Wpf Styles

The thing that makes this work is the fact that you use a DynamicResource for the brush reference in your style - this tells WPF to monitor that resource for changes. So, why would you need another class to add visual effects when you can pretty much customize any WPF control using control templates and data templates?. Soon we will get also products for Silverlight. 0 For projects that support PackageReference , copy this XML node into the project file to reference the package. WPF Styles and Control Templates - Made in code This is an examination of many aspects of writing Styles and Control Templates in code. A style consists of a list of property setters. Hello, I have styles defined for various controls viz. MainWindow. It is not 100% comprehensive but it gets you far and has a few very useful tips & gotchas. In particular we will look at being able to have complete control over all the visual states, including disabled, mouse over, mouse down and even the appearance of the focus rectangle. 2 Service Release Notes - December 2018 Andrew Goldenbaum Dec 21, 2018 Release notes reflect the state of resolved bugs and new additions from the previous release. How Can I style it? Need to change the Month background and font This what I have so far thx --> As you can see, there is a trigger to change the Fill property to the Transparent color or to a VisualBrush. xaml will quickly become complex, so they can be placed in separate resource dictionaries. And because implicit styles are supported, as little as a couple of lines of XAML code are needed to apply beautiful, uniform styles to any WPF application, in less than two minutes. cs and Generic. Most of the time you need to set most common properties like margin, horizontal alignment, vertical alignment, padding, color, fonts etc. You can easily have similar scrollbar style for your WPF application to boost up your application's UI experience. I recently began working with WPF for the first time. I mainly use the primary, default, and danger styles to indicate the kind of actions that are being performed. Muhammad Rehan Saeed Software Developer at Microsoft, Open Source Contributor and Blogger. Creating the Style Object in WPF. Controls must be arranged somehow. Styling the TabControl The WPF TabControl is a composite control and there is no PART on its template. 例如:如果我在这两种情况下的任何一个中键入“ 5”,则结果文本均为“ $5. For instance, if you create a style that targets the TextBlock controls in a Canvas , the style is applied to all TextBlock controls in the canvas, even if the TextBlock is part of another control. changing the width of all buttons. WPF GridView Cell Borders If you populate a GridView programmatically it is not obvious how can set its style. Code I know, this is quite often used and not really innovative, however from point of view of a user, the most accepted version. To really appreciate how this lookless model works, I would encourage you to spend some time looking at the styles and templates for the native WPF controls. The "black title bar" issue I fixed by adding Background="White" to the Border style of the window template:. WPF DatePicker Control Style How to style a WPF Date Picker control? The WPF controls were hierarchical controls and most likely implements what other controls were implemented (inherited the styles and functions) as follow through how the User Interface reacts based on the events made by the end-user in your application. In WPF ListBox, during styling, the most important properties to modify are Style (of type Style), ItemContainerStyle (of type Style), and ItemTemplate (of type DataTemplate). WPF Style TabControl and TabItem: In your WPF Window. How Can I style it? Need to change the Month background and font This what I have so far thx --> As you can see, there is a trigger to change the Fill property to the Transparent color or to a VisualBrush. WPF Textbox Style - Changing Colors on Focus. MvcSiteMapProvider - Enhanced bootstrap dropdown menu. I recently needed to style a WPF expander control for a prototype project. Apple MacOS has beautiful rounded corner scrollbar and add to the UI experience you have while working on a MacOS machine. Xceed DataGrid for WPF Professional Edition v3. WPF GridView Cell Borders If you populate a GridView programmatically it is not obvious how can set its style. XAML Templates offers professional XAML Templates (Styles, Themes) for WPF UI controls that are available for immediate download. Just like the Silverlight version, we are providing you with styles for the primitive WPF controls that appear in the Visual Studio toolbox, as well as some controls in the WPF Toolkit. In 'L' is for Lookless, I introduce WPF's lookless control model and examine what it means to style and template a control in WPF. WPF Popup - animation - style dersleri izleyin. In this post I will be sharing WPF Design to produce WPF Buttons with Rounded corners and hover effects. We cover extending styles using the BasedOn property and creating base styles for specific. If you wish to apply this scrollbar style application wide then you should follow below steps. I have seen a lot of explanation and looked many articles on net about the slider, but i got the the better idea about it only when I implemented it in my own way. Introduction to Styles in WPF Introduction. WPF Inspector is a utility that attaches to a running WPF application