How can i make this CommandParameter work?
c#,wpf,xaml,binding,commandparameter
<Window x:Class="WpfApplication2.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mine="clr-namespace:WpfApplication2" Title="MainWindow" Height="350" Width="525"> <Grid> <mine:SquareControl Coordinates="{Binding VMCoordinates, Mode=TwoWay}"/> </Grid> </Window> In this case the namespace 'mine' is the namespace of your app. So in the main window the line inside the grid says "Place an instance of SquareControl in my view...
DataBinding Issue while using MultiDataTrigger
That's because the VisualBrush doesn't have a DataContext. You have to use some proxy element. Define your proxy element: public class DataContextProxy: Freezable { public DataContextProxy() { BindingOperations.SetBinding(this, DataContextProperty, new Binding()); } public object DataContext { get { return GetValue(DataContextProperty); } set { SetValue(DataContextProperty, value); } } public static readonly...
Checkbox checked event not firing in wpf
Here is a simple example: <Window x:Class="CheckboxCheckedCommand.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <CheckBox Content="Case Sensitive" Command="{Binding checkedCommand}"/> </Grid> Codebehind: public partial class MainWindow : Window { public ViewModel vm { get; set; } public MainWindow() { InitializeComponent(); vm = new ViewModel(); this.DataContext = vm; } }...
C# XAML - How to add a combobox to some datagrid ROWS but not others?
Try using a DataTrigger with predefined DataTemplate items: <DataTemplate x:Key="OneItem" DataType="{x:Type ValueItem}" > <TextBox Text="{TemplateBinding Id}" /> </DataTemplate> <DataTemplate x:Key="MultiItems" DataType="{x:Type ValueItem}" > <ComboBox ItemsSource="{TemplateBinding ValueItems}" DisplayMemberPath="ValueName" SelectedValuePath="ID" SelectedValue="{TemplateBinding Id}" /> </DataTemplate> And then use a Content control to place the style accordingly. I haven't tried this but your data...
WPF bindings do not pick up any changes
c#,wpf,xaml,mvvm,inotifypropertychanged
You are not changing the value of the TestString, you are assigning a command to change the value but you do not seem to be executing it. this.RunCommand = new RelayCommand(this.RunAction); Bind that command to something or execute it manually from somewhere. Also you need to assign the property not...
How to Add Click event in Stack Layout or Frame
android,ios,xaml,xamarin,xamarin.forms
You can add a TapGestureRecognizer to the StackLayout in XAML like this: <StackLayout Grid.Column="0" BackgroundColor="#313FA0" Grid.Row="0"> <StackLayout.GestureRecognizers> <TapGestureRecognizer Tapped="OnTapped"/> </StackLayout.GestureRecognizers> </StackLayout> Then you can implement the OnTapped method in the code behind: void OnTapped(object sender, EventArgs e) { // Do stuff } There is a really good guide at the...
Aligning StackPanel to top-center in Canvas
If you don't want any input or hit testing on a certain element you should set the IsHitTestVisible property to false: <Grid> <Canvas Name="Canvas" Background="#EFECCA"> <DockPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Width="{Binding ActualWidth, ElementName=Canvas}" Height="{Binding ActualHeight, ElementName=Canvas}" MouseLeftButtonDown="DockPanel_MouseLeftButtonDown" TouchDown="DockPanel_TouchDown" Panel.ZIndex="2" Background="Transparent"> </DockPanel> <Button Width="50" Height="50"...
Change the Location of DefaultPage in Universal App
First, you don't need to give different names to your files, use MainPage for both phone and pc project and put MainPage.xaml inside the view folder. The Universal App will be aware of which platforms it runs on and it will load the right page accordingly. You need to create...
Which toolbox does facebook app use
Your question is very unclear but I'll share some information about ListView. I don't know which facebook app is that but official Facebook App (not beta) is using ListView too AFAIK.You can customize ListView's Style and ItemTemplate to achieve that. Theese 2 MSDN articles about ListView will help you. https://msdn.microsoft.com/library/windows/apps/windows.ui.xaml.controls.listview.aspx...
windows phone 8.1: Hide stackpanel if textblock is empty
c#,xaml,windows-phone-8,windows-phone-8.1,visualstatemanager
You can write converter to hide/show stackpanel public class BooleanToVisibilityConvertor: IValueConverter { public object Convert(object value, Type targetType, object parameter, string language) { if(value!=null) { if (!string.IsNullOrEmpty(value.ToString())) { return Visibility.Visible; } } return Visibility.Collapsed; } public object ConvertBack(object value, Type targetType, object parameter, string language) { throw new NotImplementedException(); }...
