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  • Does Meta-refresh require a full url

    - by Roy Rico
    Does a meta refresh tag require a full url? I have code that looks like this, which seems to work just fine, but when I load it in lynx text browser, it says this is bad HTML. It seems to suggest that the full URL is required (http://mydomain.com/blah.htm).

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  • jquery-like HTML parsing in Python?

    - by Roy Tang
    Is there any Python library that allows me to parse an HTML document similar to what jQuery does? i.e. I'd like to be able to use CSS selector syntax to grab an arbitrary set of nodes from the document, read their content/attributes, etc. The only Python HTML parsing lib I've used before was BeautifulSoup, and even though it's fine I keep thinking it would be faster to do my parsing if I had jQuery syntax available. :D

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  • Is `xargs -t` output stderr or stdout, and can you control it?

    - by Roy Rico
    say i have a directory with hi.txt and blah.txt and i execute the following command on a linux-ish command line ls *.* | xargs -t -i{} echo {} the output you will see is echo blah.txt blah.txt echo hi.txt hi.txt i'd like to redirect the stderr output (say 'echo blah.txt' fails...), leaving only the output from the xargs -t command written to std out, but it looks as if it's stderr as well. ls *.* | xargs -t -i{} echo {} 2> /dev/null Is there a way to control it, to make it output to stdout?

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  • How do you make the scale animation begin at the middle of the object instead of the top left?

    - by Roy
    What I am trying to accomplish: 10 percent increase scale transformation of a rectangle via Silverlight storyboard animation. What I currently doing: While in Expression Blend 3, I created a rectangle, created a storyboard, and created the scale transformation. The preview looked correct because the increase in scale begins in the middle of the object. When I run the project the scale transformation begins at the top left. Is there some piece of code missing? Here is my current code: <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="TestingGroundsWebsite.MainPage" Width="640" Height="480"> <UserControl.Resources> <Storyboard x:Name="RectangleAppear"> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="rectangle" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0.1"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="1.1"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="1"/> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="rectangle" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0.1"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="1.1"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="1"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </UserControl.Resources> <Canvas x:Name="LayoutRoot" Background="White"> <Rectangle x:Name="rectangle" Fill="#FFE80000" Stroke="Black" Height="75" Width="76" Canvas.Left="227" Canvas.Top="167" RenderTransformOrigin="0.5,0.5"> <Rectangle.RenderTransform> <TransformGroup> <ScaleTransform/> <SkewTransform/> <RotateTransform/> <TranslateTransform/> </TransformGroup> </Rectangle.RenderTransform> </Rectangle> </Canvas> </UserControl> Thanks

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  • Using jQuery with form to eliminate spam

    - by Thierry-Dimitri Roy
    I have put a form on a web page where the user can send us data. Unfortunately, the webmaster does get a lot of spam through this form and the valid submissions gets buried. I have used captcha to bypass this problem. But I think that everyone would agree that captcha is a big annoyance to users. I switched to another solution: now the URL of the submit form points to null: <form id="sendDataForm" action="/null" method="post"> ... </form> And I bypass the form submission using jQuery excellent form plugin: $('#sendDataForm').ajaxForm({ url: '/ajax-data/' }); Since then, no spam has reached the webmaster, and valid comments gets through. The only drawbacks is that users without javascript cannot send us the form. But since this is on top of a javascript web application, we can safely assume that these are not valid users. My question is: in a world where 99% of users has javascript enabled (and a mechanism for those user could be build that uses captcha), why is this solution not more used? What drawback am I not seeing?

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  • how do you remove the navigation bar on Android?

    - by Thierry-Dimitri Roy
    When I listen to a YouTube video fullscreen in landscape on my Galaxy Nexus, the navigation bar on the right disapear after a few seconds (the bar which contains the "back", "home" and "recent apps" buttons ). I want to do the same thing when a user watch a video in my app. What is the code to hide the navigation bar? [UPDATE] Here is the bar I want to hide. Not the title bar, nor the action bar. The navigation bar. (the bar which contains the "back", "home" and "recent apps" buttons ). I also don't want to "dim" the buttons. I'm looking into removing the bar entirely (like the YouTube app does when you plan a video fullscreen in landscape mode)

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  • How to assess the risk of a java version upgrade?

