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  • class __init__ (not instance __init__)

    - by wallacoloo
    Here's a very simple example of what I'm trying to get around: class Test(object): some_dict = {Test: True} The problem is that I cannot refer to Test while it's still being defined Normally, I'd just do this: class Test(object): def __init__(self): self.__class__.some_dict = {Test: True} But I never create an instance of this class. It's really just a container to hold a group of related functions and data (I have several of these classes, and I pass around references to them, so it is necessary for Test to be it's own class) So my question is, how could I refer to Test while it's being defined, or is there something similar to __init__ that get's called as soon as the class is defined? If possible, I want self.some_dict = {Test: True} to remain inside the class definition. This is the only way I know how to do this so far: class Test(object): @classmethod def class_init(cls): cls.some_dict = {Test: True} Test.class_init()

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  • Getting multiple checkboxes from FormCollection element

    - by FreshCode
    Given multiple HTML checkboxes: <input type="checkbox" name="catIDs" value="1" /> <input type="checkbox" name="catIDs" value="2" /> ... <input type="checkbox" name="catIDs" value="100" /> How do I retrive an array of integers from a FormCollection in an action: public ActionResult Edit(FormCollection form) { int [] catIDs = (IEnumerable<int>)form["catIDs"]; // ??? // alternatively: foreach (int catID in form["catIDs"] as *SOME CAST*) { // ... } return View(); } Note: I read the related questions and I don't want to change my action parameters, eg. Edit(int [] catIDs).

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  • Why Html.DropDownListFor requires extra cast?

    - by dcompiled
    In my controller I create a list of SelectListItems and store this in the ViewData. When I read the ViewData in my View it gives me an error about incorrect types. If I manually cast the types it works but seems like this should happen automatically. Can someone explain? Controller: enum TitleEnum { Mr, Ms, Mrs, Dr }; var titles = new List<SelectListItem>(); foreach(var t in Enum.GetValues(typeof(TitleEnum))) titles.Add(new SelectListItem() { Value = t.ToString(), Text = t.ToString() }); ViewData["TitleList"] = titles; View: // Doesn't work Html.DropDownListFor(x => x.Title, ViewData["TitleList"]) // This Works Html.DropDownListFor(x => x.Title, (List<SelectListItem>) ViewData["TitleList"])

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  • How to use JTA support in Tomcat 6 for Hibernate ?

    - by EugeneP
    They recommend using JTA transaction support in JEE environment. But how to configure JTA in Tomcat6 so that Hibernate Session could use it ? Starting with version 3.0.1, Hibernate added the SessionFactory.getCurrentSession() method. Initially, this assumed usage of JTA transactions, where the JTA transaction defined both the scope and context of a current session. Given the maturity of the numerous stand-alone JTA TransactionManager implementations, most, if not all, applications should be using JTA transaction management, whether or not they are deployed into a J2EE container. Based on that, the JTA-based contextual sessions are all you need to use.

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  • Generic method to create deep copy of all elements in a collection

    - by bwarner
    I have various ObservableCollections of different object types. I'd like to write a single method that will take a collection of any of these object types and return a new collection where each element is a deep copy of elements in the given collection. Here is an example for a specifc class private static ObservableCollection<PropertyValueRow> DeepCopy(ObservableCollection<PropertyValueRow> list) { ObservableCollection<PropertyValueRow> newList = new ObservableCollection<PropertyValueRow>(); foreach (PropertyValueRow rec in list) { newList.Add((PropertyValueRow)rec.Clone()); } return newList; } How can I make this method generic for any class which implements ICloneable?

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  • UltraWebGrid: How to use a drop-down list in a column

    - by Crossbrowser
    I'm using the Infragistics grid and I'm having a difficult time using a drop-down list as the value selector for one of my columns. I tried reading the documentation but Infragistics' documentation is not so good. I've also taken a look at this discussion with no luck. What I'm doing so far: col.Type = ColumnType.DropDownList; col.DataType = "System.String"; col.ValueList = myValueList; where myValueList is: ValueList myValueList = new ValueList(); myValueList.Prompt = "My text prompt"; myValueList.DisplayStyle = ValueListDisplayStyle.DisplayText; foreach(MyObjectType item in MyObjectTypeCollection) { myValueList.ValueItems.Add(item.ID, item.Text); // Note that the ID is a string (not my design) } When I look at the page, I expect to see a drop-down list in the cells for this column, but my columns are empty.

