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• Wpf combobox selection change breaks Datatrigger

  - by biju

  Hi, I am trying to set the selected value of a combobox from a style trigger.It works as long as we dont manually change any value in the combobox.But it stops working altogether after manually changing the selection.How can i solve this.A sample code is attached.Please do help <Window x:Class="InputGesture.Window2" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:InputGesture" Title="Window2" Height="300" Width="300" Name="Sample"> <Window.Resources> <Style TargetType="{x:Type ComboBox}"> <Setter Property="ComboBox.SelectedValue" Value="1"/> <Style.Triggers> <DataTrigger Binding="{Binding ElementName=chk,Path=IsChecked}" Value="True"> <Setter Property="ComboBox.IsEnabled" Value="False"/> <Setter Property="ComboBox.SelectedValue" Value="2"/> </DataTrigger> </Style.Triggers> </Style> </Window.Resources> <StackPanel> <CheckBox Name="chk" Height="23"/> <ComboBox Name="cmb" Height="23" DisplayMemberPath="Name" SelectedValuePath="Id" ItemsSource="{Binding ElementName=Sample,Path=DT}"> </ComboBox> <Button Height="23" Click="Button_Click"/> </StackPanel> </Window>

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• WPF TreeView: How to style selected items with rounded corners like in Explorer

  - by Helge Klein

  The selected item in a WPF TreeView has a dark blue background with "sharp" corners. That looks a bit dated today: I would like to change the background to look like in Explorer of Windows 7 (with/without focus): What I tried so far does not remove the original dark blue background but paints a rounded border on top of it so that you see the dark blue color at the edges and at the left side - ugly. Interestingly, when my version does not have the focus, it looks pretty OK: I would like to refrain from redefining the control template as shown here or here. I want to set the minimum required properties to make the selected item look like in Explorer. Alternative: I would also be happy to have the focused selected item look like mine does now when it does not have the focus. When losing the focus, the color should change from blue to grey. Here is my code: <TreeView x:Name="TreeView" ItemsSource="{Binding TopLevelNodes}" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling"> <TreeView.ItemContainerStyle> <Style TargetType="{x:Type TreeViewItem}"> <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" /> <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" /> <Style.Triggers> <Trigger Property="IsSelected" Value="True"> <Setter Property="BorderBrush" Value="#FF7DA2CE" /> <Setter Property="Background" Value="#FFCCE2FC" /> </Trigger> </Style.Triggers> </Style> </TreeView.ItemContainerStyle> <TreeView.Resources> <HierarchicalDataTemplate DataType="{x:Type viewmodels:ObjectBaseViewModel}" ItemsSource="{Binding Children}"> <Border Name="ItemBorder" CornerRadius="2" Background="{Binding Background, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" BorderBrush="{Binding BorderBrush, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" BorderThickness="1"> <StackPanel Orientation="Horizontal" Margin="2"> <Image Name="icon" Source="/ExplorerTreeView/Images/folder.png"/> <TextBlock Text="{Binding Name}"/> </StackPanel> </Border> </HierarchicalDataTemplate> </TreeView.Resources> </TreeView>

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• Issue with binding Collection type of dependency property in style

  - by user344101

  Hi, I have a customcontrol exposing a Dependency property of type ObservableCollection. When i bind this properrty directly as part ofthe control's mark up in hte containing control everythihng works fine /< temp:EnhancedTextBox CollectionProperty="{Binding Path=MyCollection, Mode=TwoWay}"/ But when i try to do the binding in the style created for the control it fails, /< Style x:Key="abc2" TargetType="{x:Type temp:EnhancedTextBox}" <Setter Property="CollectionProperty" Value="{Binding Path=MyCollection, Mode=TwoWay}"/> Please help !!!!! Thanks

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• WPF custom BalloonTips problem with multithreading

  - by Erika

  Hi, I have read other related question but i cant really get them to relate to this so I thought it were best to ask, Im pretty new to WPF and so on so please bear with me. I am using this http://www.codeproject.com/KB/WPF/wpf_notifyicon.aspx api to work with custom WPF Windows (in particular FancyBalloon). However, i'm coming across the following problem, I seem unable to start off BalloonTips in a separate thread ( i need this because i'm parsing emails and hence if there are 3 emails for instance, it displays the first email (that works fine), but when it comes to the second email it crashes with a TargetInvocationException , {"Specified element is already the logical child of another element. Disconnect it first."}. Thing is, im supposedly working with the same instance and i have attempted calling it to close it before, disposing it etc but to no avail. (then again if i dispose it, i cant create another instance as apparently WPF UI components must be called from a static thread so throughout the looping of emails + displaying balloon, i am trying to use the same BalloonTip. Any suggestions please? I am really at a loss here and i've been on it for quite a while now :/ I was wondering if there was anyone

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• Wpf vs WinForms for a vb programmer? [closed]

  - by Jeroen

  I am asked by a client to develop an application that is basically a screen on which the user can choose several items to pass the time (used in holding cells in mental hospitals for example). The baisc idea is as follows: TV (choosing this will provide the user with a number of TV streams from the interweb) Radio (...) Games (serveral flash games, also from the interweb) Music (play local music or streams) Draw something (not the game) Create an email Choose lighting settings for the room etc. etc. I am torn between WinForms and WPF for this project. It seems that WPF is the way to go since there is quite a bit of rich media involved but I have a 15 year VB background. The project obviously has a dead line and certain budget that I cannot cross and if I can avoid starting from scratch with some thing that will be nice. Is WPF worth it in this particular case or can I use WinForms with the incorperation of WPF controls? I would very much like to hear your thoughts/comments/suggestions!

