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• PrintableArea in C# - Bug?

  - by Brandi

  I am having an issue with PageSettings.PrintableArea's width and height values. Width, Height, and Size properties claim to "get or set" the values. Also, the inflate() function claims to change the size based on values passed in. However, all of these attempts to change the value have not worked. Inflate() is ignore (no error, just passes as if it worked, but the values remain unchanged. Attempting to set the height, width, or size gives a compiler error: "Cannot modify the return value of 'System.Drawing.Printing.PageSettings.PrintableArea' because it is not a variable". I get the feeling that this means the "or set" part of the description is a lie. Why I want to know this: (Someone always asks...) I have a printing application (C#, WinForm) that for most things is working rather well. I can set the printer settings and page settings objects to control what displays in the print dialog's printer properties. However, with Microsoft Office Document Image Writer, these settings are sometimes ignored, and the paper size returns as 0, 0 even when it displayed something else. All I really want it for it to be WYSIWYG as far as the displayed values go, so I change the paper size back to what it should be, but the printable area, if it is wrong, makes the resulting image wonky. The resulting image is the size of the printable area instead of the value in papersize. Just wondering if there was a reason for this or a way to get it not to do that. Thanks in advance. :)

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• Obj-C component-based game architecture and message forwarding

  - by WanderWeird

  Hello, I've been trying to implement a simple component-based game object architecture using Objective-C, much along the lines of the article 'Evolve Your Hierarchy' by Mick West. To this end, I've successfully used a some ideas as outlined in the article 'Objective-C Message Forwarding' by Mike Ash, that is to say using the -(id)forwardingTargetForSelector: method. The basic setup is I have a container GameObject class, that contains three instances of component classes as instance variables: GCPositioning, GCRigidBody, and GCRendering. The -(id)forwardingTargetForSelector: method returns whichever component will respond to the relevant selector, determined using the -(BOOL)respondsToSelector: method. All this, in a way, works like a charm: I can call a method on the GameObject instance of which the implementation is found in one of the components, and it works. Of course, the problem is that the compiler gives 'may not respond to ...' warnings for each call. Now, my question is, how do I avoid this? And specifically regarding the fact that the point is that each instance of GameObject will have a different set of components? Maybe a way to register methods with the container objects, on a object per object basis? Such as, can I create some kind of -(void)registerMethodWithGameObject: method, and how would I do that? Now, it may or may not be obvious that I'm fairly new to Cocoa and Objective-C, and just horsing around, basically, and this whole thing may be very alien here. Of course, though I would very much like to know of a solution to my specific issue, anyone who would care to explain a more elegant way of doing this would additionally be very welcome. Much appreciated, -Bastiaan

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• beginning oop php question: do constructors take the place of getter?

  - by Joel

  I'm working through this tutorial: http://www.killerphp.com/tutorials/object-oriented-php/php-objects-page-3.php At first he has you create a setter and getter method in the class: <?php class person{ var $name; function set_name($new_name){ $this->name=$new_name; } function get_name(){ return $this->name; } } php?> And then you create the object and echo the results: <?php $stefan = new person(); $jimmy = new person(); $stefan ->set_name("Stefan Mischook"); $jimmy ->set_name("Nick Waddles"); echo "The first Object name is: ".$stefan->get_name(); echo "The second Object name is: ".$jimmy->get_name(); ?> Works as expected, and I understand. Then he introduces constructors: class person{ var $name; function __construct($persons_name) { $this->name = $persons_name; } function set_name($new_name){ $this->name=$new_name; } function get_name(){ return $this->name; } } And returns like so: <?php $joel = new person("Joel"); echo "The third Object name is: ".$joel->get_name(); ?> This is all fine and makes sense. Then I tried to combine the two and got an error, so I'm curious-is a constructor always taking the place of a "get" function? If you have a constructor, do you always need to include an argument when creating an object? Gives errors: <?php $stefan = new person(); $jimmy = new person(); $joel = new person("Joel Laviolette"); $stefan ->set_name("Stefan Mischook"); $jimmy ->set_name("Nick Waddles"); echo "The first Object name is: ".$stefan->get_name(); echo "The second Object name is: ".$jimmy->get_name(); echo "The third Object name is: ".$joel->get_name(); ?>

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• Java: How to have an ArrayList as instance variable of an object?