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  • sqlite - any improvements for this attach code (running multiple sql commands transactionally in sql

    - by Greg
    Hi, Is this code solid? I've tried to use "using" etc. Basically a method to pass as sequenced list of SQL commands to be run against a Sqlite database. I assume it is true that in sqlite by default all commands run in a single connection are handled transactionally? Is this true? i.e. I should not have to (and haven't got in the code at the moment) a BeginTransaction, or CommitTransaction. It's using http://sqlite.phxsoftware.com/ as the sqlite ADO.net database provider. private int ExecuteNonQueryTransactionally(List<string> sqlList) { int totalRowsUpdated = 0; using (var conn = new SQLiteConnection(_connectionString)) { // Open connection (one connection so should be transactional - confirm) conn.Open(); // Apply each SQL statement passed in to sqlList foreach (string s in sqlList) { using (var cmd = new SQLiteCommand(conn)) { cmd.CommandText = s; totalRowsUpdated = totalRowsUpdated + cmd.ExecuteNonQuery(); } } } return totalRowsUpdated; }

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  • Updating multiple Sprites - AS3 performance best practices

    - by dani
    Within the container "BubbleContainer" I have multiple "Bubble sprites". Each bubble's graphics object (a circle) is updated on a timer event. Let's say I have 50 Bubble sprites and each circle's radius should be updated with a mathematical formula. How do I organize this logic? How do I update all Bubble sprites within the BubbleContainer? (should I call a bubble.update() function or make a temporary reference to the graphics object?) Where do I put the Math logic? (as static functions?)

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  • Dependency Injection with Custom Membership Provider

    - by alastairs
    I have an ASP.NET MVC web application that implements a custom membership provider. The custom membership provider takes a UserRepository to its constructor that provides an interface between the membership provider and NHibernate. The UserRepository is provided by the Ninject IoC container. Obviously, however, this doesn't work when the provider is instantiated by .NET: the parameterless constructor does not have a UserRepository and cannot create one (the UserRepository requires an NHibernate session be passed to its constructor), which then means that the provider cannot access its data store. How can I resolve my object dependency? It's probably worth noting that this is an existing application that has been retrofitted with Ninject. Previously I used parameterless constructors that were able to create their required dependencies in conjunction with the parametered constructors to assist unit testing. Any thoughts, or have I built myself into a corner here?

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  • tablesorter pager initial pagination

    - by vikitor
    Hi, This might sound like a very stupid question to some of you, but I assure you I've been checking through the internet and I haven't had any luck about this. My question is: is it possible to set an initial pagination number in the tablesorter pager plugin? By default it takes the 10 option, but I've tried to put a 5 as the selected option and it loads 10 anyway. If I change it and come back to the 5 it will load as said, 5, but not at the beggining. Is there any option when loading the tablesorter? My code for the tablesorter is this: $("#TST").tablesorter({ headers: { 0: { sorter: false }, 4: { sorter: false }, 5: { sorter: false }, 6: { sorter: false} }, sortList: [[1, 0], [2, 0], [3, 0]], widgets: ['zebra'] }) .tablesorterPager({ container: $("#TSTPager"), positionFixed: false //, //pagesize: 5 }); the pagesize attribute I wrote in the tablesorterPager was a test, but it doesn't do what I want it to.

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  • LibraryContainer in a ScatterViewItem: resizing and background rectangle...

    - by Rob Fleming
    Simple one: Want to add a LibraryContainer to a Surface ScatterView. Know I have to add the container inside a ScatterViewItem to get the rotate/move features.. but the SVI adds a rectangle box around the control, and it does not size correctly. Think I'm missing something simple but can't figure it... My current XAML is as follows: Background="{StaticResource WindowBackground}" AllowDrop="True" . . . Any thoughts are appreciated... I've been looking at the how-to samples but the library controls that are shown are static item. (ie they are not movable)... Rob

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  • ASP.NET MVC How to convert ModelState errors to json

    - by JK
    How do you get a list of all ModelState error messages? I found this code to get all the keys: ( http://stackoverflow.com/questions/888521/returning-a-list-of-keys-with-modelstate-errors) var errorKeys = (from item in ModelState where item.Value.Errors.Any() select item.Key).ToList(); But how would I get the error messages as a IList or IQueryable? I could go: foreach (var key in errorKeys) { string msg = ModelState[error].Errors[0].ErrorMessage; errorList.Add(msg); } But thats doing it manually - surely there is a way to do it using LINQ? The .ErrorMessage property is so far down the chain that I don't know how to write the LINQ...

