Unhandled Exception

dtarb[CodePlex]
Version: 1.5.10.1
Description: I was attempting to select a feature to use in search. The feature being selected was created from the buffer tool, but is defective because it has no records in the dbf file of the shapefile. The root cause of this problem is the buffer tool
not adding records to the dbf file.
Error: System.IndexOutOfRangeException: There is no row at position 0.
at System.Data.RBTree1.GetNodeByIndex(Int32 userIndex)
at DotSpatial.Data.PolygonShapefile.GetFeature(Int32 index)
at DotSpatial.Symbology.IndexSelection.ToFeatureList()
at Search3.SearchPlugin.Map_SelectionChanged(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at DotSpatial.Controls.Map.OnSelectionChanged()
at DotSpatial.Controls.Map.MapFrame_SelectionChanged(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at DotSpatial.Symbology.Layer.OnSelectionChanged()
at DotSpatial.Symbology.Group.collection_SelectionChanged(Object sender, EventArgs e)

at DotSpatial.Symbology.LayerEventList1.OnSelectionChanged()
at DotSpatial.Symbology.LayerEventList`1.SelectableSelectionChanged(Object sender, EventArgs e)

at DotSpatial.Symbology.Layer.OnSelectionChanged()
at DotSpatial.Symbology.FeatureLayer.SelectedFeaturesChanged(Object sender, EventArgs e)

at DotSpatial.Symbology.Changeable.OnChanged()
at DotSpatial.Symbology.Changeable.ResumeChanges()
at DotSpatial.Symbology.IndexSelection.AddRegion(IEnvelope region, IEnvelopeamp affectedArea)

at DotSpatial.Symbology.FeatureLayer.Select(IEnvelope tolerant, IEnvelope strict, SelectionMode selectionMode, IEnvelopeamp affectedArea)

at DotSpatial.Symbology.Group.Select(IEnvelope tolerant, IEnvelope strict, SelectionMode mode, IEnvelopeamp affectedArea)

at DotSpatial.Controls.Map.Select(IEnvelope tolerant, IEnvelope strict, SelectionMode mode, IEnvelopeamp affectedArea)

at DotSpatial.Controls.MapFunctionSelect.HandleSelection(IEnvelope tolerant, IEnvelope strict)

at DotSpatial.Controls.MapFunctionSelect.OnMouseUp(GeoMouseArgs e)
at DotSpatial.Controls.MapFunction.DoMouseUp(GeoMouseArgs e)
at DotSpatial.Controls.Map.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Messageamp m, MouseButtons button, Int32 clicks)

at System.Windows.Forms.Control.WndProc(Messageamp m)
at System.Windows.Forms.ScrollableControl.WndProc(Messageamp m)
at System.Windows.Forms.UserControl.WndProc(Messageamp m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Messageamp m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Messageamp m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Start by tracing the buffer tool output and the selection path through PolygonShapefile.GetFeature, IndexSelection.ToFeatureList, and SearchPlugin.Map_SelectionChanged. Reproduce a buffer feature with no DBF records and verify that selecting it no longer raises IndexOutOfRangeException and that the DBF contains the required records.

Written by the indexing model from the issue text.