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• A WPF Image Button

  - by psheriff

  Instead of a normal button with words, sometimes you want a button that is just graphical. Yes, you can put an Image control in the Content of a normal Button control, but you still have the button outline, and trying to change the style can be rather difficult. Instead I like creating a user control that simulates a button, but just accepts an image. Figure 1 shows an example of three of these custom user controls to represent minimize, maximize and close buttons for a borderless window. Notice the highlighted image button has a gray rectangle around it. You will learn how to highlight using the VisualStateManager in this blog post.Figure 1: Creating a custom user control for things like image buttons gives you complete control over the look and feel.I would suggest you read my previous blog post on creating a custom Button user control as that is a good primer for what I am going to expand upon in this blog post. You can find this blog post at http://weblogs.asp.net/psheriff/archive/2012/08/10/create-your-own-wpf-button-user-controls.aspx.The User ControlThe XAML for this image button user control contains just a few controls, plus a Visual State Manager. The basic outline of the user control is shown below:<Border Grid.Row="0"        Name="borMain"        Style="{StaticResource pdsaButtonImageBorderStyle}"        MouseEnter="borMain_MouseEnter"        MouseLeave="borMain_MouseLeave"        MouseLeftButtonDown="borMain_MouseLeftButtonDown">  <VisualStateManager.VisualStateGroups>  ... MORE XAML HERE ...  </VisualStateManager.VisualStateGroups>  <Image Style="{StaticResource pdsaButtonImageImageStyle}"         Visibility="{Binding Path=Visibility}"         Source="{Binding Path=ImageUri}"         ToolTip="{Binding Path=ToolTip}" /></Border>There is a Border control named borMain and a single Image control in this user control. That is all that is needed to display the buttons shown in Figure 1. The definition for this user control is in a DLL named PDSA.WPF. The Style definitions for both the Border and the Image controls are contained in a resource dictionary names PDSAButtonStyles.xaml. Using a resource dictionary allows you to create a few different resource dictionaries, each with a different theme for the buttons.The Visual State ManagerTo display the highlight around the button as your mouse moves over the control, you will need to add a Visual State Manager group. Two different states are needed; MouseEnter and MouseLeave. In the MouseEnter you create a ColorAnimation to modify the BorderBrush color of the Border control. You specify the color to animate as “DarkGray”. You set the duration to less than a second. The TargetName of this storyboard is the name of the Border control “borMain” and since we are specifying a single color, you need to set the TargetProperty to “BorderBrush.Color”. You do not need any storyboard for the MouseLeave state. Leaving this VisualState empty tells the Visual State Manager to put everything back the way it was before the MouseEnter event.<VisualStateManager.VisualStateGroups>  <VisualStateGroup Name="MouseStates">    <VisualState Name="MouseEnter">      <Storyboard>        <ColorAnimation             To="DarkGray"            Duration="0:0:00.1"            Storyboard.TargetName="borMain"            Storyboard.TargetProperty="BorderBrush.Color" />      </Storyboard>    </VisualState>    <VisualState Name="MouseLeave" />  </VisualStateGroup></VisualStateManager.VisualStateGroups>Writing the Mouse EventsTo trigger the Visual State Manager to run its storyboard in response to the specified event, you need to respond to the MouseEnter event on the Border control. In the code behind for this event call the GoToElementState() method of the VisualStateManager class exposed by the user control. To this method you will pass in the target element (“borMain”) and the state (“MouseEnter”). The VisualStateManager will then run the storyboard contained within the defined state in the XAML.private void borMain_MouseEnter(object sender,  MouseEventArgs e){  VisualStateManager.GoToElementState(borMain,    "MouseEnter", true);}You also need to respond to the MouseLeave event. In this event you call the VisualStateManager as well, but specify “MouseLeave” as the state to go to.private void borMain_MouseLeave(object sender, MouseEventArgs e){  VisualStateManager.GoToElementState(borMain,     "MouseLeave", true);}The Resource DictionaryBelow is the definition of the PDSAButtonStyles.xaml resource dictionary file contained in the PDSA.WPF DLL. This dictionary can be used as the default look and feel for any image button control you add to a window. <ResourceDictionary  ... >  <!-- ************************* -->  <!-- ** Image Button Styles ** -->  <!-- ************************* -->  <!-- Image/Text Button Border -->  <Style TargetType="Border"         x:Key="pdsaButtonImageBorderStyle">    <Setter Property="Margin"            Value="4" />    <Setter Property="Padding"            Value="2" />    <Setter Property="BorderBrush"            Value="Transparent" />    <Setter Property="BorderThickness"            Value="1" />    <Setter Property="VerticalAlignment"            Value="Top" />    <Setter Property="HorizontalAlignment"            Value="Left" />    <Setter Property="Background"            Value="Transparent" />  </Style>  <!-- Image Button -->  <Style TargetType="Image"         x:Key="pdsaButtonImageImageStyle">    <Setter Property="Width"            Value="40" />    <Setter Property="Margin"            Value="6" />    <Setter Property="VerticalAlignment"            Value="Top" />    <Setter Property="HorizontalAlignment"            Value="Left" />  </Style></ResourceDictionary>Using the Button ControlOnce you make a reference to the PDSA.WPF DLL from your WPF application you will see the “PDSAucButtonImage” control appear in your Toolbox. Drag and drop the button onto a Window or User Control in your application. I have not referenced the PDSAButtonStyles.xaml file within the control itself so you do need to add a reference to this resource dictionary somewhere in your application such as in the App.xaml.<Application.Resources>  <ResourceDictionary>    <ResourceDictionary.MergedDictionaries>      <ResourceDictionary         Source="/PDSA.WPF;component/PDSAButtonStyles.xaml" />    </ResourceDictionary.MergedDictionaries>  </ResourceDictionary></Application.Resources>This will give your buttons a default look and feel unless you override that dictionary on a specific Window or User Control or on an individual button. After you have given a global style to your application and you drag your image button onto a window, the following will appear in your XAML window.<my:PDSAucButtonImage ... />There will be some other attributes set on the above XAML, but you simply need to set the x:Name, the ToolTip and ImageUri properties. You will also want to respond to the Click event procedure in order to associate an action with clicking on this button. In the sample code you download for this blog post you will find the declaration of the Minimize button to be the following:<my:PDSAucButtonImage       x:Name="btnMinimize"       Click="btnMinimize_Click"       ToolTip="Minimize Application"       ImageUri="/PDSA.WPF;component/Images/Minus.png" />The ImageUri property is a dependency property in the PDSAucButtonImage user control. The x:Name and the ToolTip we get for free. You have to create the Click event procedure yourself. This is also created in the PDSAucButtonImage user control as follows:private void borMain_MouseLeftButtonDown(object sender,  MouseButtonEventArgs e){  RaiseClick(e);}public delegate void ClickEventHandler(object sender,  RoutedEventArgs e);public event ClickEventHandler Click;protected void RaiseClick(RoutedEventArgs e){  if (null != Click)    Click(this, e);}Since a Border control does not have a Click event you will create one by using the MouseLeftButtonDown on the border to fire an event you create called “Click”.SummaryCreating your own image button control can be done in a variety of ways. In this blog post I showed you how to create a custom user control and simulate a button using a Border and Image control. With just a little bit of code to respond to the MouseLeftButtonDown event on the border you can raise your own Click event. Dependency properties, such as ImageUri, allow you to set attributes on your custom user control. Feel free to expand on this button by adding additional dependency properties, change the resource dictionary, and even the animation to make this button look and act like you want.NOTE: You can download the sample code for this article by visiting my website at http://www.pdsa.com/downloads. Select “Tips & Tricks”, then select “A WPF Image  Button” from the drop down list.

