diff --git a/AIStudio.Wpf.ADiagram/Models/DiagramItem.cs b/AIStudio.Wpf.ADiagram/Models/DiagramItem.cs
index 43500a8..9652488 100644
--- a/AIStudio.Wpf.ADiagram/Models/DiagramItem.cs
+++ b/AIStudio.Wpf.ADiagram/Models/DiagramItem.cs
@@ -13,6 +13,10 @@ using AIStudio.Wpf.BaseDiagram.Extensions.Models;
 using Newtonsoft.Json;
 using AIStudio.Wpf.Flowchart.Models;
 using AIStudio.Wpf.Flowchart.ViewModels;
+using AIStudio.Wpf.SFC.Models;
+using AIStudio.Wpf.SFC.ViewModels;
+using System.Windows;
+using System.Windows.Media;
 
 namespace AIStudio.Wpf.ADiagram.Models
 {
@@ -20,7 +24,7 @@ namespace AIStudio.Wpf.ADiagram.Models
     public class DiagramItem
     {
         public DiagramItem()
-        {            
+        {
             this.ConnectionIds = new List<Guid>();
             this.Connections = new List<ConnectionItem>();
         }
@@ -31,6 +35,75 @@ namespace AIStudio.Wpf.ADiagram.Models
         [XmlAttribute]
         public DiagramType DiagramType { get; set; }
 
+        [XmlAttribute]
+        public bool ShowGrid { get; set; }
+
+        [XmlIgnore]
+        public Size GridCellSize { get; set; }
+
+        [JsonIgnore]
+        [XmlAttribute("GridCellSize")]
+        public string XmlGridCellSize
+        {
+            get
+            {
+                return SerializeHelper.SerializeSize(GridCellSize);
+            }
+            set
+            {
+                GridCellSize = SerializeHelper.DeserializeSize(value);
+            }
+        }
+
+        [XmlAttribute]
+        public CellHorizontalAlignment CellHorizontalAlignment { get; set; }
+
+        [XmlAttribute]
+        public CellVerticalAlignment CellVerticalAlignment { get; set; }
+
+        [XmlAttribute]
+        public PageSizeOrientation PageSizeOrientation { get; set; }
+
+        [XmlIgnore]
+        public Size PageSize { get; set; }
+
+        [JsonIgnore]
+        [XmlAttribute("PageSize")]
+        public string XmlPageSize
+        {
+            get
+            {
+                return SerializeHelper.SerializeSize(PageSize);
+            }
+            set
+            {
+                PageSize = SerializeHelper.DeserializeSize(value);
+            }
+        }
+
+        [XmlAttribute]
+        public PageSizeType PageSizeType { get; set; }
+
+        [XmlAttribute]
+        public double GridMargin { get; set; }
+
+        [XmlIgnore]
+        public Color GridColor { get; set; }
+
+        [JsonIgnore]
+        [XmlAttribute("GridColor")]
+        public string XmlGridColor
+        {
+            get
+            {
+                return SerializeHelper.SerializeColor(GridColor);
+            }
+            set
+            {
+                GridColor = SerializeHelper.DeserializeColor(value);
+            }
+        }
+
         [XmlArray]
         public List<DesignerItemBase> DesignerItems { get; set; } = new List<DesignerItemBase>();
 
@@ -58,21 +131,31 @@ namespace AIStudio.Wpf.ADiagram.Models
         [XmlArray]
         public List<FlowNodeDesignerItem> FlowNodeDesignerItems { get; set; } = new List<FlowNodeDesignerItem>();
 
