George Birbilis' blog

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Fix: “The Global element ‘xx’ has already been declared” warnings in config files after .NET framework upgrade in Visual Studio solution 04 Απριλίου 19 05:09 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Had just converted to target .NET framework 4.7.2 a Visual Studio solution full of 4.5 libraries, console apps and an MVC 5.0 (recently converted from 4.0) web app and all seemed to build fine, but then noticed that with web.config of the MVC web app open in the editor, it was showing lots of warnings […]

Δημοσίευση στην κατηγορία: .NET, Posts, Fix, XML, Visual Studio, Upgrade, XSD, Warnings, Target, Config
Getting resulting SQL string from parametric ADO.net SqlCommand 19 Σεπτεμβρίου 18 07:18 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Microsoft is suggesting to always use Named parameters with SqlCommands for security reasons (to avoid SQL injection exploits), but they haven’t thought of providing a property at SqlCommand to give you back the result SQL so that you can have your app log it without resorting to SQL Server for that logging. Found a solution […]

Δημοσίευση στην κατηγορία: .NET, Posts, Workarround, SqlCommand, SQL, Logging, ADO.net, Parameters
Difference between LocalizableAttribute and LocalizabilityAttribute in .NET 30 Νοεμβρίου 15 02:22 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: I’ve just updated an older answer of mine at: https://social.msdn.microsoft.com/Forums/vstudio/en-US/716ef041-0a59-4c1d-9519-e14db4de7e75/localizability-vs-localizable-attributes-in-control-dev?forum=wpf In case you’re wondering too what’s the difference between Localizable and Localizability attributes in .NET, maybe this helps a bit: https://msdn.microsoft.com/en-us/library/ms753944(v=vs.100).aspx LocalizableAttribute – Specifies whether a property should be localized LocalizabilityAttribute – Specifies the localization attributes for a binary XAML (BAML) class or class member […]

Δημοσίευση στην κατηγορία: .NET, Posts, WPF, Localization, Properties, Smart Classroom, Difference
Managed .NET Speech API links 24 Αυγούστου 15 03:11 πμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: (this is my answer at http://stackoverflow.com/questions/14771474/voice-recognition-in-windows) I’m looking into adding speech recognition to my fork of Hotspotizer Kinect-based app (http://github.com/birbilis/hotspotizer) After some search I see you can’t markup the actionable UI elements with related speech commands in order to simulate user actions on them as one would expect if Speech input was integrated in WPF. […]

Δημοσίευση στην κατηγορία: .NET, Windows, Posts, WPF, Links, Input, Smart Classroom, Recognition, Voice, Speech
Structuring (physical) source and (virtual) solution folders for portability 05 Ιουνίου 15 06:40 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Copying here those comments of mine at a discussion on the GraphX project: https://github.com/panthernet/GraphX/issues/21 describing the source code (physical) folder structure and the Visual Studio solution (virtual) folder structure I’ve been using at ClipFlair and other multi-platform projects. —— looking at the folders/projects/libraries/namespaces naming, I think it would be more appropriate to add the platform […]

Δημοσίευση στην κατηγορία: .NET, Suggestions, Posts, VisualStudio, Structured, ClipFlair, Source, Folders, AmnesiaOfWho, GraphX, Architecture, Xamarin, Porting
Source code analyzers for .NET porting & Portable Class Libraries (PCL) 05 Ιουνίου 15 06:04 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: .NET Portability Analyzer extension https://visualstudiogallery.msdn.microsoft.com/1177943e-cfb7-4822-a8a6-e56c7905292b API Portability Analyzer – Alpha (command-line version) http://www.microsoft.com/en-us/download/details.aspx?id=42678 PLIB API XLS https://onedrive.live.com/view.aspx?resid=8A7FB4A4B32FB2C9!180&app=Excel&authkey=!AHaBmLAhQ49YCI0 Xamarin Scanner (How Mobile is your .NET code?) http://scan.xamarin.com/ Tagged: .NET, Analysis, API, ClipFlair, GraphX, PCL, Porting, Source, Xamarin