  - by JDelage

  All, I'm working on a class project to build a little Connect4 game in Java. My current thinking is to have a class of Columns that have as instance variable a few integers (index, max. length, isFull?) and one ArrayList to receive both the integers above and the plays of each players (e.g., 1's and 0's standing for X's and O's). This is probably going to be split between 2 classes but the question remains the same. My current attempt looks like this: import java.util.ArrayList; public class Conn4Col { public int hMax; public int index; public final int initialSize = 0; public final int fullCol = 0; public ArrayList<Integer>; (...)} Unfortunately, this doesn't compile. The compiler says an is missing where my ArrayList declaration stands. We're just starting objects and we haven't really looked into other instance variables than the basic types. Can someone tell me where my error is and how to correct it? Many thanks, JDelage

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• System Tray Popup Windows 7 Style

  - by Mason Blier

  Hey All, I want something like this: http://cybernetnews.com/wp-content/uploads/2008/10/windows-7-wireless.jpg This window is not resizable, and aligns itself above the system tray icon which it is related to. I have this: http://i.imgur.com/79FZi.png Which is resizeable, and it goes wherever it feels like. If you click the volume control in Win 7, it always pops up directly above the icon. This is ideal. I've found this reference which I think is trying to solve the same problem (can't tell though as the images are dead), http://stackoverflow.com/questions/2169006/create-a-system-tray-styled-box-in-winforms-c but I'm using WPF and I'm not sure how to get these Form objects they refer to from my Window object. This is the XAML declaration of my window atm, <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" x:Class="WirelessControl.Window1" x:Name="Window" Title="Window1" Width="260" Height="370" mc:Ignorable="d" WindowStyle="None"></Window> I feel like based on how common this is in Windows that there must be a fairly easy way to do this. ResizeMode="NoResize" causes my window border to disappear, so that's no help. Thanks guys, I hope I was comprehensive enough.

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• Creating Array of settings names and values using ADO.NET Entities

  - by jordan.baucke

  I'm using an ADO.NET Entities (.edmx) data-model along with MVC2 to build an application. I have a DB table where I want to store settings for method that run elsewhere. MVC2 allows me to create a view, editor, etc. to update this table which is great, but now when I want to do simple assignments based on column titles I'm a bit confused. For example, I would like to easily build an array that I could offset into the record's value based on it's "Title" Column: var entities = new ManagerEntities(); Setting[] settings = entities.settings.ToArray(); This returns something like: Settings[0].[SettingTitle][SettingValue] However, I would like to more easily index into the value than having to loop through all the returned settings, when they're already index. string URL_ID_NEED = [NeededUrl][http://www.url.com] Am I missing something relatively simple? Thanks! ========================= *Update* ========================= Ok, I think I've got a solution, but I'm wondering why this would be so complicated, and if I'm just not thinking of the right context for ADO.NET objects, here's what I did: public string GetSetting(string SettingName) { var entities = new LabelManagerEntities(); IEnumerable<KeyValuePair<string, object>> entityKeyValues = new KeyValuePair<string, object>[] { new KeyValuePair<string, object>("SettingTitle", SettingName) }; EntityKey key = new EntityKey("LabelManagerEntities.Settings", entityKeyValues); // Get the object from the context or the persisted store by its key. Setting settingvalue = (Setting)entities.GetObjectByKey(key); return settingvalue.SettingValue.ToString(); } This method handles the job of querying the Entities by "Key" to get back the correct value as a returned string (which I can than strip out the " ", or or cast to an integer, etc. etc.,) Am I just duplicating functionality that already exists in ADO.NET's design patterns (I'm pretty new to it) -- or is this a reasonable solution?