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• .NET WPF Charting Control

  - by Randy Minder

  We're very close to wrapping up a WPF dashboarding application using SSRS (.RDLC files) and the Microsoft Report Viewer. For a number of reasons, this combination has turned out to be less than what we had hoped. One of the biggest problems is that the Microsoft Report Viewer is not a WPF control. We've had other problems as well. Our app consists of at least 5 tabs and each tab has at least 4-5 charts on it. All the charts update on their own timed schedules (like every 15-30 minutes). For the next version I'd like to explore other .NET charting tools for WPF. Performance is absolutely critical. As is resource usage. The tool must support WPF and as many chart types as possible. Can anyone recommend (or not recommend) charting tools they have experience with? We own Telerik and I've dabbled with their charting control. At the 30K foot level, it seems quite nice.

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• WPF Xaml Custom Styling Selected Item Style in a ListBox

  - by John Batdorf

  I have a list box that scrolls images horizontally. I have the following XAML I used blend to create it. It originally had a x:Key on the Style TaregetType line, MSDN said to remove it, as I was getting errors on that. Now I'm getting this error: Error 3 Operation is not valid while ItemsSource is in use. Access and modify elements with ItemsControl.ItemsSource instead. I don't understand how to apply all of this junk that way, I've tried several thing, nothing is working. My goal is to have the selected item's background be white, not blue. Seems like a lot of work for something so small! Thanks. <ListBox ItemsSource="{Binding Source={StaticResource WPFApparelCollection}}" Grid.Row="1" Margin="2,26,2,104" ScrollViewer.VerticalScrollBarVisibility="Hidden" ScrollViewer.HorizontalScrollBarVisibility="Hidden" SelectionMode="Single" x:Name="list1" MouseLeave="List1_MouseLeave" MouseMove="List1_MouseMove" Style="{DynamicResource ListBoxStyle1}" > <Style TargetType="{x:Type ListBoxItem}"> <Setter Property="Background" Value="Transparent"/> <Setter Property="HorizontalContentAlignment" Value="{Binding Path=HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/> <Setter Property="VerticalContentAlignment" Value="{Binding Path=VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/> <Setter Property="Padding" Value="2,0,0,0"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ListBoxItem}"> <Border x:Name="Bd" SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}"> <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </Border> <ControlTemplate.Triggers> <Trigger Property="IsSelected" Value="true"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/> <Setter Property="Background" TargetName="Bd" Value="#FFFFFFFF"/> </Trigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsSelected" Value="true"/> <Condition Property="Selector.IsSelectionActive" Value="false"/> </MultiTrigger.Conditions> <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> </MultiTrigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> <ListBox.ItemsPanel> <ItemsPanelTemplate> <VirtualizingStackPanel Orientation="Horizontal" IsItemsHost="True" /> </ItemsPanelTemplate> </ListBox.ItemsPanel> <ListBox.ItemTemplate> <DataTemplate> <Image Source="{Binding Image}" /> </DataTemplate> </ListBox.ItemTemplate> </ListBox>

