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  • Best online course for C#/SQL for a professional engineer

    - by Rich
    I know similar questions have been asked, but I've not been able to find information specific to my situation. I'm looking for "continuing education"-type options, specifically a C# and/or SQL course. I'm a software engineering professional with a graduate level computer science degree. So I'm looking for something substantial that will be challenging. I certainly already have me feet wet in both C# and SQL I'm just looking for a more formal training to round out the edges. There is a good chance my company will pay for it if it is reasonably priced so it doesn't have to be free and preferably shouldn't be (a certificate or certification to come out of it would be nice). When I tried Google, all I found were things that sounded like crash courses (like a 3 day course or course for "dummies"), or course that did not seem very credible. Can anyone recommend a course of action for this? Thanks!

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  • Relational database queestion with php.

    - by Oliver Bayes-Shelton
    Hi, Not really a coding question more a little help with my idea of a Relational database. If I have 3 tables in a SQL database. In my php script I basically query the companies which are in industry "a" and then insert a row into a seperate table with their details such as companyId , companyName etc is that a type of Relational database ? I have explained it in a simple way so we don't get confused what I am trying to say.

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  • Silverlight 4 Drag and Drop Treeview

    - by Rich
    Does anyone have an example for any of the following scenarios. Given, these are all dynamically populated trees. Not using a Heirarchal data template, but by iterating through object collections manually and appending children at the appropriate level. Treeview1 has 3 levels, but items can only be reordered within their level. So, lets say we have Drives, Folders and Files. Drives can be rearranged in an order, but not put into a Folder. When navigated down one level in a drive, the individual folders can be reordered, but not dragged between drives.. and same with files, only can be reordered, but not moved to a different folder or drive I have 2 treeviews, Treeview1 is the same as #1 above and Treeview2 is like a picklist of available items. A user can drag an item from Treeview2 to Treeview1, but it can only be placed at Treeview1's File Level. The dragged item cannot be a child of a file, or placed at the folder level, nor placed at the drive level. Also, how to handle the Above, On Top, or Below an item. I have yet to come across these examples.

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  • Android Tile Bitmap

    - by Rich Lawrence
    I'm trying to load a bitmap in Android which I want to tile. I'm currently using the following in my view to display a bitmap: canvas.drawBitmap(bitmap, srcRect, destRect, null) I essentially want to use this bitmap as a background image in my app and would like to repeat the bitmap in both the X and Y directions. I've seen the TileMode.REPEAT constant for the BitmapShader class but am unsure if this is to do with repeating he actual bitmap or to do with applying a filter to the bitmap.

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  • hundreds of databases sql server log shipping

    - by Oliver
    SQL Server 2005 Standard 64x, with 300+ tiny databases currently (5MB each), user base adds databases as needed. Want to implement log shipping for warm standby, but not via the wizard, since that looks like it adds 3 jobs (1 on primary, 2 on secondary) for each log-shipped database. Do I try to write my own or use something like Quest's LiteSpeed? Or am I being too squeamish about having hundreds of SQL Server Agent jobs and all of them firing off (or worse, would I have to try to time them)? All advice welcome.

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  • Using jQuery to listen for an AJAX load that is not loaded using jQuery.AJAX

    - by rich
    Okay, have a bit of a tricky one (for me anyway, i'm pretty rubbish at jQuery/JavaScript). I'm pulling in data using standard AJAX (ie, NOT using a framework like jQuery or whatnot... there is a reason for it) However, I then need to load up a jQuery script as soon as the page has been loaded in. So, here is the question, how do I bind the script once the DOM has been updated? I have been using Ariel Fleser's listen plugin (http://flesler.blogspot.com/2007/10/jquerylisten.html) for picking up on events such as clicks which works a treat, but I can't see how this can be used to listen for a load event. Any ideas? I'm pretty stumped on this one!!

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  • WPF animation/UI features performance and benchmarking

    - by Rich
    I'm working on a relatively small proof-of-concept for some line of business stuff with some fancy WPF UI work. Without even going too crazy, I'm already seeing some really poor performance when using a lot of the features that I thought were the main reason to consider WPF for UI building in the first place. I asked a question on here about why my animation was being stalled the first time it was run, and at the end what I found was that a very simple UserControl was taking almost half a second just to build its visual tree. I was able to get a work around to the symptom, but the fact that it takes that long to initialize a simple control really bothers me. Now, I'm testing my animation with and without the DropShadowEffect, and the result is night and day. A subtle drop shadow makes my control look so much nicer, but it completely ruins the smoothness of the animation. Let me not even start with the font rendering either. The calculation of my animations when the control has a bunch of gradient brushes and a drop shadow make the text blurry for about a full second and then slowly come into focus. So, I guess my question is if there are known studies, blog posts, or articles detailing which features are a hazard in the current version of WPF for business critical applications. Are things like Effects (ie. DropShadowEffect), gradient brushes, key frame animations, etc going to have too much of a negative effect on render quality (or maybe the combinations of these things)? Is the final version of WPF 4.0 going to correct some of these issues? I've read that VS2010 beta has some of these same issues and that they are supposed to be resolved by final release. Is that because of improvements to WPF itself or because half of the application will be rebuilt with the previous technology?

