Hi there,

I've found a problem when you apply a zoom factor and try to do a multiple selection with drag selection (not using Ctrl+LeftClick), this is the exception is thrown:

System.IndexOutOfRangeException occurred
Message="Index was outside the bounds of the array."
Source="MindFusion.Diagramming.Wpf"
StackTrace:
at MindFusion.Utilities.ApproxBezier(Point[] points, Int32 startIdx, Int32 quality)
at MindFusion.Diagramming.Wpf.DiagramLink.x506928df783c0c72(Int32 x949108ddd7122fd3)
at MindFusion.Diagramming.Wpf.DiagramLink.xa170bf38e993d468(Rect x26545669838eb36e)
at MindFusion.Diagramming.Wpf.Diagram.x98d300fb770bf5ec(Rect x26545669838eb36e, Boolean x201ab38fe5644146)
at MindFusion.Diagramming.Wpf.Selection.AllowCreate(Point current, InteractionState ist)
at MindFusion.Diagramming.Wpf.InteractionState.ValidateAndSetCursor(Point point, Diagram diagram)
at MindFusion.Diagramming.Wpf.Diagram.OnPreviewMouseMove(MouseEventArgs e)
at System.Windows.UIElement.OnPreviewMouseMoveThunk(Object sender, MouseEventArgs e)
at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNat
iveMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.RunDialog(Form form)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at System.Windows.Forms.Form.ShowDialog()
at DK.Client.OSPDbDiagramming.ShowDialog(I_UserConf user, DataRow drow, IEnumerable`1 tables) in C:\Users\auser\Documents\DK\Client\DkCore\PageClasses.cs:line 739
InnerException:

When I'm loading the data from the XML, I've added before link.UpdateControlPoints:

link.SegmentCount = (short)link.ControlPoints.Count;

And seems like correct the problem, but... is there any reason for have to do that explicity?

Cheers.

Humm... I ran the othogonalrouter and save the layout in a XML (with a custom method), and after when I open the saved diagram, the app creates a new diagram with that XML. The XML contains all the information, including links and their control points.

If I load the diagram from the XML and try to zoom and select dragging... the error happens. If I load the diagram, apply the layout wityh orthogonalrouter, zoom and select dragging.. the error doesn't happen. So seems like the orthogonalrouter fix the problem, but when I load the diagram again, if I try to do the multiselect dragging in a zoommed area... the error happen.

With ControlPoints.Count -1 the error happens again (I'm not using beizer links).

Cheers.

The links are saved in this way:

XElement linksXml = new XElement( "Links",
from l in DatabaseDiagram.Links.OfType<DiagramLink>()
select new XElement( "Link",
new XAttribute( "FkColumn", ((DataDiagramRelation)l.Tag).FkColumn ),
new XAttribute( "FromTableName", ((DataTable)l.Origin.Tag).TableName ),
new XAttribute( "ToTableName", ((DataTable)l.Destination.Tag).TableName),
new XAttribute( "LinkStyle", l.Style.ToString() ),
new XAttribute( "LinkHeader", l.HeadShape.ToString() ),
new XElement( "ControlPoints",
new XAttribute( "SegmentCount", l.SegmentCount ),
from p in l.ControlPoints.OfType<Point>()
select new XElement( "Point",
new XAttribute( "X", p.X ),
new XAttribute( "Y", p.Y ) ) )
) );



The links are recreated in this way:

foreach ( XElement xlink in diagram.Elements( "Links" ).Descendants( "Link" ) )
{
String sfrom =(String)xlink.Attribute("FromTableName");
String sto=(String)xlink.Attribute("ToTableName");
String sColumn = (String)xlink.Attribute( "FkColumn" );

TableNode from = GetTableNodeFromTableName(sfrom);
TableNode to = GetTableNodeFromTableName(sto);
DataDiagramRelation rel = _relations.Where( r => r.TableFrom == sfrom && r.TableTo == sto && r.FkColumn == sColumn ).SingleOrDefault();

if ( from != null && to != null && rel !=null )
{
DiagramLink link = DatabaseDiagram.Factory.CreateDiagramLink(from,to);
link.Font = _linkFont;
link.Tag = rel;
link.TextBrush = _linkTextBrush;
link.ToolTip = rel.FkColumn;
link.Text = rel.FkColumn;
Object style = Enum.Parse( typeof( LinkStyle ), xlink.Attribute( "LinkStyle" ).Value );
link.Style = style != null ? (LinkStyle)style : LinkStyle.Polyline;

Object header = Enum.Parse( typeof( ArrowHead ), xlink.Attribute( "LinkHeader" ).Value );
link.HeadShape = header != null ? (ArrowHead)header : ArrowHead.None;

link.AutoRoute = true;

link.SegmentCount = Int16.Parse( xlink.Element( "ControlPoints" ).Attribute( "SegmentCount" ).Value );

link.ControlPoints.Clear();
foreach ( XElement controlPoint in xlink.Element( "ControlPoints" ).Descendants( "Point" ) )
link.ControlPoints.Add( new Point( Double.Parse( controlPoint.Attribute( "X" ).Value ),
Double.Parse( controlPoint.Attribute( "Y" ).Value ) ) );
link.SegmentCount = (short)(link.ControlPoints.Count);
link.UpdateFromPoints();
}
}

thanks.