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• 500 Metro Style WP7 Icons

  - by Bil Simser

  I was inspired by The Noun Project, a project that offers up “Metro-style” icons in SVG format. The project is licensed under a public domain license and while it’s a great project, all of the content is in SVG format. Jon Galloway has a great post (from 2007) talking about the differences between SVG and XAML so I highly recommend that for some background. I thought it would be helpful to the WPF/Windows Phone 7/Silverlight community to provide the content in alternative formats for use in your applications. The Goods I’ve put together a package of the 500 icons (502 actually) in PNG, XAML and the original SVG format along with a couple of sample projects so you can see them in action. There’s a WPF desktop app: And a Windows Phone 7 app: Building It To get all the content first I wrote up a quick program to suck the original SVG files. Luckily they’re all in a common path just named 1.SVG, 2.SVG, and so on. Easy sleazy to grab the contents. Once I had 500 SVG files I used the latest copy of XamlTune, an open source CodePlex project that has a command line conversion tool to convert the directory of SVG files into XAML (the tool also created a PNG file of each SVG so that’s just icing on the cake). Conversions The conversion from SVG to XAML isn’t 100%. While you can just drop the content into a WPF app, it doesn’t work that way for WP7. There are just some small adjustments I made to each format so you’ll have to do the same. Follow the information below or refer to the sample applications. As a sample, here’s an icon we want to use: Here’s the original SVG file: <svg version="1.0" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="100px" height="94.616px" viewBox="0 0 100 94.616" enable-background="new 0 0 100 94.616" xml:space="preserve"> <path d="M25.076,15.639c4.324,0.009,7.824-3.488,7.82-7.82C32.9,3.512,29.4,0.012,25.076,0c-4.313,0.012-7.814,3.512-7.821,7.819 C17.262,12.15,20.763,15.648,25.076,15.639L25.076,15.639z"/> <path d="M4.593,43.388h6.861l4.137-15.135h1.716L13.22,43.388h24.318l-4.389-15.135h1.817l2.32,7.415 c1.08,3.131,3.852,3.851,6.003,1.162l8.375-10.142c2.651-3.42-2.104-7.021-4.844-4.035l-4.993,5.952 c0.007,0.095-0.96-3.278-0.96-3.278c-1.135-3.978-4.918-7.903-10.595-7.922H19.576c-5.071,0.019-9.043,4.434-9.888,7.214 L4.593,43.388L4.593,43.388z"/> <polygon points="56.206,22.753 56.206,7.163 49.192,7.163 49.192,22.753 56.206,22.753 "/> <path d="M79.87,15.738c4.332-0.014,7.831-3.516,7.82-7.82c0.011-4.332-3.488-7.833-7.82-7.82c-4.306-0.013-7.806,3.488-7.821,7.82 C72.064,12.222,75.564,15.725,79.87,15.738L79.87,15.738z"/> <path d="M89.759,89.556v-43.19h5.751V22.804c0.007-3.079-2.757-5.448-6.71-5.449H70.436c-3.65,0.001-4.539,1.186-5.551,2.168 L49.597,37.889c-3.098,3.848,2.428,8.333,5.55,4.743L69.88,25.226v64.43c-0.019,6.475,9.06,6.686,9.081,0.201v-36.58h1.765v36.379 C80.748,96.109,89.772,96.13,89.759,89.556L89.759,89.556z"/> <polygon points="100,54.035 100,45.155 0,45.155 0,54.035 100,54.035 "/> </svg> Here’s the XAML that XamlTune created. It can be used in any WPF app without any changes: <Canvas Name="Layer_1" Width="100" Height="94.616" ClipToBounds="True" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M25.076,15.639C29.4,15.648 32.9,12.151 32.896,7.819 32.9,3.512 29.4,0.012 25.076,0 20.763,0.012 17.262,3.512 17.255,7.819 17.262,12.15 20.763,15.648 25.076,15.639L25.076,15.639z" /> </Path.Data> </Path> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M4.593,43.388L11.454,43.388 15.591,28.253 17.307,28.253 13.22,43.388 37.538,43.388 33.149,28.253 34.966,28.253 37.286,35.668C38.366,38.799,41.138,39.519,43.289,36.83L51.664,26.688C54.315,23.268,49.56,19.667,46.82,22.653L41.827,28.605C41.834,28.7 40.867,25.327 40.867,25.327 39.732,21.349 35.949,17.424 30.272,17.405L19.576,17.405C14.505,17.424,10.533,21.839,9.688,24.619L4.593,43.388 4.593,43.388z" /> </Path.Data> </Path> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M56.206,22.753L56.206,7.163 49.192,7.163 49.192,22.753 56.206,22.753z" /> </Path.Data> </Path> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M79.87,15.738C84.202,15.724 87.701,12.222 87.69,7.918 87.701,3.586 84.202,0.0849999999999991 79.87,0.097999999999999 75.564,0.084999999999999 72.064,3.586 72.049,7.918 72.064,12.222 75.564,15.725 79.87,15.738L79.87,15.738z" /> </Path.Data> </Path> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M89.759,89.556L89.759,46.366 95.51,46.366 95.51,22.804C95.517,19.725,92.753,17.356,88.8,17.355L70.436,17.355C66.786,17.356,65.897,18.541,64.885,19.523L49.597,37.889C46.499,41.737,52.025,46.222,55.147,42.632L69.88,25.226 69.88,89.656C69.861,96.131,78.94,96.342,78.961,89.857L78.961,53.277 80.726,53.277 80.726,89.656C80.748,96.109,89.772,96.13,89.759,89.556L89.759,89.556z" /> </Path.Data> </Path> <Path Fill="#FF000000"> <Path.Data> <PathGeometry FillRule="Nonzero" Figures="M100,54.035L100,45.155 0,45.155 0,54.035 100,54.035z" /> </Path.Data> </Path> </Canvas> The XAML works AS-IS in a WPF application but there are some changes I did to get it to work in a WP7 app. Here’s the modified XAML in a WP7 application: <Canvas Grid.Row="0" Grid.Column="0" Name="Icon_1" Width="100" Height="94.616"> <Path Fill="#FF000000" Data="M25.076,15.639C29.4,15.648 32.9,12.151 32.896,7.819 32.9,3.512 29.4,0.012 25.076,0 20.763,0.012 17.262,3.512 17.255,7.819 17.262,12.15 20.763,15.648 25.076,15.639L25.076,15.639z"> </Path> <Path Fill="#FF000000" Data="M4.593,43.388L11.454,43.388 15.591,28.253 17.307,28.253 13.22,43.388 37.538,43.388 33.149,28.253 34.966,28.253 37.286,35.668C38.366,38.799,41.138,39.519,43.289,36.83L51.664,26.688C54.315,23.268,49.56,19.667,46.82,22.653L41.827,28.605C41.834,28.7 40.867,25.327 40.867,25.327 39.732,21.349 35.949,17.424 30.272,17.405L19.576,17.405C14.505,17.424,10.533,21.839,9.688,24.619L4.593,43.388 4.593,43.388z"> </Path> <Path Fill="#FF000000" Data="M56.206,22.753L56.206,7.163 49.192,7.163 49.192,22.753 56.206,22.753z"> </Path> <Path Fill="#FF000000" Data="M79.87,15.738C84.202,15.724 87.701,12.222 87.69,7.918 87.701,3.586 84.202,0.0849999999999991 79.87,0.097999999999999 75.564,0.084999999999999 72.064,3.586 72.049,7.918 72.064,12.222 75.564,15.725 79.87,15.738L79.87,15.738z"> </Path> <Path Fill="#FF000000" Data="M89.759,89.556L89.759,46.366 95.51,46.366 95.51,22.804C95.517,19.725,92.753,17.356,88.8,17.355L70.436,17.355C66.786,17.356,65.897,18.541,64.885,19.523L49.597,37.889C46.499,41.737,52.025,46.222,55.147,42.632L69.88,25.226 69.88,89.656C69.861,96.131,78.94,96.342,78.961,89.857L78.961,53.277 80.726,53.277 80.726,89.656C80.748,96.109,89.772,96.13,89.759,89.556L89.759,89.556z"> </Path> <Path Fill="#FF000000" Data="M100,54.035L100,45.155 0,45.155 0,54.035 100,54.035z"> </Path> </Canvas> All I did was take the data portion and put it directly into a Data attribute on the Path. Note that while it does show up in the app (on the emulator or device) it wouldn’t show up in Visual Studio for me. Maybe some XAML guru out there can tell me why. You can just as easily use the PNG files in WP7 but if you want the crispness of vector graphics, go for the XAML version. Of course with XamlTune being open source you could always modify the output of that program to cater it to your app. If you do make a change that’s worthy please consider submitting a patch to the project so everyone can benefit. Hope this helps and happy programming! Resources and Links Sample Project and Icons XamlTune an open source project to convert SVG to XAML The Noun Project source of the original files Jon Galloways post on SVG and XAML StackOverflow question on converting SVG to XAML

