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  • How to bind Listbox to two properties?

    - by Gabriel
    I have in Silverlight a Grid with DataContext set to class ViewModel. ViewModel contains list of items (each of them containing int ID and string Text) and an integer "ID", which identifies actually active item (not selected item). I would like to construct xaml with ListBox where activated item has another color. How can I do it?

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  • Chrome not displaying a div

    - by Kyle Sevenoaks
    Click here to see a simple example of what I want. It's really easy, but for some reason Google won't display the "subTotalCaption2" div. It's part of a foreach loop, if needed I can add other codes. There is nothing else in the rest of the css to mess with this, I have checked about 10 times. See it live at euroworker.no/order (add items to basket) In FF and Chrome. Thanks.

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  • When would I want to model a class with a private ctor?

    - by dotnetdev
    Hi, I've seen plenty of classes in .NET which have private constructor (Stream is one of them I think). When would I want to model a class like this? I keep thinking that if my class has no internal state/fields, then I can make it have a private constructor. Am I on the right track with this idea? I can understand the use of a factory (I've run into the tipping point a few times), but not with a private constructor class. Thanks

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  • What list of words can be used in commit messages after fixing a bug?

    - by mkafkas
    I am currently working on a senior project on software engineering and implementing a defect prediction mechanism in software projects which use version control system. Therefore, i want to ask the community about their commit message procedures. Which words in the commit messages may infer "bug fixed" meaning? So that, i can understand that the modified files in that revision was in a buggy state?

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  • A viewmodel's role beyond databinding?

    - by DeanMc
    I'm a bit confused as to what a viewmodel's role is beyond databinding. I have a menu built in silverlight. The menu has x number of menu items which is determined at runtime. One of the features I would like to add to this is that each menuitem has a different text colour when hovered over. Is it the role of the view to have a colour selector method or should the view handle this in it's code behind?

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  • Translating a C# WCF app into Visual Basic

    - by MikeG
    I'm trying to write a simple/small Windows Communication Foundation service application in Visual Basic (but I am very novice in VB) and all the good examples I've found on the net are written in C#. So far I've gotten my WCF service application working but now I'm trying to add callback functionality and the program has gotten more complicated. In the C# example code I understand how everything works but I am having trouble translating into VB the portion of code that uses a delegate. Can someone please show the VB equivalent? Here is the C# code sample I'm using for reference: namespace WCFCallbacks { using System; using System.ServiceModel; [ServiceContract(CallbackContract = typeof(IMessageCallback))] public interface IMessage { [OperationContract] void AddMessage(string message); [OperationContract] bool Subscribe(); [OperationContract] bool Unsubscribe(); } interface IMessageCallback { [OperationContract(IsOneWay = true)] void OnMessageAdded(string message, DateTime timestamp); } } namespace WCFCallbacks { using System; using System.Collections.Generic; using System.ServiceModel; public class MessageService : IMessage { private static readonly List<IMessageCallback> subscribers = new List<IMessageCallback>(); //The code in this AddMessage method is what I'd like to see re-written in VB... public void AddMessage(string message) { subscribers.ForEach(delegate(IMessageCallback callback) { if (((ICommunicationObject)callback).State == CommunicationState.Opened) { callback.OnMessageAdded(message, DateTime.Now); } else { subscribers.Remove(callback); } }); } public bool Subscribe() { try { IMessageCallback callback = OperationContext.Current.GetCallbackChannel<IMessageCallback>(); if (!subscribers.Contains(callback)) subscribers.Add(callback); return true; } catch { return false; } } public bool Unsubscribe() { try { IMessageCallback callback = OperationContext.Current.GetCallbackChannel<IMessageCallback>(); if (!subscribers.Contains(callback)) subscribers.Remove(callback); return true; } catch { return false; } } } } I was thinking I could do something like this but I don't know how to pass the message string from AddMessage to DoSomething... Dim subscribers As New List(Of IMessageCallback) Public Sub AddMessage(ByVal message As String) Implements IMessage.AddMessage Dim action As Action(Of IMessageCallback) action = AddressOf DoSomething subscribers.ForEach(action) 'Or this instead of the above three lines: 'subscribers.ForEach(AddressOf DoSomething) End Sub Public Sub DoSomething(ByVal callback As IMessageCallback) 'I am also confused by: '((ICommunicationObject)callback).State 'Is that casting the callback object as type ICommunicationObject? 'How is that done in VB? End Sub

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  • Copy information only, from an external webpage and import it into a form using PHP

    - by mpw5013
    I'm looking to extract key pieces of information from the following website to simplify the signup process. More or less I want to build a quick import script that will grab the following: 1) Username 2) Type (Model / Photographer) 3) Age 4) Sex 5) City, State, Zip 6) Email 7) Photos I will then take all of this data and add it to join form / push the photos through a manipulation script. Any ideas?

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  • flash button inside a button

    - by user164142
    I have a button containing 2 child buttons. I want to be able to keep the mouse over state active, when I rollover a child button. At present it fires mouse out when i rollover a child button, I suspect this is correct, but not what I want to happen. Any ideas how to get around this?