Δημοσίευση στην κατηγορία: .NET, Posts, ClipFlair, Source, API, GraphX, Xamarin, Porting, PCL, Analysis
HowTo: Use MEF to implement import/export etc. plugin architecture 03 Ιουνίου 15 01:13 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Copying here my comment at a discussion on the GraphX project: https://github.com/panthernet/GraphX/pull/15 in case it helps somebody in using MEF (Managed Extensibility Framework) in their software’s architecture ——– Using static classes instead of interfaces can mean though that you need to use reflection to call them (e.g. if you wan to have a list of […]

Δημοσίευση στην κατηγορία: .NET, Posts, ClipFlair, Extensions, HowTo, Plugins, GraphX, MEF, Architecture
HowTo: Install .NET 3.5 component in Windows 8.1 12 Δεκεμβρίου 14 02:55 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: I just installed .NET 3.5 on a Windows Enterprise 8.1 system that was failing to bring the needed files from the network To do this I opened a command prompt with elevated rights and ran a single command, having the Windows DVD at drive F: Dism /online /enable-feature /featurename:NetFx3 /All /Source:F:\sources\sxs /LimitAccess as explained at […]

Δημοσίευση στην κατηγορία: .NET, Posts, CommandLine, HowTo, Windows 8, .NET 3.5, Installation, Enterprise
Gotcha: System.IO.GetInvalidPathChars result not guaranteed 04 Απριλίου 14 12:54 πμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: at System.IO.Path.GetInvalidPathChars one reads: The array returned from this method is not guaranteed to contain the complete set of characters that are invalid in file and directory names note: can also call this method from non-trusted Silverlight app – not as Intellisense tooltip wrongly says in Visual Studio 2013 with Silverlight 5.1 I just found […]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, ClipFlair, RegEx, Gotcha, Replace, Characters, Invalid, Filename
Gotcha: .NET Point and PointConverter inconsistency in string format used 22 Νοεμβρίου 13 01:47 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: I have submitted the following issue to Microsoft Connect (product feedback center): http://connect.microsoft.com/VisualStudio/feedback/details/809084/point-class-issue-with-two-way-databinding Point class issue with two-way databinding In Silverlight, when using databinding code like the following: <StackPanel Orientation="Vertical" Name="propPosition"> <sdk:Label Style="{StaticResource PropertyLabelStyle}" Content="Position:" Target="{Binding ElementName=edPosition}" /> <TextBox Name="edPosition" Text="{Binding Position, Mode=TwoWay, ValidatesOnExceptions=True, NotifyOnValidationError=true}" /> </StackPanel> and binding (via DataContext) to […]

Δημοσίευση στην κατηγορία: .NET, UI, Posts, Bugs, ClipFlair, Gotcha, Binding, String, Conversion, PointConverter, Point
HowTo: Display version information on WinForm title 20 Αυγούστου 13 11:39 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: This is my contribution to http://stackoverflow.com/questions/7178725/version-number-in-winform-form-text I’m using the following at the WinForm of the WebCapture tool I’m making for ClipFlair: public MainForm() { InitializeComponent(); Version version = Assembly.GetExecutingAssembly().GetName().Version; Text = Text + " " + version.Major + "." + version.Minor + " (build " + version.Build + ")"; //change form title } Not showing […]

Δημοσίευση στην κατηγορία: .NET, Posts, ClipFlair, HowTo, WinForms, Version
HowTo: Save screenshot of a control hosted on a WinForm 20 Αυγούστου 13 06:38 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: I’m trying to automate grabbing of activity screenshots from ClipFlair Activity Gallery, but most command-line screen capturing tools, like SiteShoter and IECapt fail to get an image from Silverlight content (they get just a background color). Some other opensource tool that I could tweek was ThumbPage, but that didn’t support command-line and needed to disable […]