    - by Roy Tang
    I'm being asked to assess whether we can safely upgrade the java version on one of our production-deployed webapps. The codebase is fairly large and we want to avoid having to regression test everything (no automated tests sadly), but we've already encountered at least one problem during some manual testing (XmlStringReader.getLocalName now throws an IllegalStateExeption when it just used to return null) and higher-ups are pretty nervous about the upgrade. The current suggested approach is to do a source compare of the JDK sources for each version and assess those changes to see which ones might have impact, but it seems there's a lot of changes to go through (and as mentioned the codebase is kinda large). Is it safe and easier to just review the java version changes for each version? Or is there an easier way to conduct this assessment? Edit: I forgot to mention the version upgrade being considered is a minor version upgrade, i.e. 1.6.10 to 1.6.33

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  • Get count matches in query on large table very slow

    - by Roy Roes
    I have a mysql table "items" with 2 integer fields: seid and tiid The table has about 35000000 records, so it's very large. seid tiid ----------- 1 1 2 2 2 3 2 4 3 4 4 1 4 2 The table has a primary key on both fields, an index on seid and an index on tiid. Someone types in 1 or more tiid values and now I would like to get the seid with most results. For example when someone types 1,2,3, I would like to get seid 2 and 4 as result. They both have 2 matches on the tiid values. My query so far: SELECT COUNT(*) as c, seid FROM items WHERE tiid IN (1,2,3) GROUP BY seid HAVING c = (SELECT COUNT(*) as c, seid FROM items WHERE tiid IN (1,2,3) GROUP BY seid ORDER BY c DESC LIMIT 1) But this query is extremly slow, because of the large table. Does anyone know how to construct a better query for this purpose?

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  • Select where a value present

    - by Roy
    First a database example: id, product_id, cat, name, value -------------------------------- 1,1,Algemeen,Processor,2 Ghz 2,1,Algemeen,Geheugen,4 GB 3,2,Algemeen,Processor,3 Ghz 4,2,Algemeen,Geheugen,4 GB 5,3,Beeldscherm,Inch,22" 6,3,Beeldscherm,Kleur,Zwart 7,3,Algemeen,Geheugen,3 GB 8,3,Algemeen,Processor,3 Ghz I want with one query to select the follow id's: 1,2,3,4,7,8 Because the cat = algemeen and the name = processor by these products. ID 5,6 are only present by product 3. So, the entry's (cat and name) which are present by all products (product_id) have to be selected. The database contains 80.000 entry's with a lot of diffrent cat's, name's and value's. Is this possible with one query or is some php necessary? How do I do this? My apologies for the bad English.

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  • Silverlight Cream for February 04, 2011 -- #1040