WPF/XAML ResourceDictionary with blank space
You can add xml:space="preserve" to your resource. This will, like it says, preserve the space. <System:String xml:space="preserve" x:Key="NumStartsTotal">Total: </System:String> More info here and here....
How to set TextBox to be resized when DataGridTemplateColumn size changes
Add a Header Style to your DataGrid. <DataGridTemplateColumn Width="200"> <DataGridTemplateColumn.HeaderStyle> <Style TargetType="{x:Type DataGridColumnHeader}"> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> </Style> </DataGridTemplateColumn.HeaderStyle> <DataGridTemplateColumn.HeaderTemplate> ... </DataGridTemplateColumn.HeaderTemplate> ... ...
Setting binding on usercontrol to mainwindow's ViewModel
.net,wpf,xaml,mvvm,data-binding
On your UserControl's code-behind (FilterTraceDataControl.xaml.cs), add a DependencyProperty, like this: public string Text { get { return (string)this.GetValue(TextProperty); } set { this.SetValue(TextProperty, value); } } public static readonly DependencyProperty TextProperty = DependencyProperty.Register( "Text", typeof(string), typeof(FilterTraceDataControl),new PropertyMetadata(null)); Then bind your UserControl's TextBox to it by RelativeSource or ElementName: <TextBox x:Name="PartNumbTextBox" Width="120"...
while Inherit style in WPF it affect parent style
If you declare a Style without an x:Key, it will override the default style for that control. <Style TargetType="local:CustomControl"> So the code above will effect all CustomControl elements throughout the entire application (or within the scope). If you do not want to override the base style, you can give your...
Change GroupBox Header location
Add a margin or padding to your label like this: <GroupBox Grid.Row="2" Background="LightSteelBlue" Margin="0,-20,0,0" > <GroupBox.Header> <Label FontSize="15" VerticalAlignment="Bottom" FontFamily="Calibri" Padding="0,20,0,0" FontWeight="ExtraBold">Traceability Data</Label> </GroupBox.Header> </GroupBox> Padding seems to give a better results....
HorizontalContentAlignment does not appear
StackPanel has a property called as "FlowDirection". Is this what you are looking for? <StackPanel Orientation="Horizontal" DockPanel.Dock="Top" Background="Yellow" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,2,2,0" Name="MainButtonsPanel" Width="400" FlowDirection="RightToLeft"> ...
Comparing Button.Background with Colors
I finally have gotten the answer to this. Thank you @dub stylee and @Hans Passant I caste the background as a solidcolorbrush then used its color property and compared it to the Windows.Ui.Colors.Green Here is the code. if (((sender as Button).Background as SolidColorBrush).Color != Windows.UI.Colors.Green && ((sender as Button).Background as...
Cannot find XAML element names in code behind on Release
c#,wpf,xaml,visual-studio-2013
After all the error was my own. I had a third party dll in the solution directly referenced from the Debug folder. Even though the CopyLocal was set to True the dll was not automatically copied in the Release folder. Now I've moved the dll in the Resources folder and...
TargetType does not match type of element
a FocusVisualStyle allows you to provide visual feedback to the user when a control is focused. For example, adding a Rectangle which looks like a border of the control. A Style is the look and feel of the control itself. It's all explained here. FocusVisualStyle is not the style for...
Referencing event from .xaml file in .fs file
As there's no code-behind you can't call the method from XAML but need to attach it from the outside: let AboutStack_MouseRightButtonDown args = // do whatever you want, return unit wnd.MouseRightButtonDown.Add(AboutStack_MouseRightButtonDown) or e.g. wnd.MouseRightButtonDown.Add(fun _ -> MessageBox.Show("Click!") |> ignore) Another approach would be to use a model (DataContext) and bindings...
WPF Interactions CallMethodAction for DataTemplate in ListCheckBox thrown a exception “Could not find method on object of type”
This is probably what you're looking for: public void PropertyUnchecked(object sender, RoutedEventArgs e) { var item = ((ContentPresenter)((CheckBox)e.Source).TemplatedParent).Content as CheckedListItem<TProperty>; } Edit Passing parameters to PropertyUnchecked (e.g. PropertyUnchecked(object customParam, object sender, RoutedEventArgs e)) was not as easy as I expected because CallMethodAction is very strict on certain signatures and does...