Δημοσίευση στην κατηγορία: .NET, Posts, ClipFlair, Controls, HowTo, Screenshot, WinForms, GDI+
HowTo: Bind ASP.net control to list of files or folders 15 Ιουλίου 13 03:33 πμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: At from ClipFlair Gallery metadata input pages for Activities and Clips I had to bind an ASP.net control to a list of files and folders respectively and although I found a Folder Contents DataSource control, it didn’t cover my needs (like filtering of a folder contents). I just contributed my solution using .NET Anonymous Types and […]

Δημοσίευση στην κατηγορία: .NET, Filters, Posts, Filesystem, Lists, ClipFlair, Controls, HowTo, ASP.net, Binding, Data, Filename, Folders
HowTo: Remove invalid filename characters in .NET 12 Ιουλίου 13 11:28 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: In ClipFlair Studio I use DotNetZip (Ionic.Zip) library for storing components (like the activity and its nested child components) to ZIP archives (.clipflair or .clipflair.zip files). Inside the ZIP archive its child components have their own .clipflair.zip file and so on (so that you could even nest activities at any depth) which construct their filename […]

Δημοσίευση στην κατηγορία: Security, .NET, Filters, Posts, Filesystem, ClipFlair, RegEx, String, Array, Characters, Invalid, Filename, Conversion
.NET String extension methods to check for array of prefixes or suffixes 05 Απριλίου 13 10:51 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Seems StartsWith and EndsWith methods of String class in .NET are missing a version that accepts multiple (as an array) prefixes or suffixes respectively when testing the string. To achieve this I just added the following extension methods to StringExtensions class (of Utils.Extensions namespace) under Utils.Silverlight project at the ClipFlair source code. public static bool [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Class, ClipFlair, Extensions, Prefix, String, Suffix, CurrentCulture, StringComparison, Methods, StartsWith, Array, EndsWith
.NET String class extensions to replace prefix or suffix 26 Μαρτίου 13 05:47 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Just added the following extension methods to StringExtensions class (of Utils.Extensions namespace) under Utils.Silverlight project at the ClipFlair source code. public static string ReplacePrefix( this string s, string fromPrefix, string toPrefix, StringComparison comparisonType) { return (s.StartsWith(fromPrefix, comparisonType)) ? toPrefix + s.Substring(fromPrefix.Length) : s; } public static string ReplacePrefix( this string s, string[] fromPrefix, string toPrefix, [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Class, ClipFlair, Extensions, Prefix, Methos, String, Replace, Suffix
HowTo: format XML output of DataContractSerializer 22 Φεβρουαρίου 13 04:52 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: based on the other samples posted at StackOverflow on how to format XML created by DataContractSerializer, that use XmlWriter, here’s a version (from ClipFlair source code) that works with streams (and Ionic.Zip library in specific). It also shows how the code is when you don’t apply formatting (using conditional compilation). Just comment out the #define [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, ClipFlair, HowTo, XML, ZIP, Contracts, Data, Serialization, Formatting
HowTo: load CaptionElements into Silverlight Media Framework player 03 Σεπτεμβρίου 12 03:38 πμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Trying to make CaptionsGridWindow of ClipFlair serve captions editing on-the-fly to SMF (Silverlight Media Framework [now called MMPPF]) player component, I had a real hard time, plagued by a bug at TimedTextElementStyle. It seems to be setting default FontSize for captions using a “Cell” unit instead of using a “Pixel” unit. Currently SMF only supports [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Bugs, Silverlight, ClipFlair, HowTo, Captioning, SMF, MMPPF, Multimedia
HowTo: Scale control arround its center using a render transform 15 Αυγούστου 12 07:02 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: In the context of ClipFlair development, I was recently adding independent scaling (zooming) functionality to its ZUI container’s floating windows (apart from the container zooming functionality) and came across some strange behavior, where the windows seemed to also move apart from getting scaled. After banging my head a bit I decided to take a closer [...]

