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• Value of text box disapears - binding viewmodel to a tab (content control)

  - by Eli Perpinyal

  Based on the MVVM example by Josh Smith, I have implemented the multi tab option which binds to a different tab to a different view model using a simple datatemplate that binds a viewmodel to a view. <DataTemplate DataType="{x:Type fixtureVM:SearchViewModel}"> <SearchVw:SearchView/> </DataTemplate> The issue that I'm having, is when I switch tabs and then switch back again, the value in the textbox disappears. When I bind the Text in the textbox to a value in the ViewModel it does not disappear. This is fine, and I can overcome this but I am having another issue for example with the position of the scroll bar in a grid disappearing once the tab has lost focus. Why is the value disappearing? I'm assuming it is a WPF sub system task that cleans up resources!? how can I avoid this? I also feel it might be slowing down my app.

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• EntityFramework EntityState and databinding along with INotifyPropertyChanged

  - by OffApps Cory

  Hello, all! I have a WPF view that displays a Shipment entity. I have a textblock that contains an asterisk which will alert a user that the record is changed but unsaved. I originally hoped to bind the visibility of this (with converter) to the Shipment.EntityState property. If value = EntityState.Modified Then Return Visibility.Visible Else Return Visibility.Collapsed End If The property gets updated just fine, but the view is ignorant of the change. What I need to know is, how can I get the UI to receive notification of the property change. If this cannot be done, is there a good way of writing my own IsDirty property that handles editing retractions (i.e. if I change the value of a property, then change it back to it's original it does not get counted as an edit, and state remains Unchanged). Any help, as always, will be greatly appreciated. Cory

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• How to show validation messages in MVC?

  - by Ian Boyd

  When a user tries to click:        Save and they have entered in some invalid data, i want to notify them. This can be with methods such as: directing their attention to the thing that needs their attention with a balloon hint automatically dropping down a combo-box triggering an animation showing a modal dialog box etc What is the mechanism where a controller tells the view to show a validation message for some controls, given that different views have different notification methods? p.s. the controller doesn't know the order that controls are physically arranged in the view (e.g. LTR locale wants to notify the user in a top-down-left-to-right visual order, while RTL locale wants to notify the user in a bottom-up-right-to-left order)

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• Display problem with fresh install of 12.04

  - by Dan

  Just intalled Ubuntu 12.04 from CD and install went with no problems. After rebooting, I get the initial purple screen and then a black screen with mouse pointer and a few stray pixels at the bottom left of screen. Occasionally during the boot process, the purple screen comes back momentarily but then back to the black screen with the mouse pointer. When I finally give up and press the power button, the purple screen returns with the Shut Down box visible as it is shutting down. Any ideas? I have tried adding nomodeset after quiet splash, but no change. Possibly not doing it correctly, since I am somewhat of a newbie to linux. Thanks! Dan

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• Emberjs bindAttr inside of #each

  - by Andrej Kaurin

  Code for view is Ember.View.extend({ template: Ember.Handlebars.compile(html), // html is in string content: function() { return [ { Title: "Dashboard", ID: "dashboard" }, { Title: "Invoices", ID: "invoices" }, { Title: "Expenses", ID: "expenses" }, { Title: "People", ID: "people" }, { Title: "Reports", ID: "reports" }, { Title: "Settings", ID: "settings" } ]}, iconClass: "icon icon-dashboard" }); Template (show above as "html") looks like this: <ul> {{#each link in content}} <li> <a> <span class="icon" {{bindAttr class="iconClass"}}></span> <span class="title">{{link.Title}}</span> </a> </li> {{/each}} </ul> Am I doing something wrong with scope or?

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• SQL SERVER – Running Multiple Batch Files Together in Parallel

  - by pinaldave

  Recently I was preparing a demo for my next technical session, I had to do run a SQL code in parallel. I decided to use Batch File to run the code. I am not the best guy to with command shell so I did it with following setup. Code of tsql.sql SELECT 1 ColumnName Code of command.bat sqlcmd -S . -i tsql.sql timeout 100 Code of  AllBatch.bat start cmd.exe /C “command.bat” start cmd.exe /C “command.bat” start cmd.exe /C “command.bat” Now I ran AllBatch.bat and it run all the three files in parallel and simulated my needed scenario. I believe there should be simpler way using power-shell. Anybody want to come up with equivalent code which is improvement to this code? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Utility, T SQL, Technology

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• How can architects work with self-organizing Scrum teams?