    - by Dave Campbell
    In this Issue: Shawn Wildermuth, John Papa, Jesse Liberty(-2-), Mike Wolf, Matt Casto, Levente Mihály, Roy Dallal, Mark Monster, Andrea Boschin, and Oren Gal. Above the Fold: Silverlight: "Accept and Cancel Buttons Behavior in Silverlight" Matt Casto WP7: "Windows Phone 7 Runtime Debugging" Mike Wolf Shoutouts: Al Pascual announced a get-together if you're going to be in Phoenix on February 10 (next Thursday)... I just can't tell what time it is from the page: Phoenix Dev Meet-Up From SilverlightCream.com: Ten Pet Peeves of WP7 Applications Check out Shawn Wildermuth's Top 10 annoyances when trying out any new app on the WP7... if you're a dev, you might want to keep these in mind. Silverlight TV 60: Checking Out the Zero Gravity Game, Now on Windows Phone 7 John Papa has Silverlight TV number 60 up and this one features Phoenix' own Ryan Plemons discussing the game Zero Gravity and some of the things he had to do to take the game to WP7 ... and the presentation looks as good from here as it did inside the studio :) The Full Stack: Entity Framework To Phone, The Server Side Jesse Liberty and Jon Galloway have Part 6 of their full-stack podcast up ... this is their exploration of MVC3, ASP.NET, Silverlight, and WP7... pair programming indeed! Life Cycle: Page State Management Jesse Liberty also has episode 29 (can you believe that??) of his Windows Phone From Scratch series up ... he's continuing his previous LifeCycle discussion with Page State Management this time. Windows Phone 7 Runtime Debugging Mike Wolf is one of those guys that when he blogs, we should all pay attention, and this post is no exception... he has contributed a run-time diagnostics logger to the WP7Contrib project ... wow... too cool! Accept and Cancel Buttons Behavior in Silverlight Matt Casto has his blog back up and has a behavior up some intuitive UX on ChildWindows by being able to bind to a default or cancel button and have those events activated when the user hits Enter or Escape... very cool, Matt! A classic memory game: Part 3 - Porting the game to Windows Phone 7 Levente Mihály has Part 3 of his tutorial series up at SilverlightShow, and this go-around is porting his 'memory game' to WP7... and this is pretty all-encompassing... Blend for the UI, Performance, and Tombstoning... plus all the source. Silverlight Memory Leak, Part 1 Roy Dallal completely describes how he used a couple easily-downloadable tools to find the root cause of his memory problems with is Silvleright app. Lots of good investigative information. How to cancel the closing of your Silverlight application (in-browser and out-of-browser) Mark Monster revisits a two-year old post of his on cancelling the closing of a Silverlight app... and he's bringing that concept of warning the user the he's about to exit into the OOB situation as well. Windows Phone 7 - Part #3: Understanding navigation Also continuing his WP7 tutorial series on SilverlightShow, Andrea Boschin has part 3 up which is all about Navigation and preserving state... he also has a video on the page to help demonstrate the GoBack method. Multiple page printing in Silverlight 4 Oren Gal built a Silverlight app for last years' ESRI dev summit, and decided to upgrade it this year with functionality such as save/restore, selecting favorite sessions, and printing. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for February 07, 2011 -- #1043