GridView with two columns Win Phone 8.1
Gridview works fine in Windows Phone apps. Here is code from one of my apps in the app store. You need to set the size of the outer most 'Grid' of the DataTemplate. You won't be able to get the grids to fit the screen exactly unless you do some...
Take element's parent name, a few levels above
It is not very clear from your question what you are trying to achieve so I will make some assumptions. I think you want get the DataContext of the TabItem where the button was pressed, but you are binding all the buttons to the same click event handler. If I...
Wrap text with indent in WPF textBlock
I have find a workaround by using converter: <ListBox x:Name="actionList" Height="150" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MouseMove="ListBoxMouseMove" ScrollViewer.VerticalScrollBarVisibility="Visible" SelectionMode="Extended" Style="{StaticResource CustomListBoxStyle}"> <ListBox.ItemTemplate> <DataTemplate> <TextBlock x:Name="textBlock" Width="235" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" FontSize="11" Text="{Binding DisplayText, Converter={StaticResource...
Disable/Enable context menu item depending on listview item
Ok it works now. I've setted the AncestorType wrong IsEnabled="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}},Path=SelectedItem.ShowBesItemEn}" ...
DataGridRowTemplateColumn - refactoring and using styles efficiently?
Does this work...? <DataGrid x:Name="CurrentConfigDataGrid" ItemsSource="{Binding}" > <DataGrid.Resources> <ResourceDictionary Source="../ResourceDictionaries/MergedDictionary.xaml" /> <Style TargetType="TextBlock" BasedOn="{StaticResource {x:Type TextBlock}}" /> </DataGrid.Resources> ... Technically, if you create a Style in your Resources, with no Key but with a TargetType, it should be applied automatically to all controls of that type that have no explicit...
WrapPanel grabs focus from its children
Somehow its working fine for me. sharing the code snippet of what I tried. <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> <Image Name="img" Height="100" Width="100"/> <TextBox Name="tb3" Text="text2" KeyDown="tb3_KeyDown" Width="200"/> </Grid> <ScrollViewer Grid.Row="2"> <toolkit:WrapPanel Orientation="Vertical" Name="wp"> </toolkit:WrapPanel> </ScrollViewer> Adding textboxes from code behind TextBox tb2 = new TextBox(); // Constructor public MainPage() {...
ItemsWrapGrid Order in Windows Phone 8.1
c#,xaml,listview,windows-phone-8.1
You want to change the orientation. <ItemsWrapGrid MaximumRowsOrColumns="2" Orientation="Horizontal"></ItemsWrapGrid> ItemsWrapGrid.Orientation property ...
Unable to bind to DataContext
What an idiot I am! I started to respond to @BradleyDotNET (thanks for the response, by the way. It is what helped me solve the problem), and figured out the solution. My class DOES derive from FrameworkElement. I did that because I needed to make use of data binding, even...
ItemsSource bind to collection stays empty
In order to observe changes in a collection WPF provides the ObservableCollection class which implements INotifyCollectionChanged and INotifyPropertyChanged. Replace List<T> with ObservableCollection<T> and your code should work.
Caliburn.Micro attach event handler on event of Behavior
c#,xaml,winrt-xaml,caliburn.micro,behavior
So the problem is that ActionMessage inherits TriggerAction<FrameworkElement> which means it can't attach correctly to SwipeInteractionBehavior. It's also complicated by the fact there's some major API differences between the WPF / Silverlight / Windows Phone 8 Interactivity SDK and the WinRT Interactivity SDK. You can see a bit of what...
How do I, or can I use a static resource for the StringFormat on a TextBlock?
It appears you just have to remove the {}: <system:String x:Key="MyFormat">{0:h\:mm tt}</system:String> The {} is required for attribute values to prevent them from being interpreted as a markup extension. However, with property element syntax, you no longer need the {} because curly braces do not have special meaning in that...
Progressbar for filling TextBox using MVVM Light Toolkit in WinRT
c#,wpf,xaml,mvvm,windows-runtime
You should not notify property changes if the property did not change. You always can know for sure when it becomes empty and the other way around. public string FirstName { get { return this.firstName; } set { if (this.firstName != value) { bool oldValueIsEmpty = String.IsNullOrWhiteSpace(this.firstName); this.firstName = value;...
In pure XAML, is it possible to select a string format on the fly?
Easy peasy with a couple of DataTriggers: <Grid x:Name="LayoutRoot"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <ListBox Grid.Row="0" ItemsSource="{Binding Currencies}" SelectedItem="{Binding SelectedCurrency, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" DisplayMemberPath="Name" /> <TextBlock FontSize="30" Grid.Row="1"> <TextBlock.Style> <Style TargetType="TextBlock"> <Setter Property="Text" Value="{Binding Price,...
