data-binding

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;

问题 I'm working on a QML application that has a lot of property bindings: hundreds of objects are tracked and displayed in different forms like Qt3D/QCanvas. When I'm on a separate page of the application those property bindings for x/y locations and relative sizes are still happening. How can I stop them? I know I could bind the properties based on whether they're visual or not but that is a lot of unnecessary code: x: visible ? tracking.location(index).x : 0 I would have to wrap a ton of

问题 Experimenting with Blazor (Server, if that makes any difference), and I'm having difficulty getting binding to a MultiSelectList to work.... Bit of background: I'm dealing with EF Core and have a Many-to-Many relationship, let's say between people and cars. I'm currently loading a page that shows the existing details, and allowing the user to update this page. So in my Service, I load my Person entity from the DB, and this includes the details of all the cars they currently own. I also load

问题 Short Version If I update the Model object that my ViewModel wraps, what's a good way to fire property-change notifications for all the model's properties that my ViewModel exposes? Detailed Version I'm developing a WPF client following the MVVM pattern, and am attempting to handle incoming updates, from a service, to data being displayed in my Views. When the client receives an update, the update appears in the form of a DTO which I use as a Model. If this model is an update to an existing

问题 I have the following XAML: <Window x:Class="ListBoxTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:ListBoxTest" Title="MainWindow" Height="350" Width="525"> <Window.DataContext> <local:Model /> </Window.DataContext> <Grid> <Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <ListBox ItemsSource="{Binding Items}" Grid.Row="0"/>

问题 I have the following XAML: <Window x:Class="ListBoxTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:ListBoxTest" Title="MainWindow" Height="350" Width="525"> <Window.DataContext> <local:Model /> </Window.DataContext> <Grid> <Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <ListBox ItemsSource="{Binding Items}" Grid.Row="0"/>

问题 I have some lines of code written in onBindViewHolder in lang (java) .. I'm trying to write the exact code in kotlin in Binding Adapter , but i'm not able to write that EarthQuakeAdapter( JAVA) .. I tried but i was not able to write the same code to get magnitudeCircle , PrimaryLocation and LocationOffSet from onBindViewHolder(JAVA lang) method to Binding Adapter in kotlin which i posted below public class EarthquakeAdapter extends RecyclerView.Adapter<EarthquakeAdapter.MyViewHolder> {

问题 I have some lines of code written in onBindViewHolder in lang (java) .. I'm trying to write the exact code in kotlin in Binding Adapter , but i'm not able to write that EarthQuakeAdapter( JAVA) .. I tried but i was not able to write the same code to get magnitudeCircle , PrimaryLocation and LocationOffSet from onBindViewHolder(JAVA lang) method to Binding Adapter in kotlin which i posted below public class EarthquakeAdapter extends RecyclerView.Adapter<EarthquakeAdapter.MyViewHolder> {

问题 I am having an issue with binding to a parent MainWindow property, MainContentVisibility. I have the following code: MainWindow.xaml <Window x:Class="CallTracker.WPF.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:v="clr-namespace:MyProgram.WPF.Views" DataContext="{Binding MainPageViewModel, Source={StaticResource Locator}}"> <StackPanel> <v:CompanyInfoUserControl Width="800" Visibility="{Binding MainContentVisibility, RelativeSource={RelativeSource Mode

问题 I have dynamically created popups that get created at run-time in the C# code behind that is filled with content from the xaml and having difficulty on how to bind them in the code behind. Right now when it is created, it loops through the items in the xaml and creates an associated checkbox for each one: ListView listView = new ListView(); //Create ListViewItem for each answer foreach (Answer ans in Questions.DataUsedQuestion.AnswerOptions) { ListViewItem item = new ListViewItem();