如何在wpf datagrid中删除所选行（使用复选框）

我的WPF DataGrid是：

另外Dynamicaly我正在将数据填充到datgrid。在xaml.cs文件中，我编写了下面给出的代码，用于从数据网格中删除所选行但是它在行中抛出错误

 DataGridRow item =(DataGridRow) datagrid1.ItemContainerGenerator.ContainerFromItem(datagrid1.Items[j]); 

所以请查看下面给出的代码，我为此做了同样的代码。

  private void Button_Click_1(object sender, RoutedEventArgs e) { for (int j = 0; j < datagrid1.Items.Count; j++) { DataGridRow item =(DataGridRow) datagrid1.ItemContainerGenerator.ContainerFromItem(datagrid1.Items[j]); CheckBox ckb = (CheckBox)GetVisualChild(item); if (ckb.IsChecked.Value) { DataRowView drv = (DataRowView)datagrid1.Items[j]; //delete the row- updating to the database } } } static T GetVisualChild(Visual parent) where T : Visual { T child = default(T); int numVisuals = VisualTreeHelper.GetChildrenCount(parent); for (int i = 0; i < numVisuals; i++) { Visual v = (Visual)VisualTreeHelper.GetChild(parent, i); child = v as T; if (child == null) { child = GetVisualChild(v); } if (child != null) { break; } } return child; } 

如果我错了，请告诉我。

Answer 1

我就是这样做的。 实现inheritanceINotifyPropertyChanged的类的ObservableCollection。 如果我们想要更新集合中的项目，将使用INotifyPropertyChanged。

首先是GridView的xaml

我们的物品类

 public class MyClass : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; private string firstName { get; set; } private string lastName { get; set; } public string FirstName { get { return firstName; } set { firstName = value; PropertyChangedEvent("FirstName"); } } public string LastName { get { return lastName; } set { lastName = value; PropertyChangedEvent("LastName"); } } private void PropertyChangedEvent(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } } 

接下来是WPF窗口

 public ObservableCollection gridData { get; set; } public MainWindow() { InitializeComponent(); gridData = new ObservableCollection(); gvMain.ItemsSource = gridData; } 

测试添加，更改，删除集合中的项目

 private void btnAdd_Click(object sender, RoutedEventArgs e) { gridData.Add(new MyClass() { FirstName = "John", LastName = "Smith" }); } private void btnChange_Click(object sender, RoutedEventArgs e) { gridData[0].FirstName = "Meow Mix"; } private void btnDelete_Click(object sender, RoutedEventArgs e) { //using List to use .ForEach less code to write and looks cleaner to me List remove = gridData.Where(x => x.LastName.Equals("Smith")).ToList(); remove.ForEach(x => gridData.Remove(x)); } 

您要进行的任何更改都将使用gridData完成。