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  • onFocusChange code example?

    - by Rich
    I have a form with 2 fields where you can enter in either months or years. How do I setup the form so that if you enter in the years, the months edittext field will be automatically calculated and entered into it's own box. Likewise, I want the years to be calculated if you entered in the months Can anyone give me sample code for this?

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  • Why does ObservableCollection throws an exception when being modified?

    - by Oliver Hanappi
    Hi! My application uses a WPF DataGrid. One of the columns is a template column that containts a combobox bound to an ObservableCollection of the entity which feeds the row. When I add a value to the ObservableCollection, a NullReferenceException is thrown. Has anybody an idea why this happens? Here is the stacktrace of the exception: at MS.Internal.Data.PropertyPathWorker.DetermineWhetherDBNullIsValid() at MS.Internal.Data.PropertyPathWorker.get_IsDBNullValidForUpdate() at MS.Internal.Data.ClrBindingWorker.get_IsDBNullValidForUpdate() at System.Windows.Data.BindingExpression.ConvertProposedValue(Object value) at System.Windows.Data.BindingExpressionBase.UpdateValue() at System.Windows.Data.BindingExpression.Update(Boolean synchronous) at System.Windows.Data.BindingExpressionBase.Dirty() at System.Windows.Data.BindingExpression.SetValue(DependencyObject d, DependencyProperty dp, Object value) at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal) at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value) at System.Windows.Controls.Primitives.Selector.UpdatePublicSelectionProperties() at System.Windows.Controls.Primitives.Selector.SelectionChanger.End() at System.Windows.Controls.Primitives.Selector.OnItemsChanged(NotifyCollectionChangedEventArgs e) at System.Windows.Controls.ItemsControl.OnItemCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e) at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args) at System.Windows.Controls.ItemCollection.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e) at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list) at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args) at System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args) at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args) at System.Windows.Data.ListCollectionView.ProcessCollectionChangedWithAdjustedIndex(NotifyCollectionChangedEventArgs args, Int32 adjustedOldIndex, Int32 adjustedNewIndex) at System.Windows.Data.ListCollectionView.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args) at System.Windows.Data.CollectionView.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args) at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e) at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item) at System.Collections.ObjectModel.Collection`1.Add(T item) at ORF.PersonBook.IdentityModule.Model.SubsidiaryModel.AddRoom(RoomModel room) in C:\Project\Phoenix\Development\src\ORF.PersonBook.IdentityModule\Model\SubsidiaryModel.cs:line 127

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  • Silverlight 3 Application Background

    - by Rich Blumer
    I am new to Silverlight development. I have created a nice png file in Expression Design. I would like to use this png file as the background for my application. When I set the Stretch property to fill, it does not fill the entire page like I think it should. Here's the xaml: <Grid x:Name="LayoutRoot"> <Grid.Background> <ImageBrush ImageSource="IgniteTechDesign.png"/> </Grid.Background> <Border x:Name="ContentBorder"> <navigation:Frame x:Name="ContentFrame" Style="{StaticResource ContentFrameStyle}" Source="/Home" Navigated="ContentFrame_Navigated" NavigationFailed="ContentFrame_NavigationFailed"> <navigation:Frame.UriMapper> <uriMapper:UriMapper> <uriMapper:UriMapping Uri="" MappedUri="/Views/Home.xaml"/> <uriMapper:UriMapping Uri="/{pageName}" MappedUri="/Views/{pageName}.xaml"/> </uriMapper:UriMapper> </navigation:Frame.UriMapper> </navigation:Frame> </Border> <Grid x:Name="NavigationGrid" Style="{StaticResource NavigationGridStyle}"> <Border x:Name="BrandingBorder" Style="{StaticResource BrandingBorderStyle}"> <StackPanel x:Name="BrandingStackPanel" Style="{StaticResource BrandingStackPanelStyle}"> <ContentControl Style="{StaticResource LogoIcon}"/> <TextBlock x:Name="ApplicationNameTextBlock" Style="{StaticResource ApplicationNameStyle}" Text="Application Name"/> </StackPanel> </Border> <Border x:Name="LinksBorder" Style="{StaticResource LinksBorderStyle}"> <StackPanel x:Name="LinksStackPanel" Style="{StaticResource LinksStackPanelStyle}"> <HyperlinkButton x:Name="Link1" Style="{StaticResource LinkStyle}" NavigateUri="/Home" TargetName="ContentFrame" Content="home"/> <Rectangle x:Name="Divider1" Style="{StaticResource DividerStyle}"/> <HyperlinkButton x:Name="Link2" Style="{StaticResource LinkStyle}" NavigateUri="/About" TargetName="ContentFrame" Content="about"/> </StackPanel> </Border> </Grid> </Grid> Thanks in advance.