to troubleshoot common problems with layouting, databinding or styling. MSDN topic Silverlight Resource Dictionaries. Next up is the WPF version of the Infragistics' Metro Theme. Edit the styles of datagrid elements in Visual Studio Designer. First, create your new project, and then focus and right click on the window control. I set the following for a button, label, and border control for an application I am creating. This article and the sample project attached shows techniques to create a custom WPF window style. While naturally suited for tabular data, it is flexible enough to present many different kinds of dynamic content. Learn how to style grid rows conditionally by using the RowStyleSelector and AlternateRowStyleSelector properties of RadGridView - Telerik's WPF DataGrid. now creating a Button and TextBox control in xaml to apply named Styles. Styles are used throughout the application to make the user interface more consistent (e. You can read more about that elsewhere in this tutorial. This version had. In WPF, a Style defines the values of one or more dependency properties for a given visual element. In this example, I use a red color: Tomato. Explicit style means you'll have to explicitly write the style for each button. In a Windows Forms application there are the MinimizeBox and MaximizeBox boolean properties that lets you disable the minimize and maximize button…. How to make WPF RadioButton Style? Software Development. 5 Framework with VS 2005. WPF - Application Level - Defining a style on app level can make it accessible throughout the entire application. Get the Default ScrollViewer Style. Professional WPF & Silverlight Templates, Styles, Themes, Skins available for immediate download. Introduction to WPF styles. MultiTrigger to the Style’s Triggers collection. In this article we will go though how to change the appearance of the datagrid control. If it is an image font, then use the unicode values for the images you want, for example  for the GitHub icon. A style is a collection of property values that can be applied to an element. Introduction to Styles in WPF Introduction. First thing, find the App. At some point of development I noticed that data inside my DataGrid was really hard to read because of each row had the same color, so I decided to apply a style that will alternate the color for the rows, just like we usually see in excel reports. I commonly use Bootstrap buttons, because they come with good default styles which can give hints to the users. WPF has an inbuilt feature of Spellchecking. TypedStyles assembly that contains typed styles for the following controls:. Edit the styles for every datagrid element, including the filter user interface pop-up. In this example, I use a red color: Tomato. First, create a WPF application. WPF rich styling allows you to very easily have “skins” for your app. ` Some things in life are certain: including death and taxes. Style customization is used to change the look and feel of any control. The accompanying project contains all the code for recreating various controls, and a few solutions to common problems. For this WPF gives us the ResourceDictionary, an XAML file where we include all our code for styles, and include it throughout the application. Welcome to my website about the Windows Presentation Foundation. This rule applies only to the Style dependency property. 0 For projects that support PackageReference , copy this XML node into the project file to reference the package. WPF rich styling allows you to very easily have “skins” for your app. In ‘L’ is for Lookless, I introduce WPF’s lookless control model and examine what it means to style and template a control in WPF. In the new release of VIBlend WPF Controls we will extend our collection of Free Themes for the standard WPF controls. Button Styles and Templates. ] Updated: November 2007 This sample shows the ControlTemplate examples for the most common WPF controls. WPF - Triggers - A trigger basically enables you to change property values or take actions based on the value of a property. Learn how to style grid rows conditionally by using the RowStyleSelector and AlternateRowStyleSelector properties of RadGridView - Telerik's WPF DataGrid. Telerik UI for WPF enhances the user experience by providing you with both the UI components and data virtualization mechanism for optimal performance. In this article I will discuss how you could write better styles for your application. I have several common styles and I want to share them in several pages of my Windows 8. Consider this: WPF does give default style to a button. This contains Application. 