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• WCF: Per-Call and Per-Session services...need convincing that Per-Call is worthwhile

  - by mrlane

  Hello all. We are currently doing a review of our WCF service design and one thing that is bothering me is the decision between Per-Call and Per-Session services. I believe I understand the concept behind both, but I am not really seeing the advantage of Per-Call services. I understand that the motivation for using Per-Call services is that a WCF services only holds a servier object for the life of a call thereby restricting the time that an expensive resource is held by the service instance, but to me its much simpler to use the more OO like Per-Session model where your proxy object instance always corrisponds to the same server object instance and just handle any expensive resources manually. For example, say I have a CRUD Service with Add, Update, Delete, Select methods on it. This could be done as a Per-Call service with database connection (the "expensive resource") instanciated in the server object constructor. Alternately it could be a Per-Session service with a database connection instanciated and closed within each CRUD method exposed. To me it is no different resource wise and it makes the programming model simpler as the client can be assured that they always have the same server object for their proxies: any in-expensive state that there may be between calls is maintained and no extra parameters are needed on methods to identify what state data must be retrieved by the service when it is instanciating a new server object again (as in the case of Per-Call). Its just like using classes and objects, where the same resource management issues apply, but we dont create new object instances for each method call we have on an object! So what am I missing with the Per-Call model? Thanks

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• How can I line up WPF items in a Horizontal WrapPanel so they line up based on an arbitrary vertical

  - by Scott Whitlock

  I'm trying to create a View in WPF and having a hard time figuring out how to set it up. Here's what I'm trying to build: My ViewModel exposes an IEnumerable property called Items Each item is an event on a timeline, and each one implements ITimelineItem The ViewModel for each item has it's own DataTemplate to to display it I want to display all the items on the timeline connected by a line. I'm thinking a WrapPanel inside of a ListView would work well for this. However, the height of each item will vary depending on the information it displays. Some items will have graphic objects right on the line (like a circle or a diamond, or whatever), and some have annotations above or below the line. So it seems complicated to me. It seems that each item on the timeline has to render its own segment of the line. That's fine. But the distance between the top of the item to the line (and the bottom of the item to the line) could vary. If one item has the line 50 px down from the top and the next item has the line 100 px down from the top, then the first item needs 50 px of padding so that the line segments add up. I think I could solve that problem, however, we only need to add padding if these two items are on the same line in the WrapPanel! Let's say there are 5 items and only room on the screen for 3 across... the WrapPanel will put the other two on the next line. That's ok, but that means only the first 3 need to pad together, and the last 2 need to pad together. This is what's giving me a headache. Is there another approach I could look at?

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• JS: variable inheritance in anonymous functions - scope

  - by tkSimon

  hey guys, someone from doctype sent me here. long story short: var o="before"; x = function() //this needs to be an anonymous function { alert(o); //the variable "o" is from the parent scope }; o="after"; //this chages "o" in the anonymous function x(); //this results in in alert("after"); //which is not the way i want/need it in reality my code is somewhat more complex. my script iterates through many html objects and adds an event listener each element. i do this by declaring an anonymous function for each element and call another function with an ID as argument. that ID is represented by the "o"-variable in this example. after some thinking i understand why it is the way it is, but is there a way to get js to evaluate o as i declare the anonymous function without dealing with the id attribute and fetching my ID from there? my full source code is here: http://pastebin.com/GMieerdw the anonymous function is on line 303

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• Help me understand these generic method warnings

  - by Raj

  Folks, I have a base class, say: public class BaseType { private String id; ... } and then three subclasses: public class TypeA extends BaseType { ... } public class TypeB extends BaseType { ... } public class TypeC extends BaseType { ... } I have a container class that maintains lists of objects of these types: public class Container { private List<TypeA> aList; private List<TypeB> bList; private List<TypeC> cList; // finder method goes here } And now I want to add a finder method to container that will find an object from one of the lists. The finder method is written as follows: public <T extends BaseType> T find( String id, Class<T> clazz ) { final List<T> collection; if( clazz == TypeA.class ) { collection = (List<T>)aList; } else if( clazz == TypeB.class ) { collection = (List<T>)bList; } else if( clazz == TypeC.class ) { collection = (List<T>)cList; } else return null; for( final BaseType value : collection ) { if( value.getId().equals( id ) ) { return (T)value; } } return null; } My question is this: If I don't add all the casts to T in my finder above, I get compile errors. I think the compile should be able to infer the types based on parametrization of the generic method (). Can anyone explain this? Thanks. -Raj

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• How do I bind list items to an Accordian control from the Silverlight 3 Toolkit?