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  • can not get jplayer plugin to work

    - by Richard
    Hello, I hope somebody has some experience with the jplayer plugin I have been staring at the sourcecode of the demo's and looking in firebug, but I can't see why it is not showing at all. It also try's to use the flash file, but in other examples the embed code does not show up in the container div either. How could I get this to work, or debug? $(document).ready(function(){ $("#jpId").jPlayer( { ready: function () { this.element.jPlayer("setFile", "/mp3/nobodymove.mp3"); // Defines the mp3 } }); }); thanks, Richard

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  • Membership.GetUser() within TransactionScope throws TransactionAbortedException

    - by Bob Kaufman
    The following code throws a TransactionAbortedException with message "The transaction has aborted": using ( MyDataContext context = new MyDataContext() ) { using ( TransactionScope transactionScope = new TransactionScope() ) { Guid accountID = new Guid( Request.QueryString[ "aid" ] ); Account account = ( from a in context.Accounts where a.UniqueID.Equals( accountID ) select a ).SingleOrDefault(); IQueryable < My_Data_Access_Layer.Login > loginList = from l in context.Logins where l.AccountID == account.AccountID select l; foreach ( My_Data_Access_Layer.Login login in loginList ) { MembershipUser membershipUser = Membership.GetUser( login.UniqueID ); } } } The error occurs at the call to Membership.GetUser(). My Connection String is: <add name="MyConnectionString" connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=MyDatabase;Integrated Security=True" providerName="System.Data.SqlClient" /> Everything I've read tells me that TransactionScope should just get magically applied to the Membership calls. The user exists (I'd expect a null return otherwise.)

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  • PerformanceCounters on .NET 4.0 & Windows 7

    - by scott
    I have a program that works fine on VS2008 and Vista, but I'm trying it on Windows 7 and VS2010 / .NET Framework 4.0 and it's not working. Ultimately the problem is that System.Diagnostics.PerformanceCounterCategory.GetCategories() (and other PerformanceCounterCategory methods) is not working. I'm getting a System.InvalidOperationException with the message "Cannot load Counter Name data because an invalid index '' was read from the registry." I can reproduce this with the very simple program shown below: class Program { static void Main(string[] args) { foreach (var pc in System.Diagnostics.PerformanceCounterCategory.GetCategories()) { Console.WriteLine(pc.CategoryName); } } } I did make sure I'm running the program as an admin. It doesn't matter if I run it with VS/Debugger attached or not. I don't have another machine with Windows 7 or VS2010 to test it on, so I'm not sure which is complicating things here (or both?). It is Windows 7 x64 and I've tried forcing the app to run in both x32 and x64 but get the same results.

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  • Nested DataPagers problem

    - by diamandiev
    Sample code <asp:Repeater> <ItemTemplate> <asp:ListView DataSource=<%# Container.DataItem.Items %> ... /> <asp:DataPager .... /> </ItemTemplate> </asp:Repeater> This does not work. The repeater data source is not a datasource control It is set like so repeater.DataSource = datasource repeater.DataBind()

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  • javascript summary function

    - by Phil Jackson
    Hello, im trying to make a small name summary function depending on the size of the elements container, here's what I have; function shorten_text(str, size){ size = size.match( /[0-9]*/ ); var endValue = Math.floor( Number(size) / 10 ); var number; var newStr; for ( number = 0; number <= endValue; number++ ) { if( str[number].length != 0 ) { newStr += str[number]; } } return newStr + '...'; } shorten_text('Phil Jackson', '94px'); // output should be 'Phil Jack...' What I seem to get is undefinedundef... can anyone see where I am going wrong?

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  • Globalization for GetSystemTimeZones()

    - by user300992
    I want to get a list of timezones, so that i can populate the dropdown list. In .NET 3.5, we have TimeZoneInfo namespace, here is the code: ReadOnlyCollection<TimeZoneInfo> timeZones = TimeZoneInfo.GetSystemTimeZones(); foreach (TimeZoneInfo timeZone in timeZones) string name = timeZone.DisplayName However, "DisplayName" is in English. How can I pass the cultureInfo so that it can return other languages? I tried setting the Thread.CurrentCulture and CurrentUICulture, it didn't work. Am I missing something?