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• WPF Binding to DataRow Columns

  - by Trindaz

  Hi, I've taken some sample code from http://sweux.com/blogs/smoura/index.php/wpf/2009/06/15/wpf-toolkit-datagrid-part-iv-templatecolumns-and-row-grouping/ that provides grouping of data in a WPF DataGrid. I'm modifying the example to use a DataTable instead of a Collection of entities. My problem is in translating a binding declaration {Binding Parent.IsExpanded}, which works fine where Parent is a reference to an entity that has the IsExpanded attribute, to something that will work for my weakly typed DataTable, where Parent is the name of a column and references another DataRow in the same DataTable. I've tried declarations like {Binding Parent.Items[IsExpanded]} and {Binding Parent("IsExpanded")} but none of these seem to work. How can I create a binding to the IsExpanded column of the DataRow Parent in my DataTable? Thanks in advance, Dave

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• WPF DataGrid issue with db40

  - by Rich Blumer

  I am using the following code to populate a wpf datagrid with items in my db4o OODB: IObjectContainer db = Db4oEmbedded.OpenFile(Db4oEmbedded.NewConfiguration(), "C:\Dev\ContractKeeper\Database\ContractKeeper.yap"); var contractTypes = db.Query(typeof(ContractType)); this.dataGrid1.ItemsSource = contractTypes.ToList(); Here is the XAML: <Window x:Class="ContractKeeper.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:dg="http://schemas.microsoft.com/wpf/2008/toolkit" Title="Window1" Height="300" Width="300"> <Grid> <dg:DataGrid AutoGenerateColumns="True" Margin="12,102,12,24" Name="dataGrid1" /> </Grid> </Window> When the items get bound to the datagrid, the gridlines appear like there are records but no data is displayed. Has anyone had this issue with db4o and the wpf datagrid?

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• User Control inherit from ListBox in Wpf?

  - by Rev

  Hi. I want to make a user Control in WPf with same properties and events like ListBox.(can add items , remove them , selecting ,...) on way in windows App is use a user control which is inherit form ListBox. but in WPF I don't know how make User Control inherit from ListBox (or other WPF Control)!!! I write this code but it had an exception public partial class InboxListItem : ListBox { public InboxListItem() { InitializeComponent(); } and It's Xaml file <UserControl x:Class="ListBoxControl.InboxListItem" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:myTypes="clr-namespace:ListBoxControl" />

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• What is Silverlight's relationship -- if any -- to WPF?

  - by xarzu

  I was working with a WPF application and I decided that the controls and graphics I wanted to display on the grid might look better if it was a silverlight component. I thought this way because of all the cool silverlight controls that look very flash-like. But now that I have gottem my Visual Studio 2010 set up with SIlverlight, it seems that every silverlight app I can make are ASP.NET in nature. It seems that instead of a cool GUI control to make, Silverlight is telling me that it is primarely a dataflow sort of application for the web. What is the relationship, if any, between WPF and Silverlight. Can I or can I not put a silverlight control into my existing WPF application?