  - by Martin Wickman

  An organization with a number of agile Scrum teams also has a small group of people appointed as "enterprise architects". The EA group acts as control and gatekeeper for quality and adherence to decisions. This leads to overlaps between the team decision and EA decisions. For instance, the team might want to use library X or want to use REST instead of SOAP, but the EA does not approve of that. Now, this can lead to frustration when team decisions are overruled. Taken far enough, it can potentially lead to a situation where the EA people "grabs" all power and the team ends up feeling demotivated and not very agile at all. The Scrum guides has this to say about it: Self-organizing: No one (not even the Scrum Master) tells the Development Team how to turn Product Backlog into Increments of potentially releasable functionality. Is that reasonable? Should the EA team be disbanded? Should the teams refuse or simply comply?

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• Django - Form validation error

  - by Igor G.

  Hello, I have a model like this: class Entity(models.Model): entity_name = models.CharField(max_length=100) entity_id = models.CharField(max_length=30, primary_key=True) entity_parent = models.CharField(max_length=100, null=True) photo_id = models.CharField(max_length=100, null=True) username = models.CharField(max_length=100, null=True) date_matched_on = models.CharField(max_length=100, null=True) status = models.CharField(max_length=30, default="Checked In") def __unicode__(self): return self.entity_name class Meta: app_label = 'match' ordering = ('entity_name','date_matched_on') verbose_name_plural='Entities' I also have a view like this: def photo_match(request): ''' performs an update in the db when a user chooses a photo ''' form = EntityForm(request.POST) form.save() And my EntityForm looks like this: class EntityForm(ModelForm): class Meta: model = Entity My template's form returns a POST back to the view with the following values: {u'username': [u'admin'], u'entity_parent': [u'PERSON'], u'entity_id': [u'152097'], u'photo_id': [u'2200734'], u'entity_name': [u'A.J. McLean'], u'status': [u'Checked Out'], u'date_matched_on': [u'5/20/2010 10:57 AM']} And form.save() throws this error: Exception in photo_match: The Entity could not be changed because the data didn't validate. I have been trying to figure out why this is happening, but cannot pinpoint the exact problem. I can change my Entities in the admin interface just fine. If anybody has a clue about this I would greatly appreciate it! Thanks, Igor

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• Sort list of items in Django

  - by mridang

  Hi Guys, I have a Django view called change_priority. I'm posting a request to this view with a commas separated list of values which is basically the order of the items in my model. The data looks like this: 1,4,11,31,2,4,7 I have a model called Items which has two values - id and priority. Upon getting this post request, how can I set the priority of the Item depending upon the list order. So my data in the db would look like. 1,1 4,2 11,3 31,4 2,5 4,6 7,7 Thanks guys.

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• Utilities Worldwide Succeed with Oracle Utilities Applications

  - by caroline.yu

  More than 50 utilities worldwide have selected or implemented Oracle Utilities applications in the current fiscal year to date to respond to environmental imperatives, adapt to changing business conditions, meet and exceed customer expectations, implement smart grid components and address operational issues. Customers who have recently selected or implemented Oracle Utilities applications include: Acea Distribuzione, California Water Service Company, City of Winnipeg, Denver Water, Enersource Hydro, GasTerra, Modesto Irrigation District, Rappahannock Electric Cooperative, San Francisco Public Utilities Commission and Western Power. "Around the world, utilities are under pressure to address customer demands, improve environmental quality and comply with regulatory requirements. Oracle Utilities provides a choice of mission-critical applications to deliver tangible business results. Our recent traction in the industry illustrates the solid value we bring to our customers," said Stephan Scholl, senior vice president and general manager, Oracle Utilities.

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• ajax in zend frame work

  - by rookie

  Hi, I am new to Zend Frame Work. I am using $ajaxContext = $this-_helper-getHelper('AjaxContext'); for adding action contexts. I have one Index.phtml page and all other views are ajax.phtml pages. I have to do some java script methods in the ajax.phtml pages. But i didn't find a way to refer the js files in the ajax.phtml pages. I have tried adding those in the controller init and index action, using $this-view-headScript()-appendFile, though i have the reference added in the page source, none of htese seems to be working on the ajax content. Then i tried to add it in the action for the ajax page, then it is not coming in the page source itself. As far as i understood, $this-view-headScript()-appendFile will append the file reference to the layout page and for the ajax.phtml pages, the layout will be disabled. Is there any way that i can refer my js files in the ajax.phtml pages?

