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  • HttpContext returning only "/"

    - by user281180
    I have the following two lines of codes in my model, however, both virtual and path have values "\". Where have I gone wrong? var virtual = VirtualPathUtility.ToAbsolute(HttpContext.Current.Request.ApplicationPath); var path =HttpContext.Current.Request.ApplicationPath;

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  • WPF/INotifyPropertyChanged, change the value of txtA, the txtB and txtC should change automatically?

    - by user1033098
    I supposed, once i change the value of txtA, the txtB and txtC would change automatically, since i have implemented INotifyPropertyChanged for ValueA. But they were not updated on UI. txtB was always 100, and txtC was always -50. I don't know what's the reason. My Xaml.. <Window x:Class="WpfApplicationReviewDemo.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <StackPanel> <TextBox Name="txtA" Text="{Binding ValueA}" /> <TextBox Name="txtB" Text="{Binding ValueB}" /> <TextBox Name="txtC" Text="{Binding ValueC}" /> </StackPanel> </Window> My code behind... public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); this.DataContext = new Model(); } } public class Model : INotifyPropertyChanged { private decimal valueA; public decimal ValueA { get { return valueA; } set { valueA = value; PropertyChanged(this, new PropertyChangedEventArgs("ValueA")); } } private decimal valueB; public decimal ValueB { get { valueB = ValueA + 100; return valueB; } set { valueB = value; PropertyChanged(this, new PropertyChangedEventArgs("ValueB")); } } private decimal valueC; public decimal ValueC { get { valueC = ValueA - 50; return valueC; } set { valueC = value; PropertyChanged(this, new PropertyChangedEventArgs("ValueC")); } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion } After i add code to the set method of ValueA property, it works. public decimal ValueA { get { return valueA; } set { valueA = value; PropertyChanged(this, new PropertyChangedEventArgs("ValueA")); PropertyChanged(this, new PropertyChangedEventArgs("ValueB")); PropertyChanged(this, new PropertyChangedEventArgs("ValueC")); } } But I supposed it should be automatically refresh/updated for txtB and txtC. Please advise.

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  • How to create a Link that supplies its own Markup?

    - by Aranian
    I'm trying to create a link that will hide or show a part of my page. The link should be reusable and display one of two images, depending on state. Adding the two subcomponents on every page where I use the link is kind of clunky so I wanted to create a component that behaves like a link while automatically adding its content. This is the Link component: public class ToggleVisibilityLink extends AjaxFallbackLink<Boolean> { public ToggleVisibilityLink(final String id, final IModel<Boolean> model) { super(id, model); setOutputMarkupId(true); add(new Image("collapseImage") { @Override public boolean isVisible() { return !getModelObject(); } }); add(new Image("expandImage") { @Override public boolean isVisible() { return getModelObject(); } }); } @Override public void onClick(final AjaxRequestTarget target) { setModelObject(!getModelObject()); if (target != null) { target.add(this); send(this.getParent(), Broadcast.EXACT, target); } } } And this is how I currently use it in HTML (this is added to the page or panel where I use the link): <a href="#" wicket:id="collapseExpandLink" class="collapseExpandLink"> <wicket:link> <img src="collapse.png" wicket:id="collapseImage" class="collapseExpandImage collapse"> </wicket:link> <wicket:link> <img src="expand.png" wicket:id="expandImage" class="collapseExpandImage expand"> </wicket:link> </a> And the corresponding Java call: add(new ToggleVisibilityLink("collapseExpandLink", new PropertyModel(this, "hidden"))); But I want to be able to skip the body inside the link as one would have to know about the internals of ToggleVisibilityLink. I experimented with IMarkupResourceStreamProvider, using Dynamic markup in Wicket as a starting point. By googling I found another example where the poster was only able to get that to work when using a Panel, and I was able to do that as well. But I'd really like to keep the link and not package it inside a Panel, as I would not be able to style the link in the markup. I'm also open to alternatives to encapsulate the link and its body.

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  • nonparametric regression method using R

    - by user1782652
    I need to find the certain driver variables for unit sales & their impact on sales. My data is such data the error does not follow normal distribution & the unit sales is also not following any particular statistical distribution. Given such condition, it is difficult for me to use simple liner regression or GLM. Can any of you please suggest me some non parametric regression technique which I can use in R to model the relationship? Thanks,

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  • acts_as_list with has_and_belongs_to_many relationship

    - by mculp
    I've found an old plugin called acts_as_habtm_list - but it's for Rails 1.0.0. Is this functionality built in acts_as_list now? I can't seem to find any information on it. Basically, I have an artists_events table - no model. The relationship is handled through those two models specifying :has_and_belongs_to_many How can I specify order in this situation?

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  • Migrating Application Configuration from Windows Registry to SQLite

    - by baris_a
    Currently, I am working on the migration mentioned in the title line. Problem is application configuration that is kept in registry has a tree like structure, for example: X |->Y |->Z |->SomeKey someValue W |->AnotherKey anotherValue and so on. How can I model this structure in SQLite (or any other DB)? If you have experience in similar problems, please send posts. Thanks in advance.