    - by Dave Campbell
    In this Issue: Roy Dallal, Kevin Dockx, Gill Cleeren, Oren Gal, Colin Eberhardt, Rudi Grobler, Jesse Liberty, Shawn Wildermuth, Kirupa Chinnathambi, Jeremy Likness, Martin Krüger(-2-), Beth Massi, and Michael Crump. Above the Fold: Silverlight: "A Circular ProgressBar Style using an Attached ViewModel" Colin Eberhardt WP7: "Isolated Storage" Jesse Liberty Lightswitch: "How To Create Outlook Appointments from a LightSwitch Application" Beth Massi Shoutouts: Gergely Orosz has a summary of his 4-part series on Styles in Silverlight: Everything a Developer Needs To Know From SilverlightCream.com: Silverlight Memory Leak, Part 2 Roy Dallal has part 2 of his memory leak posts up... and discusses the results of runnin VMMap and some hints on how to make best use of it. Using a Channel Factory in Silverlight (instead of adding a Service Reference). With cows. Kevin Dockx has a post up for those of you that don't like the generated code that comes about when adding a service reference, and the answer is a Channel Factory... and he has an example app in the post that populates a list of cows... honest ... check it out. Getting ready for Microsoft Silverlight Exam 70-506 (Part 4) Gill Cleeren has Part 4 of his deep-dive into studying for the Silverlight Certification exam. This time out he's got probably half a gazillion links for working with data... seriously! Sync unlimited instances of one Silverlight application How about a cross-browser sync of an unlimited number of instances of the same Silverlight app... Oren Gal has just that going on, and discusses his first two attempts and how he finally honed in on the solution. A Circular ProgressBar Style using an Attached ViewModel Wow... check out what Colin Eberhardt's done with the "Progress Bar" ... using an Attached View Model which he discussed in a post a while back... these are awesome! WP7 - Professional Audio Recorder Rudi Grobler discusses an audio recorder for WP7 that uses the NAudio audio library for not only the recording but visualization. Isolated Storage Jesse Liberty's got his 30th 'From Scratch' post up and this time he's talking about Isolated Storage. Learning OData? MSDN and Shawn Wildermuth has the videos for you! Shawn Wildermuth produced a couple series of videos for MSDN on OData: Getting Started and Consuming OData... get the link on Shawn's post. Creating Sample Data from a Class - Page 1 Kirupa Chinnathambi shows us how to use a schema of your own design in Blend... yet still have Blend produce sample data A Pivot-Style Data Grid without the DataGrid Jeremy Likness discusses the lack of an open-source grid with dynamic columns ... let him know if you've done one! ... and then he continues on to demonstrate his build-out of the same. Synchronize a freeform drawing and a real path creation Martin Krüger has a few new samples up in the Expression Gallery. This first is taking mouse movement in an InkPresenter and creating path statements from it in a canvas and playing them back. How to: use Storyboard completed behaviors Martin Krüger's next post is about Storyboards and firing one off the end of another, in Blend... so he ended up producing a behavior for doing that... and it's in the Expression Gallery How To Create Outlook Appointments from a LightSwitch Application Beth Massi has a new Lightswitch post up... her previous was email from Lightswitch... this is Outlook appointments... pretty darn cool. Quick run through of the WP7 Developer Tools January 2011 Michael Crump has a really good Quick look at the new WP7 Dev Tools that were released last week posted on his blog Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for February 06, 2011 -- #1042

    - by Dave Campbell
    In this Issue: Mike Taulty, Timmy Kokke, Laurent Bugnion, Arik Poznanski, Deyan Ginev, Deborah Kurata(-2-), Johnny Tordgeman, Roy Dallal, Jaime Rodriguez, Samuel Jack(-2-), James Ashley. Above the Fold: Silverlight: "Customizing Silverlight properties for Visual Designers" Timmy Kokke WP7: "Back button press when using webbrowser control in WP7" Jaime Rodriguez Expression Blend: "Blend Bits 21–Importing from Photoshop & Illustrator…" Mike Taulty From SilverlightCream.com: Blend Bits 21–Importing from Photoshop & Illustrator… Mike Taulty is up to 21 episodes on his Blend Bits sequence now, and this one is about using Blend's import capability, such as a .psd file with all the layers intact. Customizing Silverlight properties for Visual Designers Timmy Kokke has part 1 of 2 parts on making your Silverlight control properties in design surfaces such as Visual Studio designer or Expression Blend. An error when installing MVVM Light templates for VS10 Express Laurent Bugnion has released a new version of MVVMLight that resolves a problem with VS2010 Express version of the templates... no problem with anything else. Reading RSS items on Windows Phone 7 Arik Poznanski has a post up about reading RSS on a WP7, but better yet, he also has code for a helper class that you can grab, plus explanation of wiring it up. Integrating your Windows Phone unit tests with MSBuild #4: The WP7 Unit Test Application Deyan Ginev has a post up about Telerik's WP7 test app that outputs test results in XML from the emulator so they can be integrated with the MSBuild log. Accessing Data in a Silverlight Application: EF I apprently missed this post by Deborah Kurata last week on bringing data into your Silverlight app via Entity Frameworks... good detailed tutorial in VB and C#. Updating Data in a Silverlight Application: EF In Deborah Kurata's latest post, she is continuing with Entity Frameworks by demonstrating updating to the database... full source code will be produced in a later post. Fun with Silverlight and SharePoint 2010 Ribbon Control - Part 2 - An In Depth Look At The Ribbon Control Johnny Tordgeman has Part 2 of his Silverlight and Sharepoint 2010 Ribbon up... taking a deep-dive into the ribbon... great explanation of the attributes, code included. Geographic Coordinates Systems Roy Dallal has some Geo code up that's not necessarily Silverlight, but very cool if you're doing any GIS programming... ya gotta know the coordinate systems! Back button press when using webbrowser control in WP7 Jaime Rodriguez has a post up discussing the much-lamented back-button action in the certification requirements and how to deal with that in a web browser app. Multiplayer-enabling my Windows Phone 7 game: Day 1 Samuel Jack challenged himself to build a WP7 game in 3 days... now he's challenging himself to make it multiplayer in 3 days... this first hour-to-hour post is research of networking and an azure server-side solution. Multiplayer-enabling my Windows Phone 7 game: Day 2–Building a UI with XPF Day 2 for Samuel Jack getting the multiplayer portion of his game working in 3 days.. this day involves getting up-to-speed with XPF. How to Hotwire your WP7 Phone Battery Did you realize if you run your WP7 battery completely down that you can't charge it? James Ashley reports that circumstance, and how he resolved it. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • WebView and Cookies on Android