2 Service Release Notes - December 2018 Andrew Goldenbaum Dec 21, 2018 Release notes reflect the state of resolved bugs and new additions from the previous release. WPF, previously known as "Avalon", was initially released as part of. Named styles sheet is the same as inline. Metro Style Window in WPF. When your DataGrid contains many different controls, the height of a cell in DataGrid increases accordingly. Style customization is used to change the look and feel of any control. However, how do I make it a style and be able to change the Image Source using XAML only? WPF Button Style with Different Image Source. WPF Vertical Progress Bar Styles. DevExpress controls allow you to generate columns based on data and customize them using WPF styles without limitations. The form does not have a header section. Thanks a lot. Hi, I need to style my RadioButton within a WPF Application Window. These property values are applied using Setter objects. Many WPF controls consist of a combination of other WPF controls, so creating a style that applies to all controls of a type can have broad impact. Blend-style behaviors also have their own set of lifetime problems. Basically, every object in WPF, be that a button, Control styles in WPF - DZone. You can modify the default ControlTemplate to give the control a unique appearance. NET Framework 3. WPF wpf ListView ItemContainerStyle specifies a style that is used by every generated ListViewItem for styling it. Named styles. Getting started with wpf "Half the Whitespace" Design principle; An Introduction to WPF Styles; Button Style DoubleAnimation; Creating a Resource Dictionary; Style Applied to All Buttons; Styling a Button; Styling a ComboBox; Creating custom UserControls with data binding; Creating Splash Screen in WPF; Dependency Properties; Grid control. For example following style will change button's background property to red based on value of data context object's property. It is available under Microsoft's Open Specification Promise. Styles and Templates in WPF DataGrid (SfDataGrid) The appearance of SfDataGrid and its inner elements (example: Cell, Row, Header, Summary etc. When your DataGrid contains many different controls, the height of a cell in DataGrid increases accordingly. WPF has an inbuilt feature of Spellchecking. In Windows Presentation Foundation (WPF), the datagrid is a highly-adaptable control for displaying information in tables in your Windows desktop applications. It allows you to apply different styles to your button based on it's content. For Font Awesome, you can look up the values on the Cheat Sheet. This class is considered lightweight because it does not provide layout, input, focus. One of WPF's most powerful feature is the ability to completely replace the look and feel of user interface elements. wpf documentation: Styling a Button. Professional WPF & Silverlight Templates, Styles, Themes, Skins available for immediate download. WPF - Styles In styles, you can set only the existing properties of an object such as Height, Width, Font size, etc. Extensible Application Markup Language (XAML / ˈ z æ m əl / ) is a declarative XML-based language developed by Microsoft that is used for initializing structured values and objects. When you use System. In fact style is just a design matter and design should be done within the XAML part. You can see all the misspelled word is shown with red underline. An Aero-themed application that uses Actipro Themes for both native (e. Fully open source and one of the most popular GUI libraries for WPF, the library is also compatible with MahApps and Dragablz. In the previous article we examined data templates and triggers to see how the rendering of data objects can be described in XAML. xaml: StyleCode-. Please drag an Expander control to your WPF Window. The simplifications is tied to styles. They are both similar in most of the cases, while the former extends the feature allowing most of the features which WPF have. Hi, Today let us explore how to customize a slider control in WPF. wpf documentation: Styling a Button. xaml create a tag below and add following styles to it. What you get is exceptional speed and sleek end-user experience. net-mvc-5,mvcsitemapprovider,mvcsitemap. GitHub Gist: instantly share code, notes, and snippets. As described by MSDN, DrawingVisual is a lightweight drawing class that is used to render shapes, images, or text. com ( Learn more ) Optimized Mode Styles and Templates. WPF Style inheritance. Just like any other resource, we can create 'Style' in any scope as per our requirement, i. Many WPF controls consist of a combination of other WPF controls, so creating a style that applies to all controls of a type can have broad impact. A style is a collection of property values that can be applied to an element. As well as the 2 different texts and text styles?. It was developed on the. I have seen a lot of explanation and looked many articles on net about the slider, but i got the the better idea about it only when I implemented it in my own way. 0 in which i can track given docket number and give current status to user. Hello, I wand to develop a module in vb6. how to customize template of DataGridColumnHeader, DataGridRow, DataGridCell, DatagridRowHeader and ScrollViewer of the DataGrid. A first in any WPF datagrid, it lets the end-user go instantly to any group or sub-group with a single click in a combo box. Hi, I need to style my RadioButton within a WPF Application Window. When your DataGrid contains many different controls, the height of a cell in DataGrid increases accordingly. xaml: StyleCode-. With a GroupBox in WPF, we can place them within a box that has a header. You can read more about that elsewhere in this tutorial. As you can see, the dropdrop panel's alpha is reduced to half (transparency effect with gradient), and the "textbox" was merged with the "dropdown-button" to one style. Lists all styles provided by the DXGrid. What I was thinking is using something similar to: And in code Implement an IValueConverter which does something similar to the code below in the ConvertTo method:. WPF DataGrid ColumnHeaderStyle (LinearGradientBrush) This