+        [XmlArray]
+        public List<SFCNodeDesignerItem> SFCNodeDesignerItems { get; set; } = new List<SFCNodeDesignerItem>();
+
         [JsonIgnore]
         [XmlIgnore]
-        public List<DesignerItemBase> AllDesignerItems { get { return 
-                            DesignerItems.OfType<DesignerItemBase>()
-                     .Union(TextDesignerItems.OfType<DesignerItemBase>())
-                     .Union(LogicalGateItems.OfType<DesignerItemBase>())
-                     .Union(MediaDesignerItems.OfType<DesignerItemBase>())
-                     .Union(ImageDesignerItems.OfType<DesignerItemBase>())
-                     .Union(PathDesignerItems.OfType<DesignerItemBase>())
-                     .Union(PersistDesignerItems.OfType<DesignerItemBase>())
-                     .Union(SettingsDesignerItems.OfType<DesignerItemBase>())
-                     .Union(FlowNodeDesignerItems.OfType<FlowNodeDesignerItem>())
-                     .ToList(); } }
+        public List<DesignerItemBase> AllDesignerItems
+        {
+            get
+            {
+                return
+DesignerItems.OfType<DesignerItemBase>()
+.Union(TextDesignerItems.OfType<DesignerItemBase>())
+.Union(LogicalGateItems.OfType<DesignerItemBase>())
+.Union(MediaDesignerItems.OfType<DesignerItemBase>())
+.Union(ImageDesignerItems.OfType<DesignerItemBase>())
+.Union(PathDesignerItems.OfType<DesignerItemBase>())
+.Union(PersistDesignerItems.OfType<DesignerItemBase>())
+.Union(SettingsDesignerItems.OfType<DesignerItemBase>())
+.Union(FlowNodeDesignerItems.OfType<DesignerItemBase>())
+.Union(SFCNodeDesignerItems.OfType<DesignerItemBase>())
+.ToList();
+            }
+        }
 
-        [XmlArray] 
+        [XmlArray]
         public List<Guid> ConnectionIds { get; set; }
 
         [XmlArray]
@@ -113,11 +196,15 @@ namespace AIStudio.Wpf.ADiagram.Models
                 else if (item is LogicalGateItemViewModelBase)
                 {
                     LogicalGateItems.Add(new LogicalGateDesignerItemBase(item as LogicalGateItemViewModelBase));
-                }              
+                }
                 else if (item is FlowNode)
                 {
                     FlowNodeDesignerItems.Add(new FlowNodeDesignerItem(item as FlowNode));
                 }
+                else if (item is SFCNode)
+                {
+                    SFCNodeDesignerItems.Add(new SFCNodeDesignerItem(item as SFCNode));
+                }
                 else if (item is BarcodeDesignerItemViewModel)
                 {
                     DesignerItems.Add(new DesignerItemBase(item, (item as BarcodeDesignerItemViewModel).Format.ToString()));
@@ -133,7 +220,7 @@ namespace AIStudio.Wpf.ADiagram.Models
         {
             if (item is PersistDesignerItemViewModel)
             {
-               return new PersistDesignerItem(item as PersistDesignerItemViewModel);
+                return new PersistDesignerItem(item as PersistDesignerItemViewModel);
             }
             else if (item is SettingsDesignerItemViewModel)
             {
@@ -167,6 +254,10 @@ namespace AIStudio.Wpf.ADiagram.Models
             {
                 return new FlowNodeDesignerItem(item as FlowNode);
             }
+            else if (item is SFCNode)
+            {
+                return new SFCNodeDesignerItem(item as SFCNode);
+            }
             else
             {
                 return new DesignerItemBase(item as DesignerItemViewModelBase);
@@ -191,6 +282,8 @@ namespace AIStudio.Wpf.ADiagram.Models
                 return typeof(LogicalGateDesignerItemBase);
             if (vmType is FlowNode)
                 return typeof(FlowNodeDesignerItem);
+            if (vmType is SFCNode)
+                return typeof(SFCNodeDesignerItem);
             throw new InvalidOperationException(string.Format("Unknown diagram type. Currently only {0} and {1} are supported",
                 typeof(PersistDesignerItem).AssemblyQualifiedName,
                 typeof(SettingsDesignerItemViewModel).AssemblyQualifiedName
diff --git a/AIStudio.Wpf.ADiagram/ViewModels/DiagramsViewModel.cs b/AIStudio.Wpf.ADiagram/ViewModels/DiagramsViewModel.cs
index 38bbfd4..62980cd 100644
--- a/AIStudio.Wpf.ADiagram/ViewModels/DiagramsViewModel.cs
+++ b/AIStudio.Wpf.ADiagram/ViewModels/DiagramsViewModel.cs
@@ -41,7 +41,14 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
         public DiagramsViewModel(string filename)
         {
             FileName = filename;
-            OpenFile(filename);
+            var diagramDocument = OpenFile(filename);
+            OpenFile(diagramDocument);
+        }
+
+        public DiagramsViewModel(string filename, DiagramDocument diagramDocument)
+        {
+            FileName = filename;
+            OpenFile(diagramDocument);
         }
 