  - by Blanthor

  I have a list of objects in a model public class AccordianModel { public List<AccordianItem> Items { get; set; } public AccordianModel() { Items = new List<AccordianItem> { new AccordianItem() {Title = "Monkey", ImageUri = "Images/monkey.jpg"}, new AccordianItem() {Title = "Cow", ImageUri = "Images/cow.jpg"}, }; } } I want to show the image in the background image of AccordianItems If I hard code it, it looks like this... <layoutToolkit:AccordionItem x:Name="Item2" Header="Item 2" Margin="0,0,10,0" AccordionButtonStyle="{StaticResource AccordionButtonStyle1}" ExpandableContentControlStyle="{StaticResource ExpandableContentControlStyle1}" HeaderTemplate="{StaticResource DataTemplate1}" BorderBrush="{x:Null}" ContentTemplate="{StaticResource CarouselContentTemplate}"> <layoutToolkit:AccordionItem.Background> <ImageBrush ImageSource="Images/cow.jpg" Stretch="None"/> </layoutToolkit:AccordionItem.Background> </layoutToolkit:AccordionItem> When I try it with a binding like <ImageBrush ImageSource="{Binding Path={StaticResource MyContentTemplate.ImageUri}}" Stretch="None"/> or if I try it with <ImageBrush ImageSource="{Binding Path=Items[0].ImageUri}" Stretch="None"/> , it throws XamlParseException. I haven't seen enough Silverlight yet and I cannot find a close enough example that it makes sense to me.

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• C# Lack of Static Inheritance - What Should I Do?

  - by yellowblood

  Alright, so as you probably know, static inheritance is impossible in C#. I understand that, however I'm stuck with the development of my program. I will try to make it as simple as possible. Lets say our code needs to manage objects that are presenting aircrafts in some airport. The requirements are as follows: There are members and methods that are shared for all aircrafts There are many types of aircrafts, each type may have its own extra methods and members. There can be many instances for each aircraft type. Every aircraft type must have a friendly name for this type, and more details about this type. For example a class named F16 will have a static member FriendlyName with the value of "Lockheed Martin F-16 Fighting Falcon". Other programmers should be able to add more aircrafts, although they must be enforced to create the same static details about the types of the aircrafts. In some GUI, there should be a way to let the user see the list of available types (with the details such as FriendlyName) and add or remove instances of the aircrafts, saved, lets say, to some XML file. So, basically, if I could enforce inherited classes to implement static members and methods, I would enforce the aircraft types to have static members such as FriendlyName. Sadly I cannot do that. So, what would be the best design for this scenario?

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• Setting an instanced class property overwrites the property in all instances.

  - by Peter Moore

  I have two instances of a class. Setting a property in the first instance will set it for the second instance too. Why? It shouldn't. The property is not a "prototype property". Check the code below, what happens to Peter Griffin? Two objects are created and given the name "Peter Griffin" and "Roger Moore" but the alert boxes will say "Peter Moore" and "Roger Moore". What happened to Peter Griffin? var BaseClass = function(){ this.name = ""; this.data = {}; this.data.lastname = ""; } var ExtendedClass = function(){ this.setName = function(fname, lname){ this.name = fname; this.data.lastname = lname; } this.hello = function(){ alert("Full name: " + this.name + " " + this.data.lastname); } } ExtendedClass.prototype = new BaseClass(); pilot = new ExtendedClass(); driver = new ExtendedClass(); pilot.setName("Peter", "Griffin"); driver.setName("Roger", "Moore"); pilot.hello(); // Full name: Peter Moore driver.hello(); // Full name: Roger Moore

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• 'ErrorMessageResourceType' property specified was not found. on XmlSerialise

  - by Redeemed1

  In my ASP.Net MVC app I have a Model layer which uses localised validation annotations on business objects. The code looks like this: [XmlRoot("Item")] public class ItemBo : BusinessObjectBase { [Required(ErrorMessageResourceName = "RequiredField", ErrorMessageResourceType = typeof(StringResource))] [HelpPrompt("ItemNumber")] public long ItemNumber { get; set; } This works well. When I want to serialise the object to xml I get the error: "'ErrorMessageResourceType' property specified was not found" (although it is lost beneath other errors, it is the innerexception I am trying to work on. The problem therefore is the use of the DataAnnotations attributes. The relevant resource files are in another assembly and are marked as 'public' and as I said everything works well until I get to serialisation. I have references to the relevant DataAnnotations class etc in my nunit tests and target class. By the way, the HelpPrompt is another data annotation I have defined elsewhere and is not causing the problem. Furthermore if I change the Required attribute to the standard format as follows, the serialisation works ok. [Required(ErrorMessage="Error")] Can anyone help me?