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• WPF Some styles not applied on DataTemplate controls

  - by Martin

  Hi, I am trying to learn something about WPF and I am quite amazed by its flexibility. However, I have hit a problem with Styles and DataTemplates, which is little bit confusing. I have defined below test page to play around a bit with styles etc and found that the Styles defined in <Page.Resources> for Border and TextBlock are not applied in the DataTemplate, but Style for ProgressBar defined in exactly the same way is applied. Source code (I just use Kaxaml and XamlPadX to view the result) <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Page.Resources> <Style TargetType="{x:Type Border}"> <Setter Property="Background" Value="SkyBlue"/> <Setter Property="BorderBrush" Value="Black"/> <Setter Property="BorderThickness" Value="2"/> <Setter Property="CornerRadius" Value="5"/> </Style> <Style TargetType="{x:Type TextBlock}"> <Setter Property="FontWeight" Value="Bold"/> </Style> <Style TargetType="{x:Type ProgressBar}"> <Setter Property="Height" Value="10"/> <Setter Property="Width" Value="100"/> <Setter Property="Foreground" Value="Red"/> </Style> <XmlDataProvider x:Key="TestData" XPath="/TestData"> <x:XData> <TestData xmlns=""> <TestElement> <Name>Item 1</Name> <Value>25</Value> </TestElement> <TestElement> <Name>Item 2</Name> <Value>50</Value> </TestElement> </TestData> </x:XData> </XmlDataProvider> <HierarchicalDataTemplate DataType="TestElement"> <Border Height="45" Width="120" Margin="5,5"> <StackPanel Orientation="Vertical" Margin="5,5" VerticalAlignment="Center" HorizontalAlignment="Center"> <TextBlock HorizontalAlignment="Center" Text="{Binding XPath=Name}"/> <ProgressBar Value="{Binding XPath=Value}"/> </StackPanel> </Border> </HierarchicalDataTemplate> </Page.Resources> <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center"> <StackPanel Orientation="Vertical" VerticalAlignment="Center"> <Border Height="45" Width="120" Margin="5,5"> <StackPanel Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center"> <TextBlock HorizontalAlignment="Center" Text="Item 1"/> <ProgressBar Value="25"/> </StackPanel> </Border> <Border Height="45" Width="120" Margin="5,5"> <StackPanel Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center"> <TextBlock HorizontalAlignment="Center" Text="Item 2"/> <ProgressBar Value="50"/> </StackPanel> </Border> </StackPanel> <ListBox Margin="10,10" Width="140" ItemsSource="{Binding Source={StaticResource TestData}, XPath=TestElement}"/> </StackPanel> </Page> I suspect it has something to do with default styles etc, but more puzzling is why some Styles are applied and some not. I cannot find an easy explanation for above anywhere and thus would like to ask if someone would be kind enough to explain this behaviour in lamens' terms with possible links to technical description, i.e. to MSDN or so. Thanks in advance for you support!

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• wpf toolkit (Feb 2010) datagrid with MVVM - style reveals name of view model on 'spare column'

  - by Andy Clarke

  Hi, I've just updated my app with the latest WPF toolkit and I've now got an issue with my styling. When I bind some data with, for example, two columns to the grid, the spare area at the right shows the name of the ViewModel in the header. I can understand why, because the data grids data context is the ViewModel and I'm defining my header style as follows ... <WpfToolkit:DataGridHeaderBorder <Border BorderBrush="Blue" BorderThickness="0,1,0,0"> <TextBlock Text="{Binding}" Margin="4,0,4,0" /> </Border> </WpfToolkit:DataGridHeaderBorder> Do I now need a separate style for the 'spare column' or something? Can anyone assist please? Cheers, Andy

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• Create a grid in WPF as Template programmatically

  - by wickie79

  I want to create a basic user control with a style programmatically. In this style i want to add a Grid (no problem), but i dont can add column definitions to this grid. My example code is ControlTemplate templ = new ControlTemplate(); FrameworkElementFactory mainPanel = new FrameworkElementFactory(typeof(DockPanel)); mainPanel.SetValue(DockPanel.LastChildFillProperty, true); FrameworkElementFactory headerPanel = new FrameworkElementFactory(typeof(StackPanel)); headerPanel.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal); headerPanel.SetValue(DockPanel.DockProperty, Dock.Top); mainPanel.AppendChild(headerPanel); FrameworkElementFactory headerImg = new FrameworkElementFactory(typeof(Image)); headerImg.SetValue(Image.MarginProperty, new Thickness(5)); headerImg.SetValue(Image.HeightProperty, 32d); headerImg.SetBinding(Image.SourceProperty, new Binding("ElementImage") { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent) }); headerPanel.AppendChild(headerImg); FrameworkElementFactory headerTitle = new FrameworkElementFactory(typeof(TextBlock)); headerTitle.SetValue(TextBlock.FontSizeProperty, 16d); headerTitle.SetValue(TextBlock.VerticalAlignmentProperty, VerticalAlignment.Center); headerTitle.SetBinding(TextBlock.TextProperty, new Binding("Title") { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent) }); headerPanel.AppendChild(headerTitle); FrameworkElementFactory mainGrid = new FrameworkElementFactory(typeof(Grid)); FrameworkElementFactory c1 = new FrameworkElementFactory(typeof(ColumnDefinition)); c1.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Star)); FrameworkElementFactory c2 = new FrameworkElementFactory(typeof(ColumnDefinition)); c2.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Auto)); FrameworkElementFactory c3 = new FrameworkElementFactory(typeof(ColumnDefinition)); c3.SetValue(ColumnDefinition.WidthProperty, new GridLength(3, GridUnitType.Star)); FrameworkElementFactory colDefinitions = new FrameworkElementFactory(typeof(ColumnDefinitionCollection)); colDefinitions.AppendChild(c1); colDefinitions.AppendChild(c2); colDefinitions.AppendChild(c3); mainGrid.AppendChild(colDefinitions); mainPanel.AppendChild(mainGrid); FrameworkElementFactory content = new FrameworkElementFactory(typeof(ContentPresenter)); content.SetBinding(ContentPresenter.ContentProperty, new Binding() { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent), Path = new PropertyPath("Content") }); mainGrid.AppendChild(content); templ.VisualTree = mainPanel; Style mainStyle = new Style(); mainStyle.Setters.Add(new Setter(UserControl.TemplateProperty, templ)); this.Style = mainStyle; But the creation of FrameworkElementFactory with type ColumnDefinitionCollection will throw an exception "'ColumnDefinitionCollection' type must derive from FrameworkElement, FrameworkContentElement, or Visual3D." Who can help me?