WPF Rotate an Image and align it
wpf,xaml,rotation,rendertransform
The problem is that the Transforms were applied after the layout pass. You should use a LayoutTransform to perform the transformation before the layout is calculated: <Image Name="ImageTarget" HorizontalAlignment="Left" VerticalAlignment="Top" Stretch="Uniform" RenderTransformOrigin=".5,.5"> <Image.LayoutTransform> <TransformGroup> <ScaleTransform ScaleX="{Binding Main.BindedViewMode, Converter={StaticResource ImageSizeConverter}}" /> <ScaleTransform ScaleY="{Binding Main.BindedViewMode,...
Custom WPF DataGrid with optional button column
c#,wpf,xaml,datagrid,custom-controls
I had to remove the section from the Generic.xaml style for the DataGrid to properly layout and created the column in code. protected override void OnInitialized(EventArgs e) { base.OnInitialized(e); CloneColumn.Visibility = ShowCloneColumn ? Visibility.Visible : Visibility.Hidden; } private DataGridTemplateColumn _cloneColumn; private DataGridTemplateColumn CloneColumn { get { if (_cloneColumn == null)...
Setting App.xaml-resources' value from codebehind
Color is a structure, which means it is passed by value, not by reference. You are basically making copies of the colors, modifying those copies, and then letting them go out of scope and get deleted. You should put the colors into the resource dictionary by doing something along the...
How to successfully implement WPF textbox validation?
c#,wpf,validation,xaml,visual-studio-2012
Using what you posted, it works fine for me, it produces the red "!" above the textbox. However, I DID remember to set my DataContext, ie. public MainWindow() { InitializeComponent(); this.DataContext = this; } Without this, it won't work....
WPF expander not expanded above buttons make buttons unclickable
I found a way of doing it, with code behind. I put my Expander in a Canvas and I added to my Expander two events: Expanded="searchMenuExpander_Expanded" and Collapsed="searchMenuExpander_Collapsed" which are defined as: private void searchMenuExpander_Expanded(object sender, RoutedEventArgs e) { Canvas.SetZIndex(searchMenuCanvas, 99); } private void searchMenuExpander_Collapsed(object sender, RoutedEventArgs e) { Canvas.SetZIndex(searchMenuCanvas,...
Back button closing app instead of going back on Windows Phone 8.1
I fixed the problem myself by adding an event handler using AddHandler and using Frame.Navigate to go back to the first page. I added this code: Sub New() AddHandler HardwareButtons.BackPressed, AddressOf BackPressed End Sub Sub BackPressed(sender As Object, e As BackPressedEventArgs) e.Handled = True Frame.Navigate(GetType(BasicPage1)) End Sub ...
WinRT control to render XAML UIElement
c#,xaml,windows-runtime,winrt-xaml
Depending on what you want achieve, you can just set your UIElement in the Button.Content property. The Button.Content property can accept any UIElement. For example, you can do the following: MainPage.xaml <Page ...> <StackPanel ...> <Button x:Name="myButton" Width="200" Height="200" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" > <Button.Content> <local:Page2 /> </Button.Content> </Button> </StackPanel> </Page> Page2.xaml...
Windows 10 xaml Controls Centre Screen
xaml,user-interface,windows-universal,windows-10
Don't use Margins for positioning. Use margins only to enforce margins around the object. To center an element in its parent set its HorizontalAlignment or VerticalAlignment to Center. For more control, use layout controls such as Grid, StackPanel, and RelativePanel to position the controls where you want. For your layout...
Zoom into ListView contents without also scaling scroll bars
You could use the always handy FindChild<T> function to retrieve the ScrollContentPresenter inside the ListView, and use your zooming function with it. public Control() { InitializeComponent(); this.Loaded += new RoutedEventHandler(Control_Loaded); } private void Control_Loaded(object sender, RoutedEventArgs e) { var presenter = FindChild<ScrollContentPresenter>(listView, null); var mouseWheelZoom = new MouseWheelZoom(presenter); PreviewMouseWheel +=...
Slider progress bar with MediaElement Windows Phone 8.1
c#,xaml,slider,windows-phone-8.1,mediaelement
You are setting things up in the wrong order. Try changing it to this: if (listVmItem != null) { var file2 = await _finalStorageFolder.GetFileAsync(listVmItem.FileName); var stream = (await file2.OpenReadAsync()).AsStream().AsRandomAccessStream(); AudioPlayer.MediaOpened += AudioPlayer_MediaOpened; AudioPlayer.CurrentStateChanged += AudioPlayer_CurrentStateChanged; AudioPlayer.SetSource(stream, file2.ContentType); AudioPlayer.Play(); } and move these calls to the MediaOpened handler: TimeSpan recordingTime =...