post is part of series called WPF Styles where you can find many different styles for your WPF application. textboxes,combobox,datepickers,etc. If you try to use an ElementName binding on a tooltip element, the Output window will display this type of debugging info:. In WPF, a Style defines the values of one or more dependency properties for a given visual element. net or Bind and Export GridView data to PDF file in asp. WPFpedia is a free reference guide that specifically targets WPF developers. Using styles, you can group a set of properties and assign them to specific controls or all controls of a specific type, and just like in CSS, a style can inherit from another style. WPF knows three diferent types of triggers. You can create a Style inline or in the Resources section and set the ItemContainerStyle property of ListView. WPF - Triggers - A trigger basically enables you to change property values or take actions based on the value of a property. WPF styles make it easy to get a consistent look, and with triggers, this look becomes dynamic. ) can be customized using various properties exposed and by editing the elements' Style. The accompanying project contains all the code for recreating various controls, and a few solutions to common problems. Right now i have a WPF application supposed to display some media into a WPF Window, from actions in another WPF Window ( for example : you write text in a textbox, you click on a button, and the t. WPF style is similar to CSS (Cascading Style Sheets) in. With minimal effort any of the supplied Windows Presentation Foundation (WPF) controls can be visually restyled to suit an application's needs. In WPF, styles have similar behavior as CSS for HTML pages – they have no control implementation or declaration, they don’t define behavior, but they set. With a GroupBox in WPF, we can place them within a box that has a header. Controls must be arranged somehow. In particular we will look at being able to have complete control over all the visual states, including disabled, mouse over, mouse down and even the appearance of the focus rectangle. I hope you will get amazed by the possibilities of this fascinating technology. A style consists of a list of property setters. It is, sometimes, a requirement that data with different values appear differently on the view so that user focus could be triggered on important information in the list. WPF Controls > Controls and Libraries > Data Grid > Examples > Optimized Mode Styles and Templates View this topic on docs. Ready to use styles. Button Styles and Templates. dotnet add package Wpf. Lists DevExpress themes that can be applied to all DevExpress controls for WPF and some standard controls. First it will try to apply the style specified by the developer. A style can be useful at that time. Wpf Button Style Trigger Wpf Button Style Trigger Sale >>> Check price & More details !! Shop for Wpf Button Style Trigger Ads Immediately. Metro Style Window in WPF. Summary This project is solely made for the purpose of sharing WPF Styles so that one doesn't have to fight hard for setting up styles like I had to. Copy the element style templates to XAML view without writing a single line of code. The TimePicker class derives from the Control class and has a static constructor. Styles and Templates Introduction Styles Style is a way to group similar properties in a single Style object and apply to multiple objects. How to style a WPF Calendar control? Same as what we had discussed when designing the WPF Date Picker control. This is best done with a WPF Resource like this:. In the Toolbox, select Border and drag it to your window in the designer. The three free controls that are included are the WPF Coverflow control, WPF Autocomplete Textbox and the handy Prompt Decorator control! On top of the free WPF controls, you're welcome to our free WPF themes - 5 of them! The themes apply styles for all the builtin WPF controls as well as all the Mindscape WPF controls. NET consulting firm. Introduction to Styles in WPF Introduction. Learn more. If you're brand new to WPF, then we recommend that you start from the first chapter and then read your way through all of it. Windows Presentation Foundation (WPF) is provides Style objects and template objects as a way to define the visual appearance of an element in resources, so that they can be used multiple times. Grid Elements That Support Templates. Muhammad Rehan Saeed Software Developer at Microsoft, Open Source Contributor and Blogger. In this article we will learn how to use Named Styles in WPF using VB. cs and Generic. With the current style code that i have, it's working fine when IsEditable is True, as I just do SelectAll to Combobox Text, which gives a user experience of Combobox selected. You can easily have similar scrollbar style for your WPF application to boost up your application's UI experience. Would somebody know how to recreate this button style in WPF? As I do not know how to make the different compartments. WPF gives us a Style infrastructure to do just this. Both dates were stored in properties on the DataContext of the page, so theoretically I could have gotten to either of them via a binding. Muhammad Rehan Saeed Software Developer at Microsoft, Open Source Contributor and Blogger. When you add a new Window to a WPF application it builds a. Extensible Application Markup Language (XAML / ˈ z