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• India's Largest Polyglot Conference and Workshops for IT Software Professionals - Great Indian Devel

  Great Indian Developer Summit is the gold standard for India's software developer ecosystem for gaining exposure to and evaluating new projects, tools, services, platforms, languages, software and standards. Packed with premium knowledge, action plans and advise from been-there-done-it veterans, creators, and visionaries, the 2010 edition of Great Indian Developer Summit features focused sessions, case studies, workshops and power panels that will transform you into a force to reckon with. Featuring...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Project Kapros: A Custom-Built Workstation Featuring an In-Desk Computer

  - by Jason Fitzpatrick

  While we’ve seen our fair share of case mods, it’s infrequent we see one as polished and built-in as this custom built work station. What started as an IKEA Galant desk, ended as a stunningly executed desk-as-computer build. High gloss paint, sand-blasted plexiglass windows, custom lighting, and some quality hardware all come together in this build to yield a gorgeous setup with plenty of power and style to go around. Hit up the link below for a massive photo album build guide detailing the process from start to finish. Project Kapros: IKEA Galant PC Desk Mod [via Kotaku] How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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• MVC using LINQ? - Can't return anonymous types

  - by BlueRaja

  I'd like to implement MVC while using LINQ (specifically, LINQ-to-entities). The way I would do this is have the Controller generate (or call something which generates) the result-set using LINQ, then return that to the View to display the data. The problem is, if I do: return (from o in myTable select o); All the columns are read from the database, even the ones (potentially dozens) I don't want. And - more importantly - I can't do something like this: return (from o in myTable select new { o.column }); because there is no way to make anonymous types type-safe! I know for sure there is no nice, clean way of doing this in 3.5 (this is not clean...), but what about 4.0? Is there anything planned, or even proposed? Without something like duck-typing-for-LINQ, or type-safe anonymous return values (it seems to me the compiler should certainly be capable of that), it appears to be nearly impossible to cleanly separate the Controller from the View.

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• Library to parse ERB files

  - by Douglas Sellers

  I am attempting to parse, not evaluate, rails ERB files in a Hpricot/Nokogiri type manner. The files I am attempting to parse contain HTML fragments intermixed with dynamic content generated using ERB (standard rails view files) I am looking for a library that will not only parse the surrounding content, much the way that Hpricot or Nokogiri will but will also treat the ERB symbols, <%, <%= etc, as though they were html/xml tags. Ideally I would get back a DOM like structure where the <%, <%= etc symbols would be included as their own node types. I know that it is possible to hack something together using regular expressions but I was looking for something a bit more reliable as I am developing a tool that I need to run on a very large view code base where both the html content and the erb content are important. For example, content such as: blah blah blah <divMy Great Text <%= my_dynamic_expression %</div Would return a tree structure like: root - text_node (blah blah blah) - element (div) - text_node (My Great Text ) - erb_node (<%=)

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• How to implement UIViewController rotation in response to orientation changes?

  - by Greg Maletic

  My app has about 10 different UIViewControllers, just one of which I want to switch to landscape mode if the device is rotated. (All the rest, I want to keep in portrait.) In order to implement rotation on that one view, I needed to implement its controller's 'shouldAutorotate' method and return YES. Since this view is accessed via a navigation controller, I also needed to create a subclass of UINavigationController that implements 'shouldAutorotate' and return YES. This solution works, but too well. I find that all of the UIViewControllers I push onto my subclass of UINavigationController respond to rotation, even if I implement 'shouldAutorotate' and return NO. (Remember: I only want one particular UIViewController to respond to rotation, not every one in the navigation controller's stack.) So, my question is: how do I best do this? All the solutions I can come up with seem 1) cumbersome, and 2) worse, don't seem to work. Thanks very much.

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• How do you use blog content?