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• Window out of the screen when maximized using WPF shell integration library

  - by Eduardo Molteni

  I'm using the WPF Shell Integration Library to create a custom chrome of my wpf app. All is good, but when maximizing the app, 6 or 7 pixels are out of the screen. This is the code I'm using: <Style TargetType="{x:Type local:MainWindow}"> <Setter Property="shell:WindowChrome.WindowChrome"> <Setter.Value> <shell:WindowChrome ResizeBorderThickness="6" CaptionHeight="10" CornerRadius="0" GlassFrameThickness="1"/> </Setter.Value> </Setter> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:MainWindow}"> <Grid> <Border BorderThickness="1" BorderBrush="#389FD1" Background="#389FD1"> <ContentPresenter Margin="0,22,0,0" Content="{TemplateBinding Content}"/> </Border> <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Top" > <TextBlock Text="{Binding NombreUsuario}" Foreground="White" Margin="5,5,20,5" Opacity=".8" /> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowMinimize" shell:WindowChrome.IsHitTestVisibleInChrome="True"> <Image Height="10" Width="10" Source="/Resources/Images/minimize.png" /> </Button> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowMaximizeRestore" shell:WindowChrome.IsHitTestVisibleInChrome="True" > <Image Height="10" Width="10" Source="/Resources/Images/maximize.png" /> </Button> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowClose" shell:WindowChrome.IsHitTestVisibleInChrome="True"> <Image Height="10" Width="10" Source="/Resources/Images/close.png" /> </Button> </StackPanel> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>

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• Collapsed Visibility Within a WPF ComboBoxItem

  - by user832747

  I used a Style setter to stretch out my ComboBoxItem (and button) so that it spans the entire length of the ComboBox like so: <ComboBox > <ComboBox.Resources> <Style TargetType="ComboBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch" /> </Style> </ComboBox.Resources> <ComboBoxItem > <DockPanel > <Button Content="My Button" /> </DockPanel> </ComboBoxItem> </ComboBox> This works fine. Now, I add an additional button within the same ComboBoxItem, but have it set to Visibility Collapsed. <ComboBox > <ComboBox.Resources> <Style TargetType="ComboBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch" /> </Style> </ComboBox.Resources> <ComboBoxItem > <DockPanel > <Button Content="My Button" /> <Button Content="My Collapsed Button" Visibility="Collapsed" /> </DockPanel> </ComboBoxItem> </ComboBox> Now, the new button is invisible, but I expected my original button to still stretch the entire ComboBox, like it does with the above code. However, it does not. Why is this so? Is there a solution for this? I am using DataTriggers to edit the Visibility property. NOTE: I also get the same thing if I just set HorizontalContentAlignment="Stretch" in the ComboBox. UPDATE: Ok, this actually has something to do with the DockPanel. I changed it to a StackPanel, and it works as desired. However, I suppose I'm still curious as to why my first button would not stretch the entire DockPanel if the second button is collapsed?

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• wpf keep base style in custom control

  - by Archana R

  Hello, I have created a custom button as i wanted an image and a text inside it as follows: <Style TargetType="{x:Type Local:ImageButton}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Local:ImageButton}"> <StackPanel Height="Auto" Orientation="Horizontal"> <Image Margin="0,0,3,0" Source="{TemplateBinding ImageSource}"/> <TextBlock Text="{TemplateBinding Content}" /> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> Here, ImageButton is a class which inherits from Button class and has ImageSource as a dependency property. But i want to keep the look and feel of the original button. How can i do it? Thanks.

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• MEF CompositionInitializer for WPF