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• Jquery datepicker mindate, maxdate

  - by Cesar Lopez

  I have the two following datepicker objects: This is to restrict the dates to future dates. What I want: restrict the dates from current date to 30 years time. What I get: restrict the dates from current date to 10 years time. $(".datepickerFuture").datepicker({ showOn: "button", buttonImage: 'calendar.gif', buttonText: 'Click to select a date', duration:"fast", changeMonth: true, changeYear: true, dateFormat: 'dd/mm/yy', constrainInput: true, minDate: 0, maxDate: '+30Y', buttonImageOnly: true }); This is to restrict to select only past dates: What I want: restrict the dates from current date to 120 years ago time. What I get: restrict the dates from current date to 120 years ago time, but when I select a year the maximum year will reset to selected year (e.g. what i would get when page load from fresh is 1890-2010, but if I select 2000 the year select box reset to 1880-2000) . $(".datepickerPast").datepicker({ showOn: "button", buttonImage: 'calendar.gif', buttonText: 'Click to select a date', duration:"fast", changeMonth: true, changeYear: true, dateFormat: 'dd/mm/yy', constrainInput: true, yearRange: '-120:0', maxDate: 0, buttonImageOnly: true }); I need help with both datepicker object, any help would be very much appreciated. Thanks in advance. Cesar.

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• What components and IDE add-ins do you install with Delphi?

  - by Mick

  After a clean install of Delphi, what components and IDE add-ins do you make certain that you install? What's your Delphi "rig"? Here's what I install after a clean installation: Delphi 2007 JCL / JVCL - JEDI Code Library and JEDI Visual Code Library (600+ components) JWA / JWSCL - JEDI API Library & Security Code Library GExperts - GExperts is a free set of tools built to increase the productivity of Delphi and C++Builder programmers by adding several features to the IDE. TWM's experimental GExperts code formatter - adds code formatting capabilities to Delphi Virtual TreeView - Virtual Treeview is a treeview control built from ground up. More than 5 years of development made it one of the most flexible and advanced tree controls available today. MustangPeak Components (EasyList View, Virtual ShellTools, etc) - EasyListview is a control that has no dependance on the Microsoft Listview control but has all the features of the latest version from Microsoft. Also includes 'Explorer.exe' like shell components. Synapse lightweight networking components - contains simple low level non-visual objects for easy programming without problems. (no required multi-threaded synchronization, no need for windows message processing,…) Great for command line utilities, visual projects, NT services EurekaLog - EurekaLog is a complete bug resolution tool for Delphi and C++Builder developers that gives your application the power to catch every exception and memory leak, directly on the end user PC, generating a detailed log of the call stack (with file, class, method and line number), optionally sending you a copy of each log entry via email or to a web bug-tracker. DelphiSpeedUp - DelphiSpeedUp is an IDE plugin for Delphi and C++Builder. It improves the IDE’s startup speed and increases the general speed of the whole IDE. DDevExtensions - DDevExtensions extends the Delphi/C++Builder IDE by adding some new productivity features. IDE Fix Pack - The IDE Fix Pack installs is a DLL-Expert that fixes the following RAD Studio 2007 bugs at runtime. All changes are done in memory. No file on disk is modified. TPerlRegex - Regular Expression library for Delphi How about other Delphi developers?