  - by fatherjack

  Do you write a blog, have you ever thought about it? I think people fall into one of a few categories when it comes to blogs, especially blogs with technical content. Writing articles furiously - daily, twice daily and reading dozens of others. Writing the odd piece of content and read plenty of others' output. Started a blog once and its fizzled out but reading lots. Thought about starting a blog someday but never got around to it, hopping into the occasional blog when a link or a Tweet takes them there. Never thought about writing one but often catching content from them when Google (or other preferred search engine) finds content related to their search. Now I am not saying that either of these is right or wrong, nor am I saying that anyone should feel any compulsion to be in any particular category. What I would say is that you as a blog reader have the power to move blog writers from one category to another. How, you might ask? How do I have any power over a blog writer? It is very simple - feedback. If you give feedback then the blog writer knows that they are reaching an audience, if there is no response then they we are simply writing down our thoughts for what could amount to nothing more than a feeble amount of exercise and a few more key stokes towards the onset of RSI. Most blogs have a mechanism to alert the writer when there are comments, and personally speaking, if an email is received saying there has been a response to a blog article then there is a rush of enthusiasm, a moment of excitement that someone is actually reading and considering the text that was submitted and made available for the whole world to read. I am relatively new to this blog game and could be in some extended honeymoon period as I have also recently been incorporated into the Simple Talk 'stable'. I can understand that once you get to the "Dizzy Heights of Ozar" (www.brentozar.com) then getting comments and feedback might not be such a pleasure and may even be rather more of a chore but that, I guess, is the price of fame. For us mere mortals starting out blogging, getting feedback (or even at the moment for me, simply the hope of getting feedback) is what keeps it going. The hope that you will pick a topic that hasn't been done recently by Brad McGehee, Grant Fritchey,  Paul Randall, Thomas LaRock or any one of the dozen of rock star bloggers listed here or others from SQLServerPedia and so on, and then do it well enough to be found, reviewed, or <shudder> (re)tweeted to bring more visitors is what we are striving for, along with the fact that the content we might produce is something that will be of benefit to others. There is only so much point to typing content that no-one is reading and putting it on a blog. You may as well just write it in a diary. A technical blog is not like, say, a blog covering photography techniques where the way to frame and take a picture stands true whether it was written last week, last year or last century - technical content goes sour, quite quickly. There isn't much call for articles about yesterdays technology unless its something that still applies to current versions too, so some content written no more than 2 years ago isn't worth having now. The combination of a piece of content that you know is going to not last long and the fact that no-one reads it is a strong force against writing anything else. Getting feedback counters that despair and gives a value to writing something new. I would say that any feedback is good but there are obviously comments that are just so negative or otherwise badly phrased that they would hasten the demise of a blog but, in general most feedback will encourage a writer. It may not be a comment that supports or agrees with the main theme of a post but if it generates discussion or opens up a previously unexplored viewpoint it is contributing to the blog and is therefore encouraging to the writer. Even if you only say "thank you" before you leave a blog, having taken a section of script to use for yourself or having been given a few links to some content that has widened your knowledge it will be so welcome to the blog owner. Isn't it also the decent thing to do, acknowledging that you have benefited from another's efforts?

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• Site Actions menu in SharePoint is WSS-like, whereas I have installed MOSS

  - by Graeme

  I had WSS installed on my VM and then uninstalled in order to install MOSS Enterprise I can see a lot of the MOSS stuff in the Central Administration pages but when I create a new web application and site collection, my Site Actions dropdown is showing the WSS version, i.e. Create, Edit Page and Site Settings as opposed to the MOSS menu which has View All Site Content, View Reports, Manage Content and Structure etc. I just tried deleting my web app and creating it all again but it's come back with the same thing again. Is somewhere remembering that I used to have WSS installed? (yes I know MOSS is built on top of WSS but you know what I mean!)

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• How to make the subview in a UIScrollView to refresh when we zoom it?

  - by wolverine

  I have subclassed UIView object inside a uiscrollview which displays a pdf page. I can zoom that page. But when I do so, the inside view is zoomed and is getting blurred. I understood that the inner view shud be refreshed and i called setNeedsDisplay. But no change have happened and its the same even now. Below is the code for drawRect for the subclassed uiview. - (void)drawRect:(CGRect)rect { if(document)//the pdf document object { CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextSaveGState(ctx); CGContextTranslateCTM(ctx, 0.00, [self bounds].size.height); NSLog(@"%f",[self bounds].size.height); CGContextScaleCTM(ctx, 1.0, -1.0); CGContextConcatCTM(ctx, CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, [self bounds], 0, true)); CGContextDrawPDFPage(ctx, page); CGContextRestoreGState(ctx); } }

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• SQL Server 2012 edition comparison details are published

