它指向原始数据,我们传递给 DataContext 的对象可以传递给所有的子控件。意思即使如果为 Grid 定义了 DataContext ,然后 Grid 中的所有元素都将得到同样的 DataContext 。 <GridDataContext="{StaticResource dtItem}"> <TextBoxText="{Binding MyProperty}"/> </Grid> 上面的代码中我为 Grid 定义了一个 DataContext...
DateContext并没有默认源(刚开始的时候是NULL),但是它贯穿整个空间层次结构,你可以为窗口设置一个DataContext,然后在任意的子控件里面使用它。让我们用代码来举例说明: Window x:Class="WpfTutorialSamples.DataBinding.DataContextSample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="...
usingSystem;usingSystem.Windows;namespaceWpfTutorialSamples.DataBinding{publicpartialclassDataContextSample:Window{publicDataContextSample(){InitializeComponent();this.DataContext=this;}}} 本示例的代码隐藏仅添加了一行有趣的代码:在标准的 InitalizeComponent() 调用之后,我们将“this”引用分配给 DataContext,这基本上...
the TextBox inside the grid can refer to the property MyPropertyas the dtItem object will be automatically inherited to all its child elements. While using Binding, DataContextis the most important part which you must use. ...
namespaceWpfTutorialSamples.DataBinding{publicpartialclassDataContextSample:Window{publicDataContextSample(){InitializeComponent();this.DataContext=this;}privatevoidbtnUpdateSource_Click(objectsender,RoutedEventArgse){BindingExpressionbinding=txtWindowTitle.GetBindingExpression(TextBox.TextProperty);binding.UpdateSource(...
DateContext并没有默认源(刚开始的时候是NULL),但是它贯穿整个空间层次结构,你可以为窗口设置一个DataContext,然后在任意的子控件里面使用它。让我们用代码来举例说明: <Window x:Class="WpfTutorialSamples.DataBinding.DataContextSample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" ...
If the DataContext property for the object hosting the binding isn't set, the parent element's DataContext property is checked, and so on, up until the root of the XAML object tree. In short, the data context used to resolve binding is inherited from the parent unless explicitly set on ...
private void OnStartup(object sender, StartupEventArgs e) { // Create the ViewModel and expose it using the View's DataContext Views.NewProductView newProductView = new Views.NewProductView(); NewProducts.Models.Product newProduct = new Models.Product(); newProductView.DataContext = new ViewModel...
this.DataContext = data; } } Open ExpenseItHome.xaml.vb or ExpenseItHome.xaml.cs. Change the Click event handler to call the new constructor passing the expense report data of the selected person. C# Kopiera private void Button_Click(object sender, RoutedEven...
1.WPF中，最重要的就是数据绑定（data binding）。通常，你有一些数据集合，你想要显示给用户，你就可以将数据绑定到XAML 2.WPF有两部分，XAML部分是描述你的GUI和特效，code-behind部分的.cs代码用来联系XAML 3.最优雅同时也可能是最大限度地复用你的代码的方式就是使用‘MVVM’模式：Model, View, ViewModel。