  - by Reed

  The Managed Extensibility Framework is an amazingly useful addition to the .NET Framework.  I was very excited to see System.ComponentModel.Composition added to the core framework.  Personally, I feel that MEF is one tool I’ve always been missing in my .NET development. Unfortunately, one perfect scenario for MEF tends to fall short of it’s full potential is in Windows Presentation Foundation development.  In particular, there are many times when the XAML parser constructs objects in WPF development, which makes composition of those parts difficult.  The current release of MEF (Preview Release 9) addresses this for Silverlight developers via System.ComponentModel.Composition.CompositionInitializer.  However, there is no equivalent class for WPF developers. The CompositionInitializer class provides the means for an object to compose itself.  This is very useful with WPF and Silverlight development, since it allows a View, such as a UserControl, to be generated via the standard XAML parser, and still automatically pull in the appropriate ViewModel in an extensible manner.  Glenn Block has demonstrated the usage for Silverlight in detail, but the same issues apply in WPF. As an example, let’s take a look at a very simple case.  Take the following XAML for a Window: <Window x:Class="WpfApplication1.MainView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="220" Width="300"> <Grid> <TextBlock Text="{Binding TheText}" /> </Grid> </Window> This does nothing but create a Window, add a simple TextBlock control, and use it to display the value of our “TheText” property in our DataContext class.  Since this is our main window, WPF will automatically construct and display this Window, so we need to handle constructing the DataContext and setting it ourselves. We could do this in code or in XAML, but in order to do it directly, we would need to hard code the ViewModel type directly into our XAML code, or we would need to construct the ViewModel class and set it in the code behind.  Both have disadvantages, and the disadvantages grow if we’re using MEF to compose our ViewModel. Ideally, we’d like to be able to have MEF construct our ViewModel for us.  This way, it can provide any construction requirements for our ViewModel via [ImportingConstructor], and it can handle fully composing the imported properties on our ViewModel.  CompositionInitializer allows this to occur. We use CompositionInitializer within our View’s constructor, and use it for self-composition of our View.  Using CompositionInitializer, we can modify our code behind to: public partial class MainView : Window { public MainView() { InitializeComponent(); CompositionInitializer.SatisfyImports(this); } [Import("MainViewModel")] public object ViewModel { get { return this.DataContext; } set { this.DataContext = value; } } } We then can add an Export on our ViewModel class like so: [Export("MainViewModel")] public class MainViewModel { public string TheText { get { return "Hello World!"; } } } MEF will automatically compose our application, decoupling our ViewModel injection to the DataContext of our View until runtime.  When we run this, we’ll see: There are many other approaches for using MEF to wire up the extensible parts within your application, of course.  However, any time an object is going to be constructed by code outside of your control, CompositionInitializer allows us to continue to use MEF to satisfy the import requirements of that object. In order to use this from WPF, I’ve ported the code from MEF Preview 9 and Glenn Block’s (now obsolete) PartInitializer port to Windows Presentation Foundation.  There are some subtle changes from the Silverlight port, mainly to handle running in a desktop application context.  The default behavior of my port is to construct an AggregateCatalog containing a DirectoryCatalog set to the location of the entry assembly of the application.  In addition, if an “Extensions” folder exists under the entry assembly’s directory, a second DirectoryCatalog for that folder will be included.  This behavior can be overridden by specifying a CompositionContainer or one or more ComposablePartCatalogs to the System.ComponentModel.Composition.Hosting.CompositionHost static class prior to the first use of CompositionInitializer. Please download CompositionInitializer and CompositionHost for VS 2010 RC, and contact me with any feedback. Composition.Initialization.Desktop.zip Edit on 3/29: Glenn Block has since updated his version of CompositionInitializer (and ExportFactory<T>!), and made it available here: http://cid-f8b2fd72406fb218.skydrive.live.com/self.aspx/blog/Composition.Initialization.Desktop.zip This is a .NET 3.5 solution, and should soon be pushed to CodePlex, and made available on the main MEF site.

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• WPF - Centering a checkbox in a GridViewColumn?

  - by Sonny Boy

  Hey all, I'm currently struggling on getting my checkboxes to property center within my GridViewColumns. I've defined a style for my checkboxes like so: <Style TargetType="{x:Type CheckBox}" x:Key="DataGridCheckBox"> <Setter Property="HorizontalAlignment" Value="Center" /> <Setter Property="HorizontalContentAlignment" Value="Center" /> <Setter Property="IsEnabled" Value="False" /> <Setter Property="Margin" Value="4" /> <Setter Property="VerticalAlignment" Value="Center" /> <Setter Property="VerticalContentAlignment" Value="Center" /> <Setter Property="Width" Value="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type GridViewColumn}},Path=ActualWidth}" /> </Style> And my checkboxes are added into the GridViewColumn using a DataTemplate like this: <GridViewColumn Header="Comment"> <GridViewColumn.CellTemplate> <DataTemplate> <CheckBox Style="{StaticResource DataGridCheckBox}" IsChecked="{Binding PropertyItem.Comment, Converter={StaticResource booleanConverter}, ConverterParameter='string'}"/> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> But the problem I have is that the checkboxes remain left-aligned (even when resizing the column). Any ideas? Thanks in advance, Sonny

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• WPF TextBox SpellChecking Problem

  - by Alex

  How can I change the spellchecking language of a WPF textbox to french using XAML? I tried this but it doesn't work. <TextBox AcceptsReturn="true" SpellCheck.IsEnabled="true" FontSize="12" BorderBrush="Blue" Height="100" Language="fr-fr" /> French is supposed to be one of the 4 supported languages for spellchecking in WPF so I don't understand why it doesn't work. I also tried fr-CA but it still won't work.

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• WPF: Drag/Drop to re-order grid and jiggle

  - by Echilon

  I need to implement a grid in WPF which has squares that can be dragged/dropped to be re-ordered, but I'm not sure the best way to do it. I was thinking using an ObservableCollection of squares and a UniFormGrid but although I have experience with both WPF and drag/drop, ideally I'd like to do a kind of 'jiggle' when before the user releases the mouse. Any suggestions on a good starting point?

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• using WPF navigation in standalone applications

  - by ArsenMkrt

  Is using WPF navigation in standalone applications is best practice? And can it be used with WPF MVVM pattern?

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• What is the Best WPF Ribbon Control Suite?

  - by steve

  I'm going to add a WPF Ribbon UI to my program. What is the best suite of WPF controls including a ribbon control, based on your experiences? Thanks!

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