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  • Perl, foreach order

    - by Mike
    Does Perl's foreach loop operator require that the list items be presented in order? For example my @a=(1,2,3); foreach my $item (@a) { print $item; } will always print 1 2 3? I suspect so, but I can't find it documented.

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  • List Box Multiple Selection Problem

    - by rupeshmalviya
    Hello Friends I am using a list box control in aspx page i have set multiple selection property to true, but when i try to select more than one item it does not select multiple items, it selects one only do i have to do something programatically here is my code on code behind nothing ...i want why it is not selecting more than one item's .. i am using namespace using System.Web.UI.WebControls; as well but of no avail..

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  • VirtualStringTree hide node(s)

    - by michal
    Hi, is that possible to hide specific nodes in VirtualStringTree? I'm implementing "filtering" feature (the VST acts as a list with columns), and I'd like to avoid reloading content each time the filter is changed - instead, much faster would be to tell VST not to render specific items ... any solutions?

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  • What's wrong with this UPDATE FROM using a case statement?

    - by Blankman
    update p set p.storePrice = CASE WHEN p.costPrice BETWEEN 0.00 AND 1.00 THEN p.costPrice * 1.0 CASE WHEN p.costPrice BETWEEN 0.00 AND 1.00 THEN p.costPrice * 1.0 ELSE p.msrpPrice END FROM product p WHERE p.type = 1 The error says: Msg 156, Level 15, State 1, Line 9 Incorrect syntax near the keyword 'CASE'. I can't seem to see any issue with the sql?

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  • Concatenate a table name from a variable in a FROM clause

    - by idieeasy
    I'm trying to use a dynamically generated fully-qualified table name in sql server 2008. For example, this does not work: select max([id]) from @dbName+N'.[T1]' This will give an error like: Msg 102, Level 15, State 1, Line 73 Incorrect syntax near '+'. I know that something like this works: declare @qualifiedTable varchar(200) = @dbName+N'.[T1]' select max([id]) from @qualifiedTable But I have to do this LOTS of times so I would really like to do it in line. Is it possible?

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  • Android menu view, gridview or something else?

    - by dfilkovi
    I need to create a home screen (menu) with four to six items arranged in a grid view, each item needs to have an icon and a text below the icon. I googled and everything I could find were adapterView examples, with dynamic menu loading, and I want to make it with static xml, this view will not change so no need for dynamic code. Can anyone post an xml example of this?

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  • Downsides to immutable objects in Java?

    - by parkr
    The advantages of immutable objects in Java seem clear: consistent state automatic thread safety simplicity You can favour immutability by using private final fields and constructor injection. But, what are the downsides to favouring immutable objects in Java? i.e. incompatibility with ORM or web presentation tools? Inflexible design? Implementation complexities? Is it possible to design a large-scale system (deep object graph) that predominately uses immutable objects?

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  • efficiently convert string (or tuple) to ctypes array

    - by Mu Mind
    I've got code that takes a PIL image and converts it to a ctypes array to pass out to a C function: w_px, h_px = img.size pixels = struct.unpack('%dI'%(w_px*h_px), img.convert('RGBA').tostring()) pixels_array = (ctypes.c_int * len(pixels))(*pixels) But I'm dealing with big images, and unpacking that many items into function arguments seems to be noticeably slow. What's the simplest thing I can do to get a reasonable speedup? I'm only converting to a tuple as an intermediate step, so if it's unnecessary, all the better.

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  • SQL Server 2005: Why would a delete from a temp table hang forever?

    - by Dr. Zim
    DELETE FROM #tItem_ID WHERE #tItem_ID.Item_ID NOT IN (SELECT DISTINCT Item_ID FROM Item_Keyword JOIN Keyword ON Item_Keyword.Keyword_ID = Keyword.Record_ID WHERE Keyword LIKE @tmpKW) The Keyword is %macaroni%. Both temp tables are 3300 items long. The inner select executes in under a second. All strings are nvarchar(249). All IDs are int. Any ideas? I executed it (it's in a stored proc) for over 12 minutes without it finishing.

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  • How to gather arbitrary length list data in ASP.NET MVC.

    - by C. Ross
    I need to gather a list of items associated with another item from my user in a ASP.NET MVC project. I would like to have a controller action like bellow. [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(int x, int y, IEnumerable<int> zKeys) { //Do stuff here } How can I setup my form to pass data in this way? If data of this particular form can't be provided, what's the next best way to pass this type of information in ASP.NET MVC?

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  • Usage Tracking for Windows desktop applications ...

    - by sdaas
    Hi, I am looking for some frameworks that can be used to collect usage information for Windows desktop application and analyze it. For example, I would like to be able to answer questions like (a) how many times do people use this application in a day (b) which are their favorite menu items, etc. I looked briefly at Google Analytics and Omniture SiteCatalyst but they seem to work only on web applications. Thanks SD

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