binding

问题 After watching Kyle Simpson's Advanced JavaScript course on Pluralsight, I created a simple code snippet to try out this binding. I usually work in SublimeText editor and have node build engine configured in it and occasionally I run the same code in browser as well. I have noticed one difference in the program output when execute code in Node and in Browser [Chrome]. Following is the code snippet to try out this binding. function foo() { console.log(this.bar); } var bar = "bar1"; var obj =

问题 I have a Button and use binding to a string ( Name property from class Person ) I have the following code: person1.name = "Name1"; Thread.Sleep(1000); person1.name = "Name2"; With Binding I only see: Name2 after runtime. I want to see Name1 then after 1 second see Name2 ! How can I realize this? Whats the best method for this? I also want to use the MVVM - Pattern if this is important. 回答1: Use ThreadPool like this: person1.name = "Name1"; ThreadPool.QueueUserWorkItem(_ => { Thread.Sleep(1000

问题 After trying several options of having a decent mechanism which allows to use ObservableCollections with the option to dynmically having them updated using an Edit window and binding, without having the global collections updated while making changes on the bound controls, so far the best solution seems to be : Clone the entity, detach the old one, attach the new one, mark it updated and save. But oops, the following exception follows: The relationship manager supplied by the object

问题 I have the following structure. public class ToolSettings { public string Extension { get; set; } public ObservableCollection<Tool> Tools { get; set; } } public class Tool { public string Name { get; set; } public string Command { get set; } } // Within app code public ObservableCollection<ToolSettings> settings { get; set; } I'd like to grab the Tools collection from the settings collection where the Extension equals a certain string. Below is my LINQ code, but I'm only getting one item in

问题 I am binding my entities to an edit form in WPF. Within a DataTemplate, I want to be able to set the background color of the root container within a DataTemplate to show it has been changed and these changes have not yet been submitted to the database. Here's a very simple sample that demonstrates what I'm talking about (forgive errors): <Page ...> <Page.DataContext> <vm:MyPageViewModel /> <!-- Holds reference to the DataContext --> </Page.DataContext> <ItemsControl ItemsSource = {Binding

问题 I've seen other questions that deal with this, but never any explicit code describing the fix. I can't get a button inside of my ItemTemplate to bind to ANY command anywhere. Very frustrating. I am a complete MVVM newbie, btw. Here's my Window XAML. <Window x:Class="RET.CMS.Printing.App.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:RET.CMS.Printing.App.ViewModel" Height="350"

问题 For example, $( "#dataTable tbody tr" ).on( "click", function() { alert( $( this ).text() ); }); $( "#dataTable tbody" ).on( "click", "tr", function() { alert( $( this ).text() ); }); .on() binds "tr" with click event handler. The first one select children and register click event handler directly. The second one select parent "tbody", and select children "tr" as an argument. Are they both dynamic binding? Do they have the same effect? What is the difference between these two? 回答1: No, only

问题 I have this xaml <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:l="clr-namespace:My.Windows" > <ObjectDataProvider x:Key="TitledWindow_Test" MethodName="Test" ObjectInstance={x:Type l:TitledWindow}"> <ControlTemplate x:Key="TitledWindowControlTemplateKey" x:Name="PART_ControlTemplate" TargetType="{x:Type l:TitledWindow}" <Rectangle> <Rectangle.Style> <EventSetter Event="Mouse.MouseEnter"

问题 I have this xaml <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:l="clr-namespace:My.Windows" > <ObjectDataProvider x:Key="TitledWindow_Test" MethodName="Test" ObjectInstance={x:Type l:TitledWindow}"> <ControlTemplate x:Key="TitledWindowControlTemplateKey" x:Name="PART_ControlTemplate" TargetType="{x:Type l:TitledWindow}" <Rectangle> <Rectangle.Style> <EventSetter Event="Mouse.MouseEnter"

问题 My target is to bind the Content -Property of the Label to the Tag -Property of the Elements the Style is applied to . But my solution doesn't seem to work: My style: <Style TargetType="TextBox" x:Key="HintedTextBox"> <Style.Resources> <VisualBrush AlignmentX="Left" AlignmentY="Center" Stretch="None" x:Key="HintedTextBox_Hint"> <VisualBrush.Visual> <Label Content="{Binding RelativeSource={RelativeSource Self}, Path=Tag}" Foreground="LightGray" /> </VisualBrush.Visual> </VisualBrush> </Style