  - by DavidWimbush

  Interesting stuff, particularly if you're doing BI. BISM tabular and Power View will not be in Standard Edition, only in the new - presumably more expensive - Business Intelligence Edition. That kind of makes sense as you need a fairly pricey edition of SharePoint to really get all the benefits, but it's a shame there won't be some kind of limited version in Standard Edition. And Always On will be in Standard Edition but limited to 2 nodes. I really expected Always On to be Enterprise-only so this is a great decision. It allows those of us working at a more modest scale to benefit and raises the fault tolerance of SQL Server as a product to a new level.Read all about it here: http://www.microsoft.com/sqlserver/en/us/future-editions/sql2012-editions.aspx

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• Zend routing, throws resource not found

  - by bluedaniel

  Ive got a url: http://dev.local/foodies/view?id=bluedaniel and ive got in my bootstrap: protected function _initRoute() { $config = new Zend_Config_Ini(APPLICATION_PATH . '/configs/routes.ini', 'production'); $router = new Zend_Controller_Router_Rewrite(); $router->addConfig($config, 'resources'); } and ive also got in my routes.ini: [production] resources.router.routes.foodies_view.route = ":foodies/:id" resources.router.routes.foodies_view.defaults.module = "foodies" resources.router.routes.foodies_view.defaults.controller = "view" resources.router.routes.foodies_view.defaults.action = "index" so http://dev.local/foodies/bluedaniel should work right? I get a Resource 'foodies:bluedaniel' not found error however with this setup

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• How create widget with clickable text in QT/PyQt?

  - by serge

  Hi everyone, i'm trying to realize non-editable QTableView with widgets in cells that should contain clickable listed text. With following code i'm setting widget in definite cell: view = QTableView() label = QLabel( <some html text> ) ... view.setIndexWidget(index, label) I used html to make label's text clickable, but links became blue with underline and moreover by clicking on it with right mouse button appears popup menu with "Copy Link Locaion" option, where i wanted to place some hidden information instead of url and of course do not let user see this info. I'm looking for light-weight widget, i thought that insertion of QGraphicsView in each cell will lead to big computer loads, but can't think of any other solution. Can you advice what should i use for this purpose? Thank you in advance Serge

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• Just-in-time invocation of Facebook login window from UIWebView

  - by Chris Garrett

  I have an app that presents a UIWebView pointing to my own server. I have a Facebook Like button on some pages inside the UIWebView. I have it working now, but the login screen is way too big for the phone screen. I would like to present a nicer login dialog such as the one in the Facebook iPhone API, and then continue back to the web view. The Facebook iPhone SDK has support for a login button and iPhone-friendly login screen, but it assumes that a user will click a login button before doing anything Facebook related. I would like the Like button to just appear, and to bring up the iPhone login screen only when necessary. I have monitored HTTP requests from my web view, and it looks like I could intercept the login request there, and present the login dialog. However, it seems that this would be fragile, because if Facebook changes those calls then my app will no longer work. Is there a more elegant way to do this?

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• ASP.NET MVC Web structure

  - by ile

  This is database structure. It is used to build simple cms in asp.net mvc. Before I run deeper into developing site, I want to make sure if this would be "correct" web structure: Articles: Controllers folder: Create controllers ArticleCategoryController and ArticleController Models folder: ArticleCategoryRepository and ArticleRepository View folder: ArticleCategory folder (Create.aspx, Edit.aspx, Index.aspx, Details.aspx); Article folder (Create.aspx, Edit.aspx, Index.aspx, Details.aspx) Photos: Controllers folder: Create controllers PhotoAlbumController and PhotoController Models folder: PhotoAlbumRepository and PhotoRepository View folder: PhotoAlbum folder (Create.aspx, Edit.aspx, Index.aspx, Details.aspx); Photo folder (Create.aspx, Edit.aspx, Index.aspx, Details.aspx) and so on... Is there a better way or this is ok? Thanks. Ile

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• Haskell vs Erlang for web services

  - by Zachary K

  I am looking to start an experimental project using a functional language and am trying to decide beween Erlang and Haskell, and both have some points that I really like. I like Haskell's strong type system and purity. I have a feeling it will make it easier to write really reliable code. And I think that the power of haskell will make some of what I want to do much easier. On the minus side I get the feeling that some of the Frameworks for doing web stuff on Haskell such as Yesod are not as advanced as their Erlang counter parts. I rather like the Erlang approach to threads and to fault tollerence. I have a feeling that the scalability of Erlang could be a major plus. Which leeds to to my question, what has people's exerience been in implementing web application backends in both Haskell and Erlang. Are there packages for Haskell to provide some of the lightweight threads and actors that one has in Erlang?

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