         protected virtual void InitDiagramViewModel()
@@ -189,7 +196,7 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
             DiagramViewModel.SelectAllCommand.Execute(null);
         }
 
-        private void OpenFile(string filename)
+        public static DiagramDocument OpenFile(string filename)
         {
             try
             {
@@ -210,44 +217,7 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
                     diagramDocument = JsonConvert.DeserializeObject<DiagramDocument>(File.ReadAllText(filename));
                 }
 
-                Title = diagramDocument.Title;
-                DiagramType = diagramDocument.DiagramType;
-
-                List<DiagramViewModel> viewModels = new List<DiagramViewModel>();
-                foreach (var diagramitem in diagramDocument.DiagramItems)
-                {
-                    var viewModel = new DiagramViewModel();
-                    viewModel.Name = diagramitem.Name;
-                    viewModel.DiagramType = diagramitem.DiagramType;
-
-                    foreach (DesignerItemBase diagramItemData in diagramitem.AllDesignerItems)
-                    {
-                        Type type = TypeHelper.GetType(diagramItemData.ItemTypeName);
-
-                        DesignerItemViewModelBase itemBase = (DesignerItemViewModelBase)Activator.CreateInstance(type, viewModel, diagramItemData);
-                        viewModel.Items.Add(itemBase);
-                    }
-
-                    foreach (var connection in diagramitem.Connections)
-                    {
-                        connection.SourceType = System.Type.GetType(connection.SourceTypeName);
-                        connection.SinkType = System.Type.GetType(connection.SinkTypeName);
-                        DesignerItemViewModelBase sourceItem = GetConnectorDataItem(viewModel, connection.SourceId, connection.SourceType);
-                        ConnectorOrientation sourceConnectorOrientation = connection.SourceOrientation;
-                        FullyCreatedConnectorInfo sourceConnectorInfo = GetFullConnectorInfo(connection.Id, sourceItem, sourceConnectorOrientation, connection.SourceXRatio, connection.SourceYRatio, connection.SourceInnerPoint);
-
-                        DesignerItemViewModelBase sinkItem = GetConnectorDataItem(viewModel, connection.SinkId, connection.SinkType);
-                        ConnectorOrientation sinkConnectorOrientation = connection.SinkOrientation;
-                        FullyCreatedConnectorInfo sinkConnectorInfo = GetFullConnectorInfo(connection.Id, sinkItem, sinkConnectorOrientation, connection.SinkXRatio, connection.SinkYRatio, connection.SinkInnerPoint);
-
-                        ConnectorViewModel connectionVM = new ConnectorViewModel(viewModel, sourceConnectorInfo, sinkConnectorInfo, connection);
-                        viewModel.Items.Add(connectionVM);
-                    }
-
-                    viewModels.Add(viewModel);
-                }
-                DiagramViewModels = new ObservableCollection<IDiagramViewModel>(viewModels);
-                DiagramViewModel = DiagramViewModels.FirstOrDefault();
+                return diagramDocument;
             }
             catch (System.IO.FileNotFoundException fnfe)
             {
@@ -276,6 +246,57 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
             }
         }
 
