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MainWindow.xaml.cs
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MainWindow.xaml.cs
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using DevExpress.Diagram.Core;
using DevExpress.Xpf.Diagram;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace AttachedConnectors
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void DiagramDesignerControl_AddingNewItem(object sender, DevExpress.Xpf.Diagram.DiagramAddingNewItemEventArgs e)
{
DiagramConnector connector = e.Item as DiagramConnector;
if (connector != null)
{
connector.BeginPointRestrictions = ConnectorPointRestrictions.KeepConnected;
connector.EndPointRestrictions = ConnectorPointRestrictions.KeepConnected;
e.Cancel = connector.BeginItem == null || connector.EndItem == null;
}
}
private void DiagramDesignerControl_BeforeItemsMoving(object sender, DiagramBeforeItemsMovingEventArgs e)
{
e.Cancel = e.IsCopying && ListContainsDetachedConnectors(e.Items);
}
private void DiagramDesignerControl_ItemsPasting(object sender, DiagramItemsPastingEventArgs e)
{
e.Cancel = ListContainsDetachedConnectors(e.Items.Select(i => i.Item).ToList());
}
bool ListContainsDetachedConnectors(IList<DiagramItem> items)
{
return items.OfType<DiagramConnector>().Any(c => !items.Contains(c.BeginItem) || !items.Contains(c.EndItem));
}
}
}