    - by dave smith
    I have an application on appspot that works fine through regular browser, however when used through Android WebView, it cannot set and read cookies. I am not trying to get cookies "outside" this web application BTW, once the URL is visited by WebView, all processing, ids, etc. can stay there, all I need is session management inside that application. First screen also loads fine, so I know WebView + server interactivity is not broken. I looked at WebSettings class, there was no call like setEnableCookies. I load url like this: public class MyActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); WebView webview = new WebView(this); setContentView(webview); webview.loadUrl([MY URL]); } .. } Any ideas?

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  • protobuf-net: Issues deserializing DataMember fields in lieu of read-only property

    - by Paul Smith
    I'm having issues deserializing certain properties of ORM-generated entities using protobuf-net. I suspect something in the way the ORM manages serialization attributes on read-only properties (uses public backing fields with DataMember attributes & [de]serializes) those instead of the corresponding read-only property, which has an IgnoreDataMember attribute). Guid properties might have issues of their own, but the field vs. property thing is my working theory now. Here's a simplified example of the code. Say I have a class, Account with an AccountID read-only guid, and an AccountName read-write string. I serialize & immediately deserialize a clone. In this scenario I get one of two results (depending on the entity, haven't isolated the specific commonality yet). The deserialized clone either: ...has a different AccountID from the original, or ...throws an Incorrect wire-type deserializing Guid exception while deserializing. Here's example usage... Account acct = new Account() { AccountName = "Bob's Checking" }; Debug.WriteLine(acct.AccountID.ToString()); using (MemoryStream ms = new MemoryStream()) { ProtoBuf.Serializer.Serialize<Account>(ms, acct); Debug.WriteLine(Encoding.UTF8.GetString(ms.GetBuffer())); ms.Position = 0; Account clone = ProtoBuf.Serializer.Deserialize<Account>(ms); Debug.WriteLine(clone.AccountID.ToString()); } And here's an example ORM'd class (simplified; hopefully haven't removed the cause of the issue in the process). Uses a shell game to deserialize read-only properties by exposing the backing field ("can't write" essentially becomes "shouldn't write," but we can scan code for instances of assigning to these fields, so the hack works for our purposes): [DataContract()] [Serializable()] public partial class Account { public Account() { _accountID = Guid.NewGuid(); } [XmlAttribute("AccountID")] [DataMember(Name = "AccountID", Order = 0)] public Guid _accountID; /// <summary> /// A read-only property; XML, JSON and DataContract serializers all seem /// to correctly recognize the public backing field when deserializing: /// </summary> [IgnoreDataMember] [XmlIgnore] public Guid AccountID { get { return this._accountID; } } [IgnoreDataMember] protected string _accountName; [DataMember(Name = "AccountName", Order = 1)] [XmlAttribute] public string AccountName { get { return this._accountName; } set { this._accountName = value; } } } XML, JSON and DataContract serializers all seem to serialize / deserialize matching object graphs here, so this attribute arrangement apparently causes those serializers to correctly assign to the public backing field when deserializing. I've tried protobuf-net with lists vs. single instances, different prefix styles, etc., but always either get the 'incorrect wire type ... Guid' exception, or the Guid property (field) not deserializing correctly. So the specific questions are, is there a quick workaround for this, and/or is there an explanation for both of outcomes 1 & 2 above, and/or can protobuf-net somehow be corralled into behaving like WCF in cases like this (i.e. follow the same DataMember/IgnoreDataMember semantics)? We hope not to have to create a protobuf dependency directly in the entity layer; if that's the case, we'll probably create proxy DTO entities with all public properties having protobuf attributes. (This is a subjective issue I have with all declarative serialization models; it's a ubiquitous pattern, but IMO, "normal" should be to have objects and serialization contracts decoupled.) Thanks!