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• Updating Lists of Lists in Tapestry4 using textfields and a single submit button

  - by Nicolas Scarrci

  In Tapestry 4 I am trying it iterate over a list of lists (technically a list of objects who have a list of strings as a data field). I am currently doing this by using 'nested' for components. (This is pseudo code) <span jwcid="Form"> <span jwcid="@For" source="ognl:Javaclass.TopLevelList" value="ognl:SecondLevelList" index="ognl:index"> <span jwcid="@For" source="ognl:SecondLevelList.List" value="ognl:ListItem" index="ListItemIndex"> <span jwcid="@TextField" value="ognl:ListItem"/> <span jwcid="@Submit" listener="ognl:listeners.onSubmit"/> </span></span></span> The onSubmit listener then accesses the index and ListItem index page properties, as well as the ListItem page property in order to correctly update the list in Javaclass.TopLevelList. This works fine, but it looks terrible, and is cumbersome to the end user. I would prefer to somehow simulate this functionality using only one submit button at the bottom of the page. I have looked into somehow using the overlying form component to obtain a list of the 'form control components' within it, and then (with great care) parsing through tapestry's naming conventions to recover the functionality of the indexes. If anyone knows how to do this, or could explain the form component (how/when it submits, etc.) it would be greatly appreciated.

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• Subsonic Access To App.Config Connection Strings From Referenced DLL in Powershell Script

  - by J Wynia

  I've got a DLL that contains Subsonic-generated and augmented code to access a data model. Actually, it is a merged DLL of that original assembly, Subsonic itself and a few other referenced DLL's into a single assembly, called "PowershellDataAccess.dll. However, it should be noted that I've also tried this referencing each assembly individually in the script as well and that doesn't work either. I am then attempting to use the objects and methods in that assembly. In this case, I'm accessing a class that uses Subsonic to load a bunch of records and creates a Lucene index from those records. The problem I'm running into is that the call into the Subsonic method to retrieve data from the database says it can't find the connection string. I'm pointing the AppDomain at the appropriate config file which does contain that connection string, by name. Here's the script. $ScriptDir = Get-Location [System.IO.Directory]::SetCurrentDirectory($ScriptDir) [Reflection.Assembly]::LoadFrom("PowershellDataAccess.dll") [System.AppDomain]::CurrentDomain.SetData("APP_CONFIG_FILE", "$ScriptDir\App.config") $indexer = New-Object LuceneIndexingEngine.LuceneIndexGenerator $indexer.GeneratePageTemplateIndex("PageTemplateIndex"); I went digging into Subsonic itself and the following line in Subsonic is what's looking for the connection string and throwing the exception: ConfigurationManager.ConnectionStrings[connectionStringName] So, out of curiosity, I created an assembly with a single class that has a single property that just runs that one line to retrieve the connection string name. I created a ps1 that called that assembly and hit that property. That prototype can find the connection string just fine. Anyone have any idea why Subsonic's portion can't seem to see the connection strings?

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• Castle MonoRail ARDataBind trying to bind to non-existent row

  - by dave thieben

  I have a shopping cart application running on MonoRail and using Castle ActiveRecord/NHibernate, and there is a ShoppingCart table and a ShoppingCartItems table, which are mapped to entities. Here's the scenario: a user adds things to the shopping cart, say 5 items, and goes to view the cart. The cart shows all 5 items. the user duplicates the tab/window and gets another tab of the same cart (call it tab B). the user removes an item from the cart, so now there are 4 items in tab B, but in the original tab A, there are still 5 items. the user goes back to tab A, and updates something in the cart and clicks the "update" button which submits the changes. my MonoRail action tries to do an ARDataBind on ShoppingCartItems using the data from the view, which includes all 5 items. when it gets to the item that the user deleted from tab B, it throws a "No row with the given identifier exists" for that item. I can't figure out if there is a way to have it not bind that row, return null, return new instance, etc.? there is an AutoLoadBehavior parameter on the ARDataBind attribute, but that appears to only affect loading of child entities, and not the root entity. regardless of which option I choose, I get the exception before control even enters the action method (except AutoLoadBehavior.Never, but that doesn't really help me). instead, I have code that calls Request.ObtainParamsNode() to pull the form nodes and parse them manually into objects, and ignores the ones that no longer exist. is there a better way? thanks.