What am I doing wrong so the data binding target doesn't get affected by data binding source
You first attempt is incorrect as the Binding path is relative to the DataContext of the TextBlock. You are trying to bind to a specific element, so you can use ElementName to specify the source and then the path is relative to this: Text="{Binding ElementName=TextBox1, Path=Text}" The idiomatic approach to...
How to change mediaelement to scale in portrait and fullscreen in landscape mode on Windows Phone 8.1?
c#,.net,xaml,windows-phone-8.1
A simple fix would be to set IsFullWindow="True" in your media element property in XAML with this the media element would play in full screen no matter the orientation.(Though its always going to be in landscape mode). You can also set the media element property IsFullWindow as true using C#...
Add image to the radio button
This adds a picture to the background of your radio button. myRadioButton.Content = new Image() { Source = (new ImageSourceConverter()).ConvertFrom( "Images/pic.png") as ImageSource }; ...
Visual studio extension resource files
c#,wpf,visual-studio,xaml,resourcedictionary
So like I was saying, always make sure you have your build action property set correctly on assets like images you're including in the build. In your case, setting it to Resource does the trick. Glad you got your remedy, cheers!...
Datagrid inside a Custom control is not updating
One minor mistake made by you in CustonDatagrid.xaml <DataGrid ItemsSource="{Binding ElementName=CustonDataGrid, Path=Colection}" DockPanel.Dock="Top"></DataGrid> There is no element called CustonDataGrid because of which the elements were never reflected. Changed it to <DataGrid ItemsSource="{Binding Path=Colection}"></DataGrid> I also made minor change in your MainWindow.cs public partial class MainWindow : Window { public MainWindow()...
Style vs inline property setting in silverlight with a custom control
That is not the correct way to register a dependency property. public bool UseCustomTooltips { get { return (bool)GetValue(UseCustomTooltipsProperty); } set { SetValue(UseCustomTooltipsProperty, value); } } public static readonly DependencyProperty UseCustomTooltipsProperty = DependencyProperty.Register("UseCustomTooltips", typeof(bool), typeof(MyControl), new PropertyMetadata(false, new PropertyChangedCallback(MyCallbackMethod))); Use the propdp snippet, it really is a beautiful thing....
How to navigate to page when GridViewItem is clicked?
In order to handle click events in GridView you must set GridView's IsItemClickEnabled property to True and SelectionMode to None. Set a new event handler for ItemClick event and in ItemClickEventArgs parameter (e by default) you can catch the clicked event. (e.ClickedItem) This will give you what Item you clicked...
WPF | VB .Net || Textbox Placeholder
wpf,vb.net,xaml,textbox,placeholder
There's nothing wrong with a XAML only solution. <Style TargetType="TextBox" BasedOn="{StaticResource {x:Type TextBox}}" x:Key="TextBoxWithWatermarkStyle"> <Setter Property="Padding" Value="3"/> <Setter Property="Background" Value="White"/> <Setter Property="Foreground" Value="Black"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="TextBox"> <Border BorderThickness="1" CornerRadius="1" Background="{TemplateBinding Background}"> <Grid>...
WPF Custom Control VB.net
wpf,vb.net,xaml,custom-controls
This is the solution: Public Sub New() MyBase.New() End Sub Shared Sub New() DefaultStyleKeyProperty.OverrideMetadata(GetType(ecTextBox), New FrameworkPropertyMetadata(GetType(ecTextBox))) End Sub ...
How to hide app bar button in different hub sections windows phone?
If I understand right your question, you set Name property not in the right place. You should set it for AppBarButton element, not for SymbolIcon. I think your code should work after this changes. CommandBar x:Name="mybar" ClosedDisplayMode="Minimal" > <CommandBar.SecondaryCommands> <AppBarButton Label="setting" Click="AppBarButton_Click"/> </CommandBar.SecondaryCommands> <AppBarButton x:Uid="CALENDAR" x:Name="btnCalendar" Label="calendar" Click="AppBarButton_Click"> <AppBarButton.Icon> <SymbolIcon...
How to get data from combobox from datagrid in WPF?
