To populate the ComboBox, we can simply use Enum.GetValues () to get an array of values of the constants in specified Enum. However, EnumItemList already supports an easier way to read localized enum texts from assembly resource files as described next. How can the electric and magnetic fields be non-zero in the absence of sources? Find centralized, trusted content and collaborate around the technologies you use most. Henrik Jonsson is a Microsoft Professional Certified Windows Developer (MCPD) that currently works as an IT consultant in Vsters, Sweden. Hey, thank you for posting this tutorial. In addition, when the enum item is to be reused, the UIElement has to be cloned which is not as quick as using a DataTemplate. I deleted all mine and just had 'Any CPU' and Blend didn't like it. Since the combobox items are not the enumeration values directly, it is important to set the SelectedValuePath to Value and bind the underlying property to the SelectedValue (instead of SelectedItem). Check out this post that describes the fix, http://dotnetgui.blogspot.com/2012/02/expression-blend-bugcant-open.html. to get to a nested type in XAML: You could declare it outside of your class: The x:Static markup has the fixed syntax: {x:Static Anyway, the part that ensures the test class receives the actual enum value, and not the friendly name, which it would not know what to do with, is a simple case of more databinding in the XAML. Since I wrote this article, the legendary Andrew Smith (Infragistics.(Josh Smith even calls him a guru)), sent me an email with an alternative approach where he creates a MarkupExtension that does that same as this, so you might like to check out that at Andrews blog. Then we can assign this Array to ItemSource of ComboBox since it is of type IEnumerable in code behind. The disadvantages are that it is verbose and it is not possible to customize or localize the texts. In the same way as described in Sacha Barbers article, EnumItemList also looks for DescriptionAttribute on the enum values and uses their descriptions as enum text instead of the enum entry code name if found: The enumeration value text specified in XAML will take precedence over the text from the DescriptionAttribute. This forum has migrated to Microsoft Q&A. Find centralized, trusted content and collaborate around the technologies you use most. HI, I see that you didn't implement ConvertBack method. To support such scenarios, EnumItemList is able to act as a value converter on bindings. @sheepsteakOLD2 This worked for me. Let us start with the simplest use case which is to just show all the enum values as named by the programmer without any customization: The EnumItemList class represents a collection of enumeration value-name pairs that are populated by specifying the EnumType attribute. Connect and share knowledge within a single location that is structured and easy to search. To support displaying non-textual content without having to specify an ItemTemplate, the EnumItem has a custom type converter that is able to provide a UIElement to be shown in a ContentPresenter context, which includes ComboBoxItems with default control templates. Is this meat that I was told was brisket in Barcelona the same as U.S. brisket? A planet you can take off from, but never land back. Worked for me! I've just created a new WPF project in the blend, pushed it on git, added mqsql drivers, rest service and nfc sdk and suddenly blend tells me that Application In the EnumItemList code there is a variable named m_enumType - when I created the class in my code it cannot be found by VS2010. To set the available values the MVVM way you typically have to databind the ItemsSource-Property to a collection. Could you try to build this solution in the Blend successfully? The other enumeration values will be shown using their code names as before. How to get the enum property from selected value which is localized? how to verify the setting of linux ntp client? Presents a helper class to easily display user-friendly enum value representations including customizable and localizable text, images, and arbitrary XAML content. So putting it all together, we now have a bound ComboBox which shows friendly values to the user, but maintains the correct enum values within the bound object, for the selected item. Sometimes it is useful to visualize enumeration values outside a list control context. I have ensured that I added all the relevant namespaces, checked and double checked. Click the Next button. I closed and restarted VS and no longer got the error. With EnumItemList, sorting by localized text is the default behavior, which can be customized as described in the next section. It seems you do not add the XML namespace for this XAMl file, please ensure below two namespce in the XAMl file: and for Blend 4, you may need below namespaces extra: For more about XML namespace in XAMl, please refer to this document:
Is it possible to do this using attributes (not DescriptionAttribute though), but on the enum level? A static member of a namespace? The value-name pairs are represented by the EnumItem class which holds the enumeration value in the Value property. The EnumItem 's content property DisplayValue can be set to an arbitrary object and be bound to an arbitrary dependency property in a customized DataTemplate. In this example, we also add a new named list option for the null value to support a nullable backing property. To activate this, you then simply have to set the ResourceType property to the resource type: Any resource found will replace the current DisplayValue for the EnumItem and thanks to a custom type converter for the EnumItem class, non-textual resource enum representations will be displayed correctly without the need for data templates. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. tooltip shows up. I will wait for your response on Monday, do not be too anxious. Visit Microsoft Q&A to post new questions. A limitation of the attribute based technique to customize enum value visualization is that it cannot be customized by you if the enum type is declared in the .NET Framework or a third-party library. This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL), I am lucky enough to have won a few awards for Zany Crazy code articles over the years, I currently hold the following qualifications (amongst others, I also studied Music Technology and Electronics, for my sins), {Binding Source={StaticResource foodData}}", ------------------------------------------------------------------, {Binding Path=.,Mode=OneWay, When the EnumList is specified as a converter for a binding, it will convert enumeration values to the corresponding EnumItem instance, and thus all its properties can be used in the data template. (Element Name) is not supported in a windows presentation foundation (WPF) project. Every enumeration type has an underlying type, which can be any integral type except char. Cache type converter to increase performance. WPF Design error ( VerticalScrollBarVisibility) and ( HorizontalScrollBarVisibilty ) does not exist in the icsharpcode.net/sharpdevelop/avalonedit. Really complete and covers almost all usage scenarios! This should be obvious from the attached demo code. Lilypond: merging notes from two voices to one beam OR faking note length. 503), Mobile app infrastructure being decommissioned, 2022 Moderator Election Q&A Question Collection, BindingExpression path error: 'SystemParameters', Can't create xmlns reference to other project in XAML, Could not load type 'System.Windows.Controls.Primitives.MultiSelector' from assembly PresentationFramework, combo box inside a user control disappears when style is applied in wpf. The value of the Value property is checked at both design and run-time, so in case the enumeration value is not recognized, the Visual Studio WPF designer will report an error. It can even be useful as a general XAML switch statement with non-enum types as well. This will replace the old display text for this particular enumeration value. However, this does not affect the ability to build and the functionality during run-time. x:Static is a markup extension. Meanwhile, there is a fit for it:
The result is shown below: To allow using EnumItemList instances as ItemSources directly and to add items using XAML, EnumItemList has to implement IList. What sorts of powers would a superhero and supervillain need to (inadvertently) be knocking down skyscrapers? You may hence only add another XAML namespace that maps the System CLR namespace like this: How to enumerate an enum with String type? {x:Static model:enArtikelId.plenumStandaard}", {x:Static model:enArtikelId.plenumSupersize}", {x:Static model:enArtikelId.plenumPerpendicular}", {x:Static model:enArtikelId.plenumVaillant}", {Binding valvetypeID, Converter={StaticResource ArticleNames1}}", {Binding Severity, Converter={StaticResource MessageIcon}}", {Binding ContentSeverity, Converter={StaticResource MessageIcon}}", Last Visit: 31-Dec-99 19:00 Last Update: 7-Nov-22 6:31, WPF Globalization and Localization Overview, Found a slight improvement to the EnumItemList.Convert function, Re: Found a slight improvement to the EnumItemList.Convert function, I recently tried using EnumTools to convert an enum to colors. Thanks to a custom type converter for EnumItem, any DataTemplate is applied automatically using the default content template containing ContentPresenter. "Unload project".
The same approach can of course be used for any other ItemsControl, including ListBox. I am learning how to create a Class Library (Windows Store apps) and used a UserControl template to add a user control to it. CODE BEHIND. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The only significant thing I think of what I did between openings was create an Any CPU platform then delete the x86 and x64 build platforms. Do FTDI serial port chips use a soft UART, or a hardware UART? The solution was a custom TypeConverter which provides a suitable UIElement when shown in a ContentPresenter context. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Every enumeration type has an underlying type, which can be any integral type except char." So when we use enum s, we can actually do things like C# enum Hardware {DiskDrive= 1, Keyboard, GraphicsCard, Monitor}; To be able to use it in several locations, the UIElement is cloned as necessary using XamlWriter. Luckily one of those readers was the ultra talented Uwe Keim, who gave me some code for handling the localization of enums. The basic idea here is that this LocalizableDescriptionAttribute allows you to pass in a key and a resource type to look at, so the key value will index into the resource file and get the value of the resource file. To customize sorting, you can set the SortBy property in XAML, to sort by the Text, DisplayValue, or Value property. System.Xaml will also be required, to build the project. What does the capacitance labels 1NF5 and 1UF2 mean on my SMD capacitor kit? Am I missing something? Of NTP server when devices have accurate time what does the capacitance labels 1NF5 1UF2! 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