+        private void OpenFile(DiagramDocument diagramDocument)
+        {
+            Title = diagramDocument.Title;
+            DiagramType = diagramDocument.DiagramType;
+
+            List<DiagramViewModel> viewModels = new List<DiagramViewModel>();
+            foreach (var diagramItem in diagramDocument.DiagramItems)
+            {
+                var viewModel = new DiagramViewModel();
+                viewModel.Name = diagramItem.Name;
+                viewModel.DiagramType = diagramItem.DiagramType;
+                viewModel.ShowGrid = diagramItem.ShowGrid;
+                viewModel.GridCellSize = diagramItem.GridCellSize;
+                viewModel.CellHorizontalAlignment = diagramItem.CellHorizontalAlignment;
+                viewModel.CellVerticalAlignment = diagramItem.CellVerticalAlignment;
+                viewModel.PageSizeOrientation = diagramItem.PageSizeOrientation;
+                viewModel.PageSize = diagramItem.PageSize;
+                viewModel.PageSizeType = diagramItem.PageSizeType;
+                viewModel.GridMargin = diagramItem.GridMargin;
+                viewModel.GridColor = diagramItem.GridColor;
+
+                foreach (DesignerItemBase diagramItemData in diagramItem.AllDesignerItems)
+                {
+                    Type type = TypeHelper.GetType(diagramItemData.ItemTypeName);
+
+                    DesignerItemViewModelBase itemBase = (DesignerItemViewModelBase)Activator.CreateInstance(type, viewModel, diagramItemData);
+                    viewModel.Items.Add(itemBase);
+                }
+
+                foreach (var connection in diagramItem.Connections)
+                {
+                    connection.SourceType = System.Type.GetType(connection.SourceTypeName);
+                    connection.SinkType = System.Type.GetType(connection.SinkTypeName);
+                    DesignerItemViewModelBase sourceItem = GetConnectorDataItem(viewModel, connection.SourceId, connection.SourceType);
+                    ConnectorOrientation sourceConnectorOrientation = connection.SourceOrientation;
+                    FullyCreatedConnectorInfo sourceConnectorInfo = GetFullConnectorInfo(connection.Id, sourceItem, sourceConnectorOrientation, connection.SourceXRatio, connection.SourceYRatio, connection.SourceInnerPoint);
+
+                    DesignerItemViewModelBase sinkItem = GetConnectorDataItem(viewModel, connection.SinkId, connection.SinkType);
+                    ConnectorOrientation sinkConnectorOrientation = connection.SinkOrientation;
+                    FullyCreatedConnectorInfo sinkConnectorInfo = GetFullConnectorInfo(connection.Id, sinkItem, sinkConnectorOrientation, connection.SinkXRatio, connection.SinkYRatio, connection.SinkInnerPoint);
+
+                    ConnectorViewModel connectionVM = new ConnectorViewModel(viewModel, sourceConnectorInfo, sinkConnectorInfo, connection);
+                    viewModel.Items.Add(connectionVM);
+                }
+
+                viewModels.Add(viewModel);
+            }
+            DiagramViewModels = new ObservableCollection<IDiagramViewModel>(viewModels);
+            DiagramViewModel = DiagramViewModels.FirstOrDefault();
+        }
+
         public bool SaveFile(bool isSaveAs = false)
         {
             string filter = "Files (*.xml)|*.xml|Files (*.json)|*.json|All Files (*.*)|*.*";
@@ -307,6 +328,15 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
                 DiagramItem diagramItem = new DiagramItem();
                 diagramItem.Name = viewModel.Name;
                 diagramItem.DiagramType = viewModel.DiagramType;
+                diagramItem.ShowGrid = viewModel.ShowGrid;
+                diagramItem.GridCellSize = viewModel.GridCellSize;
+                diagramItem