How to avoid WPF TreeView SelectedItemChanged being called twice Very often, we need to execute some code in SelectedItemChanged depending on the selected TreeViewItem. But SelectedItemChanged is called twice. This is due to stealing focus from the m
1.TreeView选择事件执行两次 Very often, we need to execute some code in SelectedItemChanged depending on the selected TreeViewItem. ButSelectedItemChanged is called twice. This is due to stealing focus from the main window, which is screwing something up. Wha
UIElement在WPF4下添加了很多支持多点触摸的事件,通过它们可以在硬件支持的情况下处理多点触摸,以下通过代码来说明通过处理这些事件,我们可以做些什么: 一.触摸相关的多种事件,跟鼠标事件是对应的,通过这些事件可以获取到多个触摸的鼠标点,并进行相应的处理 public static readonly RoutedEvent TouchDownEvent; public static readonly RoutedEvent TouchEnterEvent; public static re
一.首先需要封装一下文本框的属性,并且在实体类中添加一个实体类的属性改变函数 public class User : INotifyPropertyChanged //INotifyPropertyChanged接口是 WPF/Silverlight 开发中非常重要的接口, 它构成了 ViewModel 的基础, 数据绑定基本上都需要这个接口. { private string _Wenben; public string Wenben { get { return _Wenben; } set