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• C# Application Calling Powershell Script Issues

  - by Ben

  Hi, I have a C# Winforms application which is calling a simple powershell script using the following method: Process process = new Process(); process.StartInfo.FileName = @"powershell.exe"; process.StartInfo.Arguments = String.Format("-noexit \"C:\Develop\{1}\"", scriptName); process.Start(); The powershell script simply reads a registry key and outputs the subkeys. $items = get-childitem -literalPath hklm:\software foreach($item in $items) { Write-Host $item } The problem I have is that when I run the script from the C# application I get one set of results, but when I run the script standalone (from the powershell command line) I get a different set of results entirely. The results from running from the c# app are: HKEY_LOCAL_MACHINE\software\Adobe HKEY_LOCAL_MACHINE\software\Business Objects HKEY_LOCAL_MACHINE\software\Helios HKEY_LOCAL_MACHINE\software\InstallShield HKEY_LOCAL_MACHINE\software\Macrovision HKEY_LOCAL_MACHINE\software\Microsoft HKEY_LOCAL_MACHINE\software\MozillaPlugins HKEY_LOCAL_MACHINE\software\ODBC HKEY_LOCAL_MACHINE\software\Classes HKEY_LOCAL_MACHINE\software\Clients HKEY_LOCAL_MACHINE\software\Policies HKEY_LOCAL_MACHINE\software\RegisteredApplications PS C:\Develop\RnD\SiriusPatcher\Sirius.Patcher.UI\bin\Debug When run from the powershell command line I get: PS M: C:\Develop\RegistryAccess.ps1 HKEY_LOCAL_MACHINE\software\ATI Technologies HKEY_LOCAL_MACHINE\software\Classes HKEY_LOCAL_MACHINE\software\Clients HKEY_LOCAL_MACHINE\software\Equiniti HKEY_LOCAL_MACHINE\software\Microsoft HKEY_LOCAL_MACHINE\software\ODBC HKEY_LOCAL_MACHINE\software\Policies HKEY_LOCAL_MACHINE\software\RegisteredApplications HKEY_LOCAL_MACHINE\software\Wow6432Node PS M: The second set of results match what I have in the registry, but the first set of results (which came from the c# app) don't. Any help or pointers would be greatly apreciated :) Ben

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• Rails.cache throws "marshal dump" error when changed from memory store to memcached store

  - by gsmendoza

  If I set this in my environment config.action_controller.cache_store = :mem_cache_store ActionController::Base.cache_store will use a memcached store but Rails.cache will use a memory store instead: $ ./script/console >> ActionController::Base.cache_store => #<ActiveSupport::Cache::MemCacheStore:0xb6eb4bbc @data=<MemCache: 1 servers, ns: nil, ro: false>> >> Rails.cache => #<ActiveSupport::Cache::MemoryStore:0xb78b5e54 @data={}> In my app, I use Rails.cache.fetch(key){ object } to cache objects inside my helpers. All this time, I assumed that Rails.cache uses the memcached store so I'm surprised that it uses memory store. If I change the cache_store setting in my environment to config.cache_store = :mem_cache_store both ActionController::Base.cache_store and Rails.cache will now use the same memory store, which is what I expect: $ ./script/console >> ActionController::Base.cache_store => #<ActiveSupport::Cache::MemCacheStore:0xb7b8e928 @data=<MemCache: 1 servers, ns: nil, ro: false>, @middleware=#<Class:0xb7b73d44>, @thread_local_key=:active_support_cache_mem_cache_store_local_cache> >> Rails.cache => #<ActiveSupport::Cache::MemCacheStore:0xb7b8e928 @data=<MemCache: 1 servers, ns: nil, ro: false>, @middleware=#<Class:0xb7b73d44>, @thread_local_key=:active_support_cache_mem_cache_store_local_cache> However, when I run the app, I get a "marshal dump" error in the line where I call Rails.cache.fetch(key){ object } no marshal_dump is defined for class Proc Extracted source (around line #1): 1: Rails.cache.fetch(fragment_cache_key(...), :expires_in => 15.minutes) { ... } vendor/gems/memcache-client-1.8.1/lib/memcache.rb:359:in 'dump' vendor/gems/memcache-client-1.8.1/lib/memcache.rb:359:in 'set_without_newrelic_trace' What gives? Is Rails.cache meant to be a memory store? Should I call controller.cache_store.fetch in the places where I call Rails.cache.fetch?

