程序代码
代码如下 | 复制代码 |
void OnLostFocus(object sender, RoutedEventArgs e) { TextBox tb = e.Source as TextBox; tb.PreviewMouseDown += new MouseButtonEventHandler(OnPreviewMouseDown); } void OnPreviewMouseDown(object sender, MouseButtonEventArgs e) { TextBox tb = e.Source as TextBox; tb.Focus(); e.Handled = true; } void OnGotFocus(object sender, RoutedEventArgs e) { TextBox tb = e.Source as TextBox; tb.SelectAll(); tb.PreviewMouseDown -= new MouseButtonEventHandler(OnPreviewMouseDown); }
TextBox Name="searchTextBox" Background="DarkOrange" HorizontalAlignment="Stretch" MaxLength="15" TextAlignment ="Center"
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输入名称搜索</TextBox> 关键点在于鼠标按下之时
代码如下 | 复制代码 |
tb.Focus(); e.Handled = true; |
由这里引发GotFocus事件 并且设置Handled 标记阻止路由事件继续传播
在GotFocus的事件里面利用tb.SelectAll()全选
代码如下 | 复制代码 |
tb.PreviewMouseDown -= new MouseButtonEventHandler(OnPreviewMouseDown); |
所实现的功能是当第二次单击的时候,不再是全选文字,而是显示光标。
时间: 2024-09-15 13:01:25