View.GONE);// This is same button for which I am handliing event, but it allows me to change tis property at run time. }

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  • When does a WPF adorner layer first become available?

    - by aoven
    I'm trying to add an overlay effect to my UserControl and I know that's what adorners are used for in WPF. But I'm a bit confused about how they supposedly work. I figured that adorner layer is implicitly handled by WPF runtime, and as such, should always be available. But when I create an instance of my UserControl in code, there is no adorner layer there. The following code fails with exception: var view = new MyUserControl(); var target = view.GetAdornerTarget(); // This returns a specific UI control. var layer = AdornerLayer.GetAdornerLayer(target); if (layer == null) { throw new Exception("No adorner layer at the moment."); } Can someone please explain to me, how this is supposed to work? Do I need to place the UserControl instance into a top-level Window first? Or do I need to define the layer myself somehow? Digging through documentation got me nowhere. Thank you!

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  • Setting article properties for a publication using RMO in C# .NET

    - by Pavan Kumar
    I am using transaction replication with push subscription. I am developing a UI for replication using RMO in C#.NET between different instances of the same database within same machine holding similar schema and structure. I am using Single subscriber and multiple publisher topology. During creation of publication i want to set a few article properties such as Keep the existing object unchanged ,allow schema changes at subscriber to false a,copy foriegn key constarint and copy check constraints to true. How do i set the article properties using RMO in C# .NET. I am using Visual Studio 2008 SP1.I also want to know as how we can select all the objects including Tables,Views,Stored Procedures for publishing at one stretch. I could do it for one table but i want to select all the tables at one stretch. This is the code snippet i used for selecting single table for publishing. TransArticle ta = new TransArticle(); ta.Name = "Article_1"; ta.PublicationName = "TransReplication_DB2"; ta.DatabaseName = "DB2"; ta.SourceObjectName = "person"; ta.SourceObjectOwner = "dbo"; ta.ConnectionContext = conn; ta.Create();

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  • Java Playing Cards Game Framework

    - by isme
    My friends and I at uni love playing Shithead into the wee hours. But soon we graduate and will leave town, so probably won't get together for a game for a while. I want to develop a Java app we can use to play Shithead and our other favorites over a network. An app like this already exists, but is ugly, buggy and does not support our house rules. The source is available, but is such a mess that I would really rather start from scratch than try to refactor it! Building my game using some standard playing card api or framework, if such a thing exists, would be better than starting from scratch. The answer to a similar SO question was to use the JPC-API, which allegedly provides basic playing card services and rendering. But this Sourceforge project currently makes available no files or source code! Is there an alternative, or somewhere else to find this framework? Soon I will need help with the following as well: Lobby services (finding other players) Gaming network protocol (to communicate moves between players) Gaming theory (to write the computer opponent) Winning condition detection Game UI development

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  • Android: how to tell if a view is scrolling

    - by Dave
    in iPhone, this would be simple---each view has a scrollViewDidScroll method. I am trying to find the equivalent in Android. My code works, but it isn't giving me what I want. I need to execute code the entire duration that a view is scrolling. So, even though I use OnGestureListener's onScroll method, it only fires when the finger is on the screen (it's not really named correctly---it should be called "onSlide" or "onSwipe", focusing on the gesture rather than the UI animation). It does not continue to fire if the user flicks the view and it is still scrolling for a few moments after the user lifts his finger. is there a method that is called at every step of the scroll? public class Scroll extends Activity implements OnGestureListener { public WebView webview; public GestureDetector gestureScanner; public int currentYPosition; public int lastYPosition; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); webview = new WebView(this); setContentView(webview); webview.loadUrl("file:///android_asset/Scroll.html"); gestureScanner = new GestureDetector(this); currentYPosition = 0; lastYPosition = 0; } public boolean onTouchEvent(final MotionEvent me) { return gestureScanner.onTouchEvent(me); } public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { // I do stuff here. return true; }

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  • update variable based upon results from .NET backgroundworker

    - by Bruce
    I've got a C# program that talks to an instrument (spectrum analyzer) over a network. I need to be able to change a large number of parameters in the instrument and read them back into my program. I want to use backgroundworker to do the actual talking to the instrument so that UI performance doesn't suffer. The way this works is - 1) send command to the instrument with new parameter value, 2) read parameter back from the instrument so I can see what actually happened (for example, I try to set the center frequency above the max that the instrument will handle and it tells me what it will actually handle), and 3) update a program variable with the actual value received from the instrument. Because there are quite a few parameters to be updated I'd like to use a generic routine. The part I can't seem to get my brain around is updating the variable in my code with what comes back from the instrument via backgroundworker. If I used a separate RunWorkerCompleted event for each parameter I could hardwire the update directly to the variable. I'd like to come up with a way of using a single routine that's capable of updating any of the variables. All I can come up with is passing a reference number (different for each parameter) and using a switch statement in the RunWorkerCompleted handler to direct the result. There has to be a better way.

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