I think you're confusing stuff. I assume you want your State items to have a string Measure property, and not a collection of them, but you want to be able to select the Measure value from a Combo with several options... If that's the case, then you should redefine your...
Get rid of Visual Studio Namespace error message
It seems to me that your main application namespace is TreeViewTestC and not MyNameSpace. Therefore, you may well need to tell the compiler that your MyNameSpace is actually in the TreeViewTestC assembly, despite you only having a single project. Try using this instead: xmlns:MyTree="clr-namespace:MyNameSpace;assembly=TreeViewTestC" ...
Gracefully handling expected BindingExpression errors
wpf,xaml,data-binding,wpf-controls
Your 'null' item should simply be an item in your collection (of the same type as the rest of the items) that has no properties set, or at least no properties that are displayed. That way, you can avoid the Binding errors all together, because your 'null' item will have...
Overlapping Items in WPF ItemsControl
c#,wpf,xaml,user-interface,datatemplate
I found an answer that will work for my situation right here: http://stackoverflow.com/a/9687758/4912801 It turns out that setting the Panel.ZIndex property wasn't working because WPF inserts a ContentPresenter element for each item in the ItemsControl. In my application, I was trying to get whatever element the mouse is hovering over...
Saving WPF Assets
If you create Assets folder directly in Visual Studio solution, then you can access those assets this way Assests/Images/MyImage.jpg without problems. Don't forget to set Build action to Content.
Table user control not displaying
System.Windows.Documents.Table cannot be hosted with the results you expect by just any container (UserControl in your case). That is why it just calls the ToString() method for displaying purposes, resulting in the string you see. Look into the remarks section of the Table class. It lists suitable parental containers for...
How to add a checkbox to the image in ListView?
As Image does not support content, you need to wrap both Image and ComboBox in some kind of container eg. Grid. // set checkbox alignment checkbox.HorizontalAlignment = HorizontalAlignment.Left; checkbox.VerticalAlignment = VerticalAlignment.Bottom; var grid = new Grid(); grid.Children.Add(image); grid.Children.Add(checkbox); ...
Change image.Source in ListView according to boolean
For those who are searching for the solution: BoolToImageConverter.cs: public class BoolToImageConverter : IValueConverter { public object Convert(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture) { return (bool)value ? "D:\\Test\\Test\\bin\\Debug\\img\\add.png" : "D:\\Test\\Test\\bin\\Debug\\img\\minus.png"; } public object ConvertBack(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture) { return false; // not needed }...
how to show some value on button from value of some variable using XAML
Bind the content property of your button to the variable containing the string you want to show - ensuring you explicitly implement INotifyPropertyChanged or use dependency property to update the value: <Button Content={Binding variable_name} /> It is important to know your data context at this point....
GridViewColumn.Width binding and double-click to autosize column
Looking at the double click handler source code, it looks like the Width property should be updated. Perhaps something is going wrong in the binding? You might want to make your binding verbose and see what prints in the output window. That issue aside, you may not get the behavior...
Filtering ObservableCollection with ICollectionView
You would need to: public class MainViewModel : ViewModelBase, IBarcodeHandler { public ICollectionView TraceItemCollectionView { get { return CollectionViewSource.GetDefaultView(TraceItemCollectionViewSource); } } public ObservableCollection<TraceDataItem> TraceItemCollectionViewSource { get; set; } } then, somewhere in the code (maybe in the constructor) add your filter: TraceItemCollectionView.Filter = o => { var item = (TraceDataItem)...
ViewModel Called on Navigation Back Prism MVVM Windows Phone 8.1 C#
c#,xaml,mvvm,windows-phone-8.1,prism
You're referring caching here. In the constructor of your ViewModel , set your NavigationCacheMode this.NavigationCacheMode = NavigationCacheMode.Required; and in OnNavigatedTo event handler , check your navigationMode and delete if you're doing something more than default initializing....
Binding property of usercontrol to data
c#,xaml,mvvm,binding,winrt-xaml
After hours of searching, I found a StackOverflow answer to a similar question. The answer was to add a PropertyChanged function to the Propertymetadata. I'm not sure yet what this actually means or why it is only needed here, but it works properly: public static readonly DependencyProperty SourceImageResourceIdProperty = DependencyProperty.Register("SourceImageResourceId",...
Enable drag/drop and reordering after long click on GridView control (XAML)
After much fuss and chasing down events, I was able to get the intended effect on pen, mouse, and touch devices. The following code is not guaranteed to be the best way to accomplish the long click drag, but it is functioning on my devices with Windows 8.1. I encourage...