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  • Unhandled Exception with c++ app on Visual Studio 2008 release build - occurs when returning from fu

    - by Rich
    Hi, I have a (rather large) application that I have written in C++ and until recently it has been running fine outside of visual studio from the release build. However, now, whenever I run it it says "Unhandled exception at 0x77cf205b in myprog.exe: 0xC0000005: Access violation writing location 0x45000200.", and leads me to "crtexe.c" at line 582 ("mainret = main(argc, argv, envp);") if I attempt to debug it. Note that this problem never shows if I run my debug executable outside of visual studio, or if I run my debug or release build within visual studio. It only happens when running the release build outside of visual studio. I have been through and put plenty of printfs and a couple of while(1)s in it to see when it actually crashed, and found that the access violation occurs at exactly the point that the value is returned from the function (I'm returning a pointer to an object). I don't fully understand why I would get an access violation at the point it returns, and it doesn't seem to matter what I'm returning as it still occurs when I return 0. The point it started crashing was when I added a function which does a lot of reading from a file using ifstream. I am opening the stream every time I attempt to read a new file and close it when I finish reading it. If I keep attempting to run it, it will run once in about 20 tries. It seems a lot more reliable if I run it off my pen drive (it seems to crash the first 3 or 4 times then run fine after that - maybe it's due to its slower read speed). Thanks for your help, and if I've missed anything let me know.

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  • Good resources for building web-app in Tapestry

    - by Rich
    Hi, I'm currently researching into Tapestry for my company and trying to decide if I think we can port our pre-existing proprietary web applications to something better. Currently we are running Tomcat and using JSP for our front end backed by our own framework that eventually uses JDBC to connect to an Oracle database. I've gone through the Tapestry tutorial, which was really neat and got me interested, but now I'm faced with what seems to be a common issue of documentation. There are a lot of things I'd need to be sure that I could accomplish with Tapestry before I'd be ready to commit fully to it. Does anyone have any good resources, be it a book or web article or anything else, that go into more detail beyond what the Tapestry tutorial explains? I am also considering integrating with Hibernate, and have read a little bit about Spring too. I'm still having a hard time understanding how Spring would be more useful than cumbersome in tandem with Tapestry,as they seem to have a lot of overlapping features. An example I read seemed to use Spring to interface with Hibernate, and then Tapestry to Spring, but I was under the impression Tapestry integrates to the same degree with Hibernate. The resource I'm speaking of is http://wiki.apache.org/tapestry/Tapstry5First_project_with_Tapestry5,_Spring_and_Hibernate . I was interested because I hadn't found information anywhere else on how to maintain user levels and sessions through a Tapestry application before, but wasn't exactly impressed by the need to use Spring in the example.

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  • How to get all rows but specifc columns from a DataTable?

    - by Oliver
    Currently i am having some problems with getting some data out of a DataTable by selecting all rows, but only some columns. To be a little more descriptive here is a little example: Sample Data | ID | FirstName | LastName | Age | +----+-----------+----------+-----+ | 1 | Alice | Wannabe | 22 | | 2 | Bob | Consumer | 27 | | 3 | Carol | Detector | 25 | What i have So what we got from our GUI is a IEnumerable<DataColumn> selectedColumns and there we'll find two elements (FirstName and LastName). Now i need some result which contains all rows, but only the above two columns (or any other list of selected columns). So far i already used LINQ on several one dimensional objects, but this two dimensional object gives me a little headache. // The hard-coded way Table.AsEnumerable().Select(row => new { FirstName = row[1], LastName = row[2] }); // The flexible way Table.AsEnumerable().Select(row => row ???) But how can i now say, which columns from row should be selected by using my selectedColumns?

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  • Sudoku solver evaluation function

    - by Rich
    Hi, So I'm trying to write a simple genetic algorithm for solving a sudoku (not the most efficient way, I know, but it's just to practice evolutionary algorithms). I'm having some problems coming up with an efficient evaluation function to test if the puzzle is solved or not and how many errors there are. My first instinct would be to check if each row and column of the matrix (doing it in octave, which is similar to matlab) have unique elements by ordering them, checking for duplicates and then putting them back the way they were, which seems long winded. Any thoughts? Sorry if this has been asked before...