Δημοσίευση στην κατηγορία: .NET, Transforms, UI, Posts, WPF, Silverlight, ClipFlair, ZUI, HowTo, Scaling
HowTo: Bind to a DataContext property named Source in XAML 14 Αυγούστου 12 03:27 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: While refactoring ClipFlair code to use MVVM (Model-View-ViewModel) pattern, I came across the XAML error “Object reference not set to an instance of an object.”, shown in Visual Studio when trying to bind to my ViewModel (accessed implicitly, being set as the DataContext of the XAML control) for a property named Source. I have settled [...]

Δημοσίευση στην κατηγορία: .NET, Posts, WPF, Silverlight, XAML, ClipFlair, HowTo, Image, Properties, MVVM, Binding, Source
Gotcha: Silverlight DependencyProperty metadata: 0d not 0 for double 09 Αυγούστου 12 11:38 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Just came accross a runtime error message that troubled me a bit to resolve while adding Prezi-like content scaling functionality in ClipFlair‘s FloatingWindowHostZUI (ZUI = Zoomable User Interface) container. I had added the following: /// Identifies the <see cref="FloatingWindow.Scale" /> dependency property. /// </summary> /// <value> /// The identifier for the <see cref="FloatingWindow.Scale" /> dependency [...]

Δημοσίευση στην κατηγορία: .NET, Posts, WPF, Silverlight, XAML, ClipFlair, ZUI, Gotcha, Runtime, DependencyProperty, XAMLParseException, PropertyMetadata
HowTo: Compress speech audio using CSpeex codec at Silverlight apps 04 Αυγούστου 12 07:15 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Following up on my post on how to fix CSpeex (http://cspeex.codeplex.com) to compile at Silverlight 5 (see http://zoomicon.wordpress.com/2012/06/09/fix-compile-cspeex-audio-codec-at-silverlight-4-rc-and-silverlight-5/). Initially I thought it was not working correctly, but then I noticed I was running it on Terminal Server and didn’t have an audio device available. Running SLAudioDemo included in the CSpeex distribution (after doing the fix [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, ClipFlair, Codec, Speex, Audio, HowTo, Compression
Gotcha: Silverlight’s Uri class constructor eats up part after last slash 22 Ιουλίου 12 10:54 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: Via trial and error, I recently found out that when creating a Uri combining another Uri and a suffix part (tried at Silverlight, but I guess it’s a .NET issue in general), it eats up the last part of the (first) Uri if it doesn’t end with "/". That is, if you combine http://test.com/a with [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, ClipFlair, Uri, Workarround, Gotcha, URL
Fix: The tag ‘TimeUpDown’ does not exist in XML namespace (Silverlight Toolkit) 14 Ιουλίου 12 07:59 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: If you use TimeUpDown control from Silverlight Toolkit in your XAML like below (copy pasting from CaptionGrid at ClipFlair source): <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <DataTemplate x:Key="StartTimeCellTemplate"> <TextBlock Margin="4" Text="{Binding Begin}" /> </DataTemplate> <DataTemplate x:Key="StartTimeCellEditTemplate">  <input:TimeUpDown Format="hh:mm:ss" Value="{Binding Begin, Mode=TwoWay, ValidatesOnExceptions=True, NotifyOnValidationError=true}" /> </DataTemplate> … </ResourceDictionary> [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, XAML, Errors, Fix, ClipFlair, Controls, DLL, Reference, TimeUpDown, Toolkit
Set default document for IIS via web.config at Silverlight Web project 13 Ιουλίου 12 04:29 μμ | Μπιρμπίλης Γεώργιος | 0 σχόλια: When you tell the Visual Studio IDE to generate a web project (instead of just using an autogenerated page) for a Silverlight project, it creates a project named SilverlightAppName.Web with a SilverlightAppNameTestPage.aspx (ASP.net) and an SilverlightAppNameTestPage.html. Either one can be served from a web server (obviously the .aspx one from IIS or any web server [...]

Δημοσίευση στην κατηγορία: .NET, Posts, Silverlight, Web, Launch, HTTP, ClipFlair, IIS, Configuration

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