Update bindings from other bindings using MVVM in WPF
Assuming you truly want to have a collapsed visibility in case of null SelectedItem only, there's really no need to use code for that. The following XAML will do the job just fine. Just give your source DataGrid a name (I've assumed Grid as name in following example) and use...
Circular progress bar in windows phone 8
c#,xaml,windows-phone-8,progress-bar
Looks like the listed properties have no getter. Make sure to add one before referencing them in the XAML.
Items inside custom panel not getting arranged properly
The solution was the easiest in the world. I need to use the NewsFeedPanel as ItemsPanel instead of a wrapPanel. Thanks Clemens for the suggestion.
Animate ScaleTransform of a Button using VisualStateManager
xaml,animation,windows-phone-8,visualstatemanager
The trick is, to define only the visual states, you are interested in. In this case, you are only interested in "pressed" and "normal", so only define those. Here is an example: <Button.Template> <ControlTemplate TargetType="Button"> <ContentPresenter x:Name="LayoutRoot" RenderTransformOrigin="0.5 0.5"> <ContentPresenter.RenderTransform> <ScaleTransform/> </ContentPresenter.RenderTransform> <ContentPresenter.Foreground> <SolidColorBrush Color="White"/> </ContentPresenter.Foreground>...
Adding table header to Listview with DataTemplate in XAML
c#,wpf,xaml,listview,windows-runtime
If you have to use ListView then this is how it works: <ListView Margin="120,30,0,120" ItemsSource="{Binding MainViewModel}" Grid.Row="1"> <ListView.View> <GridView> <GridViewColumn DisplayMemberBinding="{Binding Data, Mode=TwoWay}" Width="100" Header="Column 1" /> <GridViewColumn DisplayMemberBinding="{Binding Year, Mode=TwoWay}" Width="100" Header="Column 2" /> <GridViewColumn DisplayMemberBinding="{Binding Month, Mode=TwoWay}" Width="100" Header="Column 3" /> <GridViewColumn...
WP 8.1 ToggleButton Change Icon when Checked / UnChecked
xaml,windows-phone-8.1,togglebutton
Please change your XAML to this: <Grid> <ToggleButton x:Name="TogBtn" HorizontalAlignment="Center" VerticalAlignment="Center" Checked="ToggleButton_Checked" Unchecked="ToggleButton_Unchecked"> <SymbolIcon Symbol="Play"></SymbolIcon> </ToggleButton> </Grid> And please add this to your .cs file: private void ToggleButton_Checked(object sender, RoutedEventArgs e) { TogBtn.Content = new SymbolIcon(Symbol.Stop); } private void ToggleButton_Unchecked(object sender, RoutedEventArgs e) { TogBtn.Content = new...
How to get the device orientation changed event under Windows Phone
c#,xaml,windows-phone,windows-phone-8.1
Your best bet would be describing to Windows.Current.SizeChanged event and testing if width is more than height. There is also a sensor for this, but is is a bit problematic, take a look at http://www.jayway.com/2014/10/06/detecting-orientation-in-universal-apps-windows-phone-8-1/. .xaml <ContentDialog x:Class="App1.ContentDialog1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:App1"...
Caching Views in XAML changes appearance?
xaml,caching,windows-store-apps
Does this make sense / improve performance of loading controls? Yes, it does make sense, however there are a few things to consider with this. Probably the most important thing is memory management. You need to consider how much memory you will be using when caching your views. Picture...
How to change MahApps.Metro dialog content template width?
wpf,xaml,modal-dialog,controltemplate,mahapps.metro
Just create your own style that overrides the Template (and don't forget the DialogShownStoryboard) <Style TargetType="{x:Type Dialog:BaseMetroDialog}" x:Key="NewCustomDialogStyle" BasedOn="{StaticResource {x:Type Dialog:BaseMetroDialog}}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Dialog:BaseMetroDialog}"> <ControlTemplate.Resources> <Storyboard x:Key="DialogShownStoryboard"> <DoubleAnimation AccelerationRatio=".9" BeginTime="0:0:0"...
DataTemplate doesn't seem to be binding
wpf,xaml,datatemplate,itemssource
You're not binding the Text of the TextBlock to anything. Try something like this: <TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" VerticalAlignment="Top" Grid.Column="1" Text="{Binding DevDisplay}" /> FYI, the DataTemplate's DataContext is automatically set to the item that it is binding to....
How to map tapped event for a single object in a canvas control in XAML?