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  • Entity Framework: An object with the same key already exists in the objectstatemanager

    - by NealR
    I see that this question has been asked a lot, however I haven't found anything yet that solves the problem I'm having. Obviously i'm using the Entity Framework to perform an update to a record. Once the updates are complete, however, whenever I try to save I get the following error message: An object with the same key already exists in the objectstatemanager At first I was passing in a collection object from the view that contained a copy of the the ZipCodeTerritory model object zipToUpdate. I changed the code by pulling this object out and just sending in the relevant fields instead. However, I'm still getting the same error. What's also weird is the first time I run this code, it works fine. Any attempt after that I get the error. Controller Here is the code from the method calling the edit function public static string DescriptionOnly(ZipCodeIndex updateZip) { if (!string.IsNullOrWhiteSpace(updateZip.newEffectiveDate) || !string.IsNullOrWhiteSpace(updateZip.newEndDate)) { return "Neither effective or end date can be present if updating Territory Code only; "; } _updated = 0; foreach (var zipCode in updateZip.displayForPaging.Where(x => x.Update)) { ProcessAllChanges(zipCode, updateZip.newTerritory, updateZip.newStateCode, updateZip.newDescription, updateZip.newChannelCode); } _msg += _updated + " record(s) updated; "; return _msg; } And here is the method that actually does the updating. private static void ProcessAllChanges(ZipCodeTerritory zipToUpdate, string newTerritory, string newStateCode, string newDescription, string newChannelCode) { try { if (!string.IsNullOrWhiteSpace(newTerritory)) zipToUpdate.IndDistrnId = newTerritory; if (!string.IsNullOrWhiteSpace(newStateCode)) zipToUpdate.StateCode = newStateCode; if (!string.IsNullOrWhiteSpace(newDescription)) zipToUpdate.DrmTerrDesc = newDescription; if (!string.IsNullOrWhiteSpace(newChannelCode)) zipToUpdate.ChannelCode = newChannelCode; if (zipToUpdate.EndDate == DateTime.MinValue) zipToUpdate.EndDate = DateTime.MaxValue; _db.Entry(zipToUpdate).State = EntityState.Modified; _db.SaveChanges(); _updated++; } catch (DbEntityValidationException dbEx) { _msg += "Error during update; "; EventLog.WriteEntry("Monet", "Error during ProcessAllChanges: " + zipToUpdate.ToString() + " |EX| " + dbEx.Message); } catch (Exception ex) { _msg += "Error during update; "; EventLog.WriteEntry("Monet", "Error during ProcessAllChanges: " + zipToUpdate.ToString() + " |MESSAGE| " + ex.Message); } } EDIT The ZipCodeIndex object contains a list of ZipCodeTerritory model objects. These aren't being pulled from a linq query, but instead simply passed back to the controller from the view. Here is the signature of the controller method that starts the process: [HttpPost] public ActionResult Update(ZipCodeIndex updateZip, string button)

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  • Selecting favourites from DB rails 3

    - by Richlewis
    I have a small app which has Users, Recipes, Ingredients and preparation models A user has many recipes, recipes belong to user and ingredients/preparation belongs to recipes. Now a user can view all recipes but I would like the option to add the particular recipe to a favourites list. Would I need to set a new DB to hold this and then link by associations or could I add a column to the recipe model called fav for example? Im looking for the best practice here or if someone has done this before and can offer any advice that would be appreciated

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  • Dynamically generating method names in rails

    - by badnaam
    I need to generate links in my views using the url helpers such as user_path(@user), the catch is, in some cases I don't know what model I am creating this link for i.e. whether it is a user or a store or someting else I would like to be able to determine this on the fly and call the appropriate view helper, currently I am doing the following, but I am wondering if there is a drier way of doing it. if object.class == "Store" store_path(object) elsif object.class == "User" user_path(object) ...etc

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  • Java Spring MVC partial views

    - by Tim
    I'm learning Spring MVC at the moment and comparing it to ASP .NET MVC. Is there a way to use partial views in java (like .ascx partials in ASP .NET MVC), so i can associate it with action method of some controller and pass model data to it.

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  • Aside from a prototype, what is the next best thing to satisfy a user

    - by user1639998
    Aside from a prototype, what is the next best thing to satisfy a user who really wants to know what an application will be like? Choice 1 A process model Choice 2 An interaction diagram Choice 3 A data-flow diagram Choice 4 A class diagram Choice 5 A class-state diagram 2 is my partner's choice 3 is my choice I stick to my colors also he stick to his. which one is better?

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  • How to detect GUI thread on Android?

    - by ParDroid
    Is there a robust way to detect if Thread.currentThread() is the Android system GUI-thread in an application? I would like to put some asserts in my model code that asserts that only one thread (eg the gui-thread) accesses my state, to assure that no kind of synchronization is neccesary.

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  • Rails Association Question...

    - by keruilin
    I have three models: User, RaceWeek, Race # Current associations: User has_many race_weeks; RaceWeek belongs to user; RaceWeek has many races; Race belongs to RaceWeek # So the user_id is a foreign key in RaceWeek and race_week_id is a foreign key in Race. # fastest_time is an attribute of the Race model. # QUESTION: What's the optimal way to retrieve a list of users who have the top X fastest race times?

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