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  • Android orientation change causes ImageView to dissapear

    - by Jarrod Smith
    Below is my layout for the row template in a SimpleCursorAdapter. The ImageView with id next_arrow disappears on orientation change. If I replace @drawable/arrow with @drawable/icon (copy of the standard sym_def_app_icon) it works fine. I thought it might be somehow related to the icons being of different dimensions, but I resized @drawable/icon to be the exact same dimensions as the arrow and it still worked fine while the arrow didn't. <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="90dp" android:background="@drawable/product_list_divider" android:paddingTop="10dp"> <ImageView android:src="@drawable/ninja_20_65" android:id="@+id/category_icon" android:layout_marginLeft="20dp" android:layout_marginRight="20dp" android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_marginTop="3dp"/> <LinearLayout android:orientation="vertical" android:layout_weight="5" android:layout_width="0dp" android:layout_height="wrap_content"> <TextView android:id="@+id/category_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Name" style="@style/CategoryHeading" android:layout_marginTop="5dp"/> <TextView android:id="@+id/category_description" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Description" style="@style/CategoryDescription"/> </LinearLayout> <ImageView android:src="@drawable/arrow" android:layout_weight="1" android:layout_width="0dp" android:layout_marginRight="10dp" android:layout_height="wrap_content" android:layout_marginTop="20dp" android:id="@+id/next_arrow"/> </LinearLayout>

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  • protobuf-net: incorrect wire-type exception deserializing Guid properties

    - by Paul Smith
    I'm having issues deserializing certain Guid properties of ORM-generated entities using protobuf-net. Here's a simplified example of the code (reproduces most elements of the scenario, but doesn't reproduce the behavior; I can't expose our internal entities, so I'm looking for clues to account for the exception). Say I have a class, Account with an AccountID read-only guid, and an AccountName read-write string. I serialize & immediately deserialize a clone. Deserializing throws an Incorrect wire-type deserializing Guid exception while deserializing. Here's example usage... Account acct = new Account() { AccountName = "Bob's Checking" }; Debug.WriteLine(acct.AccountID.ToString()); using (MemoryStream ms = new MemoryStream()) { ProtoBuf.Serializer.Serialize<Account>(ms, acct); Debug.WriteLine(Encoding.UTF8.GetString(ms.GetBuffer())); ms.Position = 0; Account clone = ProtoBuf.Serializer.Deserialize<Account>(ms); Debug.WriteLine(clone.AccountID.ToString()); } And here's an example ORM'd class (simplified, but demonstrates the relevant semantics I can think of). Uses a shell game to deserialize read-only properties by exposing the backing field ("can't write" essentially becomes "shouldn't write," but we can scan code for instances of assigning to these fields, so the hack works for our purposes). Again, this does not reproduce the exception behavior; I'm looking for clues as to what could: [DataContract()] [Serializable()] public partial class Account { public Account() { _accountID = Guid.NewGuid(); } [XmlAttribute("AccountID")] [DataMember(Name = "AccountID", Order = 1)] public Guid _accountID; /// <summary> /// A read-only property; XML, JSON and DataContract serializers all seem /// to correctly recognize the public backing field when deserializing: /// </summary> [IgnoreDataMember] [XmlIgnore] public Guid AccountID { get { return this._accountID; } } [IgnoreDataMember] protected string _accountName; [DataMember(Name = "AccountName", Order = 2)] [XmlAttribute] public string AccountName { get { return this._accountName; } set { this._accountName = value; } } } XML, JSON and DataContract serializers all seem to serialize / deserialize these object graphs just fine, so the attribute arrangement basically works. I've tried protobuf-net with lists vs. single instances, different prefix styles, etc., but still always get the 'incorrect wire-type ... Guid' exception when deserializing. So the specific questions is, is there any known explanation / workaround for this? I'm at a loss trying to trace what circumstances (in the real code but not the example) could be causing it. We hope not to have to create a protobuf dependency directly in the entity layer; if that's the case, we'll probably create proxy DTO entities with all public properties having protobuf attributes. (This is a subjective issue I have with all declarative serialization models; it's a ubiquitous pattern & I understand why it arose, but IMO, if we can put a man on the moon, then "normal" should be to have objects and serialization contracts decoupled. ;-) ) Thanks!