æ m əl / ) is a declarative XML-based language developed by Microsoft that is used for initializing structured values and objects. As you can see, the dropdrop panel's alpha is reduced to half (transparency effect with gradient), and the "textbox" was merged with the "dropdown-button" to one style. Expression Blend is an interactive developer tool. A template is the look and visual appearance of a control or entire application. Marked as answer by Yang,Chenfei Wednesday, June 18, 2014 7:38 AM. I decided to download a trial copy of Microsoft Expression Blend 2 to check out the designer side of WPF. WPF - Triggers - A trigger basically enables you to change property values or take actions based on the value of a property. WPF Inspector is a utility that attaches to a running WPF application to troubleshoot common problems with layouting, databinding or styling. Controls must be arranged somehow. Editing styles using Visual Studio Designer. Add Style in Resources. Learn more. com ( Learn more ) Grid Control Styles. WPF Styles project shows how to create styles for Combobox, Tabltem and Button. Binding for WPF Styles. dotnet add package Wpf. In this example, the style only affects this specific TextBlock Local child control style. A style consists of a list of property setters. Templates and Styles. A template is the look and visual appearance of a control or entire application. A DataTrigger can be attached to any property, be it on it's own control, another control, or even a property in a non UI class. With Material Design In XAML Toolkit you can easily bring beautiful desktop applications to life, using a modern and popular design language. Adding a number of Visual C# project and item templates to Visual Studio 2012 and 2013 for creating WPF applications with a Modern UI look & feel. The ContentTemplate allows you to define UI that can be shared across many instances of a ContentControl. First thing, find the App. Styles and templates for all native WPF controls with a more modernized appearance are included, and mesh perfectly with Actipro's custom control products. xaml file within the WPF or Silverlight Project. In the previous article we looked at WPF resources, which allow you to define objects to be shared by a control and its children, an entire window or a whole application, depending upon the resource scope. In the previous article we examined data templates and triggers to see how the rendering of data objects can be described in XAML. Using the WPF Textbox styles options, we can change the border color, foreground color, background color, border color and also produce a rounded border radius for WPF Textbox control. You can read more about that elsewhere in this tutorial. Right now i have a WPF application supposed to display some media into a WPF Window, from actions in another WPF Window ( for example : you write text in a textbox, you click on a button, and the t. For example following style will change button's background property to red based on value of data context object's property. This is useful if we want the application to have a consistent look and feel. xaml create a tag below and add following styles to it. Windows Presentation foundation offers great functionality to change the look and feel of the application UI. Setting a Theme with StyleManager. Copy the element style templates to XAML view without writing a single line of code. This excerpt from the generated layout code for the WinForms applications shows where each radio button related to font family specifies its separate event handler. The complete WPF tutorial. Property settings The following table maps the desired configuration to the property settings that manage it. Hence this control is a separate object/control, considered as a separate FrameworkElement, then you can do your own style and design for. Introduction to Styles in WPF Introduction. Within the App. *I* think it's interesting, Colin. The three free controls that are included are the WPF Coverflow control, WPF Autocomplete Textbox and the handy Prompt Decorator control! On top of the free WPF controls, you're welcome to our free WPF themes - 5 of them! The themes apply styles for all the builtin WPF controls as well as all the Mindscape WPF controls. DevExpress controls allow you to generate columns based on data and customize them using WPF styles without limitations. Re: Menu Item color change in wpf I am using C# 2008 express edition and when i change the background to white to all menu items still it is showing blue whem mouse hover. Note that your GroupBox element is now using your modified copy of the style. Let's have a look at the XAML code in Listing 1 that generates Figure 1. Let's rename CustomControl1 to TimePicker. GitHub Gist: instantly share code, notes, and snippets. Please note the CSS and the WPF are two different technologies. xaml create a tag below and add following styles to it. In the previous article we looked at WPF resources, which allow you to define objects to be shared by a control and its children, an entire window or a whole application, depending upon the resource scope. Telerik UI for WPF - Outlook Style - InboxThe Outlook style sample app uses GridView to provide an email client with a familiar look and feel. Includes matching brushes to style non-standard controls. In this post I will demonstrate how to create a custom template for a WPF