1 void OnLostFocus(object sender, RoutedEventArgs e) 2 { 3 TextBox tb = e.Source as TextBox; 4 tb.PreviewMouseDown += new MouseButtonEventHandler(OnPreviewMouseDown); 5 } 6 7 void OnPreviewMouseDown(object sender, MouseButtonEventArgs e) 8 { 9 TextBox tb = e.Source as TextBox; 10 tb.Focus(); 11 e.Handled = true; 12 } 13 14 void OnGotFocus(object sender, RoutedEventArgs e) 15 { 16 TextBox tb = e.Source as TextBox; 17 tb.SelectAll(); 18 tb.PreviewMouseDown -= new MouseButtonEventHandler(OnPreviewMouseDown); 19 } <TextBox Name="searchTextBox" Background="DarkOrange" HorizontalAlignment="Stretch" MaxLength="15" TextAlignment ="Center" TextChanged="OnSearchTextChange" GotFocus="OnGotFocus" PreviewMouseDown="OnPreviewMouseDown" LostFocus="OnLostFocus"> 输入名称搜索 关键点在于鼠标按下之时 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 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。 本文来自罗天大兵的博客,原文地址:http://www.cnblogs.com/shuilan/archive/2012/06/27/2566258.html |
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