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• WPF ICommand over a button

  - by toni

  I have implemented a custom IComand class for one of my buttons. The button is placed in a page 'MyPage.xaml' but its custom ICommand class is placed in another class, not in the MyPage code behind. Then from XAML I want to bind the button with its custom command class and then I do: MyPage.xaml: <Page ...> <Page.CommandBindings> <CommandBinding Command="RemoveAllCommand" CanExecute="CanExecute" Executed="Execute" /> </Page.CommandBindings> <Page.InputBindings> <MouseBinding Command="RemoveAllCommand" MouseAction="LeftClick" /> </Page.InputBindings> <...> <Button x:Name="MyButton" Command="RemoveAllCommand" .../> <...> </Page> and the custom command button class: // Here I derive from MyPage class because I want to access some objects from // Execute method public class RemoveAllCommand : MyPage, ICommand { public void Execute(Object parameter) { <...> } public bool CanExecute(Object parameter) { <...> } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } } My problem is how to say MyPage.xaml that Execute and CanExecute methods for the button is in another class and not the code behind where is placed the button. How to say these methods are in RemoveAllCommand Class in XAML page. Also I want to fire this command when click mouse event is produced in the button so I do an input binding, is it correct? Thanks

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• UML class diagram vs ER database diagram

  - by salva84

  Hi, I'm a little confused, I'm developing a program, the program consist in two parts, the server and the clients, there are groups, places, messages... stored in the server, and the clients has to connect with it. I've design the use cases diagram, the activity diagrams, and I have design the class diagram too. The thing is that I want to implement the server in a mysql tables for storing the users, groups, places... users in groups... so I've designed a E-R diagram consisting in 6 tables, but the problem is that I think that my class diagram and my ER diagram looks too similar, I mean, I think I'm not doing things right because I have a class for each table practically, and when I have to extract all the users on my system, do I have to convert all the rows into objects at first and write in the database for each object modified? The easy choice for me would be to base my whole application only in the database, and making a class to extract and insert data in it, but I have to follow the UML specification and I'm a little confused what to do with the class diagram, because the books I have read say that I have to create a class for each "entity" of my program. Sorry for my bad English. Thank you.

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• QPrinter, QPrintDialog giving errors not encountered in code examples

  - by karunesh

  In the imageviewer example, QPainter and QPrintDialog objects are defined and used as following: #ifndef QT_NO_PRINTER QPrinter printer; #endif and QPrintDialog dialog(&printer, this); A QPainter object is then initialized with QPrinter (printer). When I tried to use the same code in my function, it looks like: void imageviewer::print() { ... #ifdef QT_NO_PRINTER QPrinter printer(this); //ERROR 1 QPrintDialog dialog(&printer, this);//ERROR 2 and 3 if (dialog.exec()) //ERROR 4 { //do the painting } #endif } The errors are: 1. variable 'QPrinter printer' has initializer but incomplete type 2. 'QPrintDialog' was not declared in this scope 3. Expected ';' before 'dialog' 4. 'dialog' was not declared in this scope What I am notable to understand is why are these errors arising when I am using them in my code, but not in the example. As a friend pointed out, I made sure that I used the right #include files and made sure that 'printer' and 'dialog' were not touched anywhere else in the example.

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• Extjs to call a RESTful webservice

  - by VSC

  Hello, I am trying to make a RESTful webservice call using Extjs. Below is the code i am using: Ext.Ajax.request({ url: incomingURL , method: 'POST', params: {param1:p1, param2:p2}, success: function(responseObject){ var obj = Ext.decode(responseObject.responseText); alert(obj); }, failure: function(responseObject){ var obj = Ext.decode(responseObject.responseText); alert(obj); } }); but it does not work, the request is sent using OPTIONS method instead of POST. I also tried to do the same thing using below code but result is the same: var conn = new Ext.data.Connection(); conn.request({ url: incomingURL, method: 'POST', params: {param1:p1, param2:p2}, success: function(responseObject) { Ext.Msg.alert('Status', 'success'); }, failure: function(responseObject) { Ext.Msg.alert('Status', 'Failure'); } }); But when i tried to do the same thing using basic ajax call ( using the browser objects directly i.e. XMLHttpRequest() or ActiveXObject("Microsoft.XMLHTTP")) it works fine and i get the response as expected. Can anyone please help me, as i am not able to understand what i am doing wrong with extjs ajax call?

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