diff --git a/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs b/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
index 6f4fbaf..ea0c975 100644
--- a/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
@@ -63,7 +63,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
                         Point point = sourceDataItem.MiddlePosition;
 
-                        partialConnection = new ConnectionViewModel(_viewModel, sourceDataItem, new PartCreatedConnectorInfo(point.X, point.Y), DrawMode, RouterMode);
+                        partialConnection = new ConnectionViewModel(_viewModel, sourceDataItem, new PartCreatedConnectorInfo(point.X, point.Y), LineDrawMode, RouterMode);
 
                         _viewModel.Add(partialConnection);
                         partialConnection.ZIndex = -1;
@@ -106,6 +106,22 @@ namespace AIStudio.Wpf.DiagramDesigner
                 }
             }
         }
+
+        private DrawMode LineDrawMode
+        {
+            get
+            {
+                if (_viewModel.DrawModeViewModel != null)
+                {
+                    return _viewModel.DrawModeViewModel.LineDrawMode;
+                }
+                else
+                {
+                    return _service.DrawModeViewModel.LineDrawMode;
+                }
+            }
+        }
+
         private RouterMode RouterMode
         {
             get
@@ -496,7 +512,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                     ConnectorInfoBase sinkDataItem = SinkConnector.Info;
 
                     _viewModel.Remove(partialConnection);
-                    _viewModel.AddItemCommand.Execute(new ConnectionViewModel(_viewModel, sourceDataItem, sinkDataItem, DrawMode, RouterMode));
+                    _viewModel.AddItemCommand.Execute(new ConnectionViewModel(_viewModel, sourceDataItem, sinkDataItem, LineDrawMode, RouterMode));
                 }
                 else if (partialConnection.IsFullConnection)//自动连接模式
                 {
@@ -508,7 +524,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                     ConnectorInfoBase sinkDataItem = new PartCreatedConnectorInfo(currentPoint.X, currentPoint.Y);
 
                     _viewModel.Remove(partialConnection);
-                    _viewModel.AddItemCommand.Execute(new ConnectionViewModel(_viewModel, sourceDataItem, sinkDataItem, DrawMode, RouterMode));
+                    _viewModel.AddItemCommand.Execute(new ConnectionViewModel(_viewModel, sourceDataItem, sinkDataItem, LineDrawMode, RouterMode));
                 }
                 else
                 {