button using XAML. 6 features an innovative new group navigation control in the Tableflow™ view that greatly increases the datagrid’s usability. on many elements of your application. This is basically single inheritance for styles. Menu, ToolBar, TextBox) and Actipro controls. WPF styles make it easy to get a consistent look, and with triggers, this look becomes dynamic. Procedure goes like this: create base style and give it a name; create new style and add property: BasedOn="{StaticResource SomeBaseStyle}" Now, I’m going to create base style for FrameworkElement and then I’ll derive styles for each type of control I. What you get is exceptional speed and sleek end-user experience. Creating a WPF Style in Code The other day I was designing a page in WPF, and wanted to show or hide a TextBlock depending on whether one date was after another. Otherwise, click the button below to install the prerequisites and run the application. This rule applies only to the Style dependency property. In WPF, the visual tree implementation of the controls were actually to reuse the existing implemented controls (and that is what happened in ScrollBar control). WPF: How to change the style of selected and Focused Row with AlternateRowColor of DevExpress Grid Control To change the style of the selected row we will write a Trigger and will apply style for the row in the trigger. This is the fifth article in an introductory series about the Windows Presentation Foundation. Startup event is a good. I had never worked with WPF before this venture. Metro Style for WPF Button. This can be achieved by changing the ItemTemplate of the ComboBox. If you have any doubt please leave a comment. To use the base class you will need to make one simple change in both the XAML and in your code-behind class. We cannot say we could use the same code in both. 6m developers to have your questions answered on WPF styles of UI for WPF General Discussions. In the previous article we looked at WPF resources, which allow you to define objects to be shared by a control and its children, an entire window or a whole application, depending upon the resource scope. The #1 WPF Book--Now Updated for WPF 4. This is useful if we want the application to have a consistent look and feel. The accompanying project contains all the code for recreating various controls, and a few solutions to common problems. Conditional Formatting. You must know how the WPF Control implement the hierarchical order of the child controls on its own template. xaml: StyleCode-. Professional WPF & Silverlight Templates, Styles, Themes, Skins available for immediate download. In ‘L’ is for Lookless, I introduce WPF’s lookless control model and examine what it means to style and template a control in WPF. Metro Style for WPF Button. Create Animation Without Code With WPF & Expressions Blend 4 - Duration: 5:56. Item Templates (Visual C# Items\Modern UI for WPF) Basic Page. WPF styles are like css in that they can be used to globally define the looks of certain elements, they can be paired to specific element by way of a key, or they can even be declared inline directly on an element. Creating the Style Object in WPF. Grid Elements That Support Templates. When data is bound to a WPF List Box, the List Items gets generated automatically and it becomes a bit clumsy to apply any style on the individual items in the ListBox. Adding a number of Visual C# project and item templates to Visual Studio 2012 and 2013 for creating WPF applications with a Modern UI look & feel. *I* think it's interesting, Colin. WPF style is similar to CSS (Cascading Style Sheets) in. Controls such as the DevExpress WPF Grid provide the same level of MVVM support as the standard Microsoft Data Grid along with additional features not available from Microsoft. ] Updated: November 2007 This sample shows the ControlTemplate examples for the most common WPF controls. giving all dialog buttons a consistent size) and to make bulk changes easier (e. Specifies the style applied to group summary items aligned by columns. I have seen a lot of explanation and looked many articles on net about the slider, but i got the the better idea about it only when I implemented it in my own way. The concept of styles let you remove all properties values from the individual user interface elements and combine them into a style. When you use System. The Label is for a shorter, "labeling" piece of text. ) can be customized using various properties exposed and by editing the elements’ Style. CloudFront. WPF wpf ListView ItemContainerStyle specifies a style that is used by every generated ListViewItem for styling it. Using the WPF Textbox styles options, we can change the border color, foreground color, background color, border color and also produce a rounded border radius for WPF Textbox control. A WindowStyle that specifies a window's border style. When data is bound to a WPF List Box, the List Items gets generated automatically and it becomes a bit clumsy to apply any style on the individual items in the ListBox. MvcSiteMapProvider - Enhanced bootstrap dropdown menu. I also talk about the importance of keeping the default Windows theme files on hand as a general reference for control styling and templating. In this blog I am trying to explain the concept of Inline Styles and Templates using wpf. WPF DataGrid use ListCollectionView to group list of items and GroupStyle.