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="...
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...
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. ...
WindowStartupLocation="CenterScreen" Title="MainWindow" Height="450" Width="800"> <Window.DataContext> <local:ViewModel/> </Window.DataContext> <Grid> <syncfusion:SfDataGrid x:Name="dataGrid" ItemsSource="{Binding Orders}" AutoGenerateColumns="True"/> </Grid> </Window> CopyNot...
You can override this behavior in the binding and set a specific binding source object value. 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, ...
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" ...
WPF DataGrid是一种用于显示和编辑数据的强大控件。要确定WPF DataGrid是否处于编辑模式,可以通过以下方法: 1. 检查DataGrid的SelectedCellsChanged事...
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...
namespaceWpfTutorialSamples.DataBinding{publicpartialclassDataContextSample:Window{publicDataContextSample(){InitializeComponent();this.DataContext=this;}privatevoidbtnUpdateSource_Click(objectsender,RoutedEventArgse){BindingExpressionbinding=txtWindowTitle.GetBindingExpression(TextBox.TextProperty);binding.UpdateSource(...
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...