I think you should try something like this: foreach (UIElement ball in playArea.Children) { if(ball is ContentControl) ball.Tapped += ball_Tapped; } } void ball_Tapped(object sender, TappedRoutedEventArgs e) { ContentControl ball = sender as ContentControl; double top = Canvas.GetTop(ball); animateBall(ball, top, playArea.ActualHeight, "(Canvas.Top)"); } ...
How to bind a textblock visibility to another textblock text property
c#,xaml,windows-phone-8,windows-phone-8.1,winrt-xaml
Using Converters You can achieve this In xaml <TextBlock x:Name="TB" Text="Text"/> <TextBox Visibility="{Binding ElementName=TB,Path=Text,Converter={StaticResource StringToVisibilityConverter}}"/> And Corresponding converter in c# code is public class StringToVisibilityConverter: IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { return string.IsNullOrEmpty((string)value)?Visibility.Collapsed:Visibility.Visible; }...
Change default bitmap in CheckBox
Unless you need to extend CheckBox for other reasons, what you're trying to do here can be done with Attached Properties too, and it would allow you to have one single Style for all your CheckBoxes. public static class CheckBoxExtensions { public static void SetDefaultValue(CheckBox element, bool value) { element.SetValue(DefaultValueProperty,...
How to properly position elements in a stack panel?
You have to set container style: <ListView.ItemContainerStyle> <Style TargetType="ListViewItem"> <Setter Property="VerticalContentAlignment" Value="Top" /> </Style> </ListView.ItemContainerStyle> ...
Why does the VisualTreeHelper return a border for a button
If you look at the control template for the Button here you can see that it is composed almost entirely of a Border control. Since the Border is what actually took the hit, that is what is being returned. You should use a common helper function to walk up the...
How to reference and use label in c# wpf
You give names to elements in xaml by using x:Name, this will cause them to be publicly named in designer generated cs-file (it is made out of xaml) and you can access them as you did it in past in winforms. This code doesn't makes any sense: public partial class...
Track information of current song in Universal App
c#,xaml,win-universal-app,universal,windows-media-player
Within Windows Phone 8.0 it was possible to use the Microsoft.Xna.Framework.Media.MediaPlayer to get information (song, album, artist name) about the currently playing songs. WP 8.1, RT and Universal don't provide a way to read this information. It's only possible to write it using the SystemMediaTransportControls. You can vote for this...
Enumerate and apply WPF styles programmatically
c#,wpf,xaml,storyboard,styling
Finally worked it out. The code I was looking for was as simple as VisualStateManager.GoToState(HelloWorldButton, "MouseOver", true); ...
Is it possible to concactenate a DataBound value with a constant string in XAML DataBinding?
You can use a StringFormat in your binding, like so: <TextBox Text="{Binding ItemName, StringFormat={}Item: {0}}"/> That being said, it may cause some unexpected behavior when editing. For example, if the user edits only the item name (excluding the 'Item:' text), then when the TextBox loses focus, the string format will...
BooleanToVisibilityConverter works on Textblock and not on UserControl
wpf,xaml,binding,windows-phone-8.1
The problem is the use of DataContext. Your MainPage has a DataContext : DataContext="{Binding Main, Source={StaticResource Locator}}" LoadingView also has a DataContext So, when you write this code : You try to find Test2 as a field in the DataContext of the LoadingView because you're in the same View. To...
Backbutton press navigates to two page backward in Windows Phone App
Add following line into the OnNavigatedFrom method: Windows.Phone.UI.Input.HardwareButtons.BackPressed -= HardwareButtons_BackPressed; In case the OnNavifatedFrom doesn't exist in your partial class of the XAML page, create it like bellow: protected override void OnNavigatedFrom(NavigationEventArgs e) { Windows.Phone.UI.Input.HardwareButtons.BackPressed -= HardwareButtons_BackPressed; } ...
How to call StyleSelector on PropertyChanges of a row
StyleSelector doesn't listen to PropertyChange notifications. However you can use DataTrigger based on a Boolean property instead: bool _reelIdChanged; public bool ReelIdChanged { get { return _reelIdChanged; } set { _reelIdChanged = value; RaisePropertyChanged("ReelIdChanged"); } } private string _newReelId; public string NewReelId { get { return _newReelId; } set {...
RadioButtons binding on Windows Phone 8.1
c#,xaml,mvvm,radio-button,windows-phone-8.1
Assuming that PageState is an enum, this answer is what you're looking for. All of the radio buttons that you want to group together all bind to the same property of the ViewModel and all use the same ValueConverter. The value that triggers a radio button check / uncheck is...