I have a DataGrid that contains a checkbox. I would like to delete all the rows from the DataGrid where the checkbox is checked by clicking on a delete button. The XAML for my datagrid is shown below.
<DataGrid x:Name="orders" Grid.Row="4" Background="AliceBlue" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" AutoGenerateColumns="False" >
<DataGrid.Columns>
<DataGridCheckBoxColumn Header="Select" Binding="{Binding Path=IsSelected, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}}" ></DataGridCheckBoxColumn>
<DataGridTextColumn Header="Item Name" Binding="{Binding Path=Name}" ></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
I would like to write code for click button to delete all the rows where the checkbox is checked like so.
private void btnDelete_Click(object sender, RoutedEventArgs e)
{
//Delete logic here
}
How do I achieve this? NB: I'm using EntityFramework and not ADO. the datagrid is bound to an observable collection of type Order like ObservableCollection<Order>
First make sure the DataGrid
allows multi-selection via the SelectionMode
SelectionMode="Extended"
Then on button click get the selected items from the grid based on the IsSelected
binding in the view
private void btnDelete_Click(object sender, RoutedEventArgs e) {
//get selected items
if (orders.SelectedItems != null && orders.SelectedItems.Count > 0) {
var toRemove = orders.SelectedItems.Cast<Order>().ToList();
//Delete logic here
//...remove items from EF and save
//Once confirmed remove from items source
var items = orders.ItemsSource as ObservableCollection<Order>;
if (items != null) {
foreach (var order in toRemove) {
items.Remove(order);
}
}
}
}
Write code behind like this....
public MainWindow()
{
InitializeComponent();
List<Great> p = new List<Great>();
p.Add(new Great() { Name = "Good" });
p.Add(new Great() { Name = "Bad" });
p.Add(new Great() { Name = "Ugly" });
orders.ItemsSource = p;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
List<Great> SelectedOrders = new List<Great>();
for (int i = 0; i < orders.SelectedItems.Count; i++)
{
SelectedOrders.Add((Great)orders.SelectedItems[i]);
}
var kk = orders.ItemsSource as List<Great>;
foreach (var item in SelectedOrders)
{
kk.Remove(item);
}
orders.Items.Refresh();
}
public class Great
{
public string Name { get; set; }
}
Just call the Clear()
method on the ObservableCollection<Order>
:
private void btnDelete_Click(object sender, RoutedEventArgs e)
{
var sourceCollection = orders.ItemsSource as ObservableCollection<Order>;
if (orders != null)
orders.Clear();
}
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