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  • HtmlAgilityPack SelectNodes expression to ignore an element with a certain attribute

    - by thaky
    I am trying to select nodes except from script nodes and a ul that has a class called 'relativeNav'. Can someone please direct me to the right path? I have been searching for this for a week and I can't find it anywhere. Currently I have this but it obviously selecting the //ul[@class='relativeNav'] as well. Is there anyway to put an NOT expression of it so that SelectNode will ignore that one? foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//body//*[not(self::script)]/text()")) { Console.WriteLine("Node: " + node); singleString += node.InnerText.Trim() + "\n"; }

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  • Winform custom control in WPF

    - by Erika
    Hi, I'm inserting a custom winform control in a WPF/ XAML window, however i'm realising that the sizing seems to be very different, what i designed in winform to be 730pixels wide for instance, when placed via a WindowsFormsHost, in a container 730pixels (or at least i think they're pixels..) wide, the control looks much larger and doesnt fit in the host and results in clipping from the right and bottom. Would anyone know how to make these sizes match or something? I'm really at a loss and its very difficult to fix a custom control to make it look as it should off hand on WPF! Please help!

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  • ReadOnlyCollection or IEnumerable for exposing member collections?

    - by Erik Öjebo
    Is there any reason to expose an internal collection as a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection? class Bar { private ICollection<Foo> foos; // Which one is to be preferred? public IEnumerable<Foo> Foos { ... } public ReadOnlyCollection<Foo> Foos { ... } } // Calling code: foreach (var f in bar.Foos) DoSomething(f); As I see it IEnumerable is a subset of the interface of ReadOnlyCollection and it does not allow the user to modify the collection. So if the IEnumberable interface is enough then that is the one to use. Is that a proper way of reasoning about it or am I missing something? Thanks /Erik

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  • How to do this in VB 2010 (C# to VB conversion)

    - by user203687
    I would like to have the following to be translated to VB 2010 (with advanced syntaxes) _domainContext.SubmitChanges( submitOperation => { _domainContext.Load<Customer>( _domainContext.GetCustomersQuery(), LoadBehavior.RefreshCurrent, loadOperation => { var results = _domainContext.Customers.Where( entity => !loadOperation.Entities.Contains(entity)).ToList(); results.ForEach( enitity => _domainContext.Customers.Detach(entity)); }, null); }, null); I managed to get the above with other ways (but not using anonymous methods). I would like to see all the advanced syntaxes available in VB 2010 to be applied to the above. Can anyone help me on this? thanks

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  • Select all links from a Html table using XPath (and HtmlAgilityPack)

    - by Adam Asham
    What I am trying to achieve is to extract all links with a href attribute that starts with http://, https:// or /. These links lie within a table (tbody tr td etc) with a certain class. I thought I could specify just the the a element without the whole path to it but it does not seem to work. I get a NullReferenceException at the line that selects the links: var table = doc.DocumentNode.SelectSingleNode("//table[@class='containerTable']"); if (table != null) { foreach (HtmlNode item in table.SelectNodes("a[starts-with(@href, 'https://')]")) { //not working I don't know about any recommendations or best practices when it comes to XPath. Do I create overhead when I query the document two times?

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  • Using reflection to retrieve constructor used to instantiate attribute

    - by summatix
    How can I retrieve information about how an attribute was instantiated? Consider I have the following class definitions: [AttributeUsage(AttributeTargets.Class)] public class ExampleAttribute : Attribute { public ExampleAttribute(string value) { Value = value; } public string Value { get; private set; } } [ExampleAttribute("test")] public class Test { } The new .NET 4.0 MemberInfo.GetCustomAttributesData method: foreach (var attribute in typeof(Test).GetCustomAttributesData()) { Console.WriteLine(attribute); } outputs [Example.ExampleAttribute("test")]. Is there another way to retrieve this same information, preferably using the MemberInfo.GetCustomAttributes method?

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  • Visual Studio Windows Forms Designer keyboard shortcuts

    - by Dan Tao
    Extremely basic question. Are there common actions I can perform using keyboard shortcuts in the Windows Forms designer in Visual Studio (2008)? Alternately, could I add my own keyboard shortcuts (either through settings or macros)? It'd really be nice if I could, for example, set a control to dock/undock in its parent container by typing Alt+D. Or if I could set a control's name just by typing Alt+N and typing the name. Things like that. It's just kind of tedious to click on the item, scroll in the Properties grid to the property I want to change, type the new value, scroll to the next property I want to change, etc. Which is why I have a feeling this functionality is in there already, or is easily configurable, and I just don't know about it.

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