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  • iphone app submission errors

    - by Oliver
    When I try to add my application, I get Info.plist does not contain a CFBundleResourceSpecification and Application failed codesign verification. The signature was invalid, or it was not signed with an Apple submission certificate. I don't understand! I'm so frustrated, I finished my two apps and now I can't submit them. I checked the provisioning licenses and app ids and that whole process a many times over, I dunno what I'm doing wrong here. Can anyone help? :(

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  • Java JFrame method pack() problem

    - by Oliver
    Hi, I have a frame with 4 JPanels and 1 JScrollPane, the 4 panels are in border layout north, east, south, west and the scrollpane in the center. I have been trying to get the pack method for a frame fuctioning but when run you just get the title bar of the window. Any Ideas? Thank you in advance. JFrame conFrame; JPanel panel1; JPanel panel2; JPanel panel3; JPanel panel4; JScrollPane listPane; JList list; Object namesAr[]; ... ... ... namesAr= namesA.toArray(); list = new JList(namesAr); list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); list.setLayoutOrientation(JList.HORIZONTAL_WRAP); list.setVisibleRowCount(-3); list.addListSelectionListener(this); listPane = new JScrollPane(list); panel1 = new JPanel(); panel2 = new JPanel(); panel3 = new JPanel(); panel4 = new JPanel(); conFrame.setLayout(new BorderLayout()); panel1.setPreferredSize(new Dimension(100, 100)); panel2.setPreferredSize(new Dimension(100, 100)); panel3.setPreferredSize(new Dimension(100, 100)); panel4.setPreferredSize(new Dimension(100, 100)); panel1.setBackground(Color.red); panel2.setBackground(Color.red); panel3.setBackground(Color.red); panel4.setBackground(Color.red); conFrame.pack(); conFrame.add(panel1, BorderLayout.NORTH); conFrame.add(panel2, BorderLayout.EAST); conFrame.add(panel3, BorderLayout.SOUTH); conFrame.add(panel4, BorderLayout.WEST); conFrame.add(listPane, BorderLayout.CENTER); conFrame.setVisible(true);

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  • How do I fix this JBoss EJB client authentication issue?

    - by Rich
    I have an EJB deployed under JBoss (we're moving a project to it from Weblogic), I can get an EJBHome reference to the EJB via a JNDI lookup. The login-config.xml is set to use the module org.jboss.security.auth.spi.BaseCertLoginModule. When my client code tries to invoke the create method via reflection, calling invoke, I get an InvocationException which wraps an AccessException, which wraps a final exception of javax.security.auth.login.FailedLoginException: Password Incorrect/Password Required at org.jboss.security.auth.spi.UsernamePasswordLoginModule.login(UsernamePasswordLoginModule.java:213).... Am I missing some client code to use BaseCertLoginModule instead of UsernamePasswordLoginModule? Thanks in advance, any suggestions appreciated, apologies for not posting the entire stacktrace but it's on a secured network without internet access.

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  • is this valid json array using php

    - by Rich
    Hello, I need to convert some code done by someone else, to work in my mvc model It is using some functions like EOD that I don't understand. Does that still work in a class? Primarely, my question focusus on the json output. The old code does not use the php json_encode function, but outputs it directly like this ?> { "username": "<?php echo $_SESSION['username'];?>", "items": [ <?php echo $items;?> ] } <?php I would do it like this, but I need to be sure it's right for the items part header('Content-type: application/json'); $output = array("username"=> isset( $_SESSION['username'] ) ? $_SESSION['username'] : "?", "items"=>$items ); $this->content = json_encode($output); This is some background on how the $items is made. An item is stored like this: $_SESSION['chatHistory'][$_POST['to']] .= <<<EOD { "s": "1", "f": "{$to}", "m": "{$messagesan}" }, EOD; and it is put in the $items variable like this $items = ''; if ( !empty($_SESSION['openChatBoxes'] ) ) { foreach ( $_SESSION['openChatBoxes'] as $chatbox => $void ) { $items .= $this->chatBoxSession($chatbox); } } //The chatBoxSession() function takes an item from the $_SESSION['chatHistory'] array and returns it. I hope this was somewhat clear enough? The php manual warns that in some cases you don't get an array output, instead you get an object. So, with the EOD syntax, I am not really sure. It could save me some time if I know some things are doing what they supposed too, and giving the right output. thanks, Richard

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  • Is this PHP code secure?

    - by Oliver Bayes-Shelton
    Just a quick question: is the following PHP code secure? Also is there anything you think I could or should add? $post = $_GET['post']; if(is_numeric($post)) { $post = mysql_real_escape_string($post); } else { die("NAUGHTY NAUGHTY"); } mysql_select_db("****", $*****); $content = mysql_query("SELECT * FROM tbl_***** WHERE Id='" . $post . "'");

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