WPF遍历当前容器中某种控件的方法

原文:WPF遍历当前容器中某种控件的方法

WPF遍历当前容器中某种控件的方法

- WPF遍历当前容器中某种控件的方法
  - 1.目的：
  - 2.实现思路：

1.目的：

在设计界面的时候遇到了这样一个问题：一个窗口中有六个按钮，我希望点击某一个按钮的时候，该按钮能够高亮显示，即：更换该按钮的背景图片，点击第二个的时候，第二个高亮显示，其他按钮还是显示为普通按钮颜色，如图：
这里写图片描述

2.实现思路：

2.1 在每一次点击的时候，遍历当前容器中所有Button，但是我们这里只需要下面六个，然后根据按钮的名称，来依次给按钮背景图片赋予相应的路径，即还原到普通普片的路径；在给点击的按钮背景图片赋予高亮图片的路径。
2.2 还原到普通普片的路径

//还原到普通普片的路径public static void BackToUsedPicture(UIElement uIElement){//遍历当前容器中所有ButtonList<Button> btnList=FindChirldHelper.FindVisualChild<Button>(uIElement);foreach (var item in btnList){Image img = new Image();if (item.Name== "Weather_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/weatherBUTTON.jpg", UriKind.Relative));                 }else if (item.Name == "Temperature_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/temperatureBUTTON.jpg", UriKind.Relative));}else if (item.Name == "Vibration_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/virbrationBUTTON.jpg", UriKind.Relative));}else if (item.Name == "Stress_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/stressBUTTON.jpg", UriKind.Relative));}else if (item.Name == "Deformation_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/DeformationBUTTON.jpg", UriKind.Relative));}else if (item.Name == "Pedestria_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/peopleBUTTON.jpg", UriKind.Relative));}item.Content = img;}                                                }

2.3 寻找当前容器中某种控件的方法：

public static class FindChirldHelper{public static List<T> FindVisualChild<T>(DependencyObject obj) where T : DependencyObject{try{List<T> TList = new List<T> { };for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++){DependencyObject child = VisualTreeHelper.GetChild(obj, i);if (child != null && child is T){TList.Add((T)child);List<T> childOfChildren = FindVisualChild<T>(child);if (childOfChildren != null){TList.AddRange(childOfChildren);}}else{List<T> childOfChildren = FindVisualChild<T>(child);if (childOfChildren != null){TList.AddRange(childOfChildren);}}}return TList;}catch (Exception ee){MessageBox.Show(ee.Message);return null;}}}

3.3 上端使用：

 private void Weather_btn_Click(object sender, RoutedEventArgs e){            ChangeButtonToLight((Button)sender);}public void ChangeButtonToLight(Button button){ChangeButtonImage.BackToUsedPicture(this);Image img = new Image();if (button.Name == "Weather_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/weatherBUTTONLight.png", UriKind.Relative));}else if (button.Name == "Temperature_btn"){img.Source = new BitmapImage(new Uri("../../images/MonitorData/temperatureBUTTONLight.png", UriKind.Relative));}else if (button.Name == "Vibration_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/virbrationBUTTON.jpg", UriKind.Relative));}else if (button.Name == "Stress_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/stressBUTTON.jpg", UriKind.Relative));}else if (button.Name == "Deformation_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/DeformationBUTTON.jpg", UriKind.Relative));}else if (button.Name == "Pedestria_btn"){img.Source = new BitmapImage(new Uri("../../Images/MonitorData/peopleBUTTON.jpg", UriKind.Relative));}button.Content = img;}