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  • Using SetWindowTheme() on controls in WindowsFormsHost in WPF?

    - by Eric Smith
    I have an application I'm developing which closely mirrors Windows 7's Device Stage. In Device Stage, beneath the main banner there is a ListView containing actions embodied as ListViewItems. In my WPF application, I used WindowsFormsHost to host a WinForms ListView so that I could use SetWindowTheme() on it and apply Windows Vista/7 styling to it. This, however, does not work and doesn't achieve the same effect it does when used in Windows Forms. How can I achieve the Windows 7 look on a ListView in WPF? I'm not looking to create a custom style then apply it because frankly that's too much of a pain in the ass to continue using WPF for this app. Thanks! :)

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  • Entity Framework - Using Transactions or SaveChanges(false) and AcceptAllChanges()?

    - by mark smith
    Hi there, I have been investigating transactions and it appears that they take call of them selves in EF as long as i pass false to savechanges.. SaveChanges(false) and if all goes well then AcceptAllChanges() Question is what is something goes bad, don't have to rollback? or as soon as the my method goes out of scope its ended? What happens to any indentiy columns that were assigned half way through the transaction.. i presume if somebody else added a record after mine before mine went bad then this means there will be a missing Identity value. Is there any reason to use standard "transactionScope" in code? ideas? - thanks

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  • Objective-C++ compiles for iPhone, but not simulator

    - by John Smith
    I have a C++ library I want to add to my iphone project. In one header file I declare @class a { cppvirtualclass V; } This compiles fine for the iPhone device with Release settings. However it refuses to compile for the Simulator with or without debug info. It give the error error: type 'V' has virtual member functions. Is there a way out of this or do I have to define only concrete C++ classes?

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  • Link between low level drivers and tty drivers

    - by agent.smith
    I was writing a console driver for linux and I came across the tty interface that I need to set up for this driver. I got confused as to how tty drivers are bound with low-level drivers. Many times the root file system already contains a lot of tty devices. I am wondering how low-level devices can bind to one of the existing tty nodes on the root file system. For example, /dev/tty7 : Node on the root file system. How does a low-level device driver connect with this node? Or should that low-level device define a completely new tty device?

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  • how to return C++ pointer in objective-C++

    - by John Smith
    I have the following objective-C++ header with the simple method to return this pointer. @interface MyObj { MyCPPObj * cpp; } -(MyCPPObj *) getObj; I have created the simple method @implementation MyObj -(MyCPPObj *) getObj { return cpp; } Everything seems to work until I actually try to use the object in another file newObj = [createdMyObj getObj]; It complains: error: cannot convert 'objc_object*' to 'MyCPPObje *' in initialization. It seems that the method is return an objective-c object, but I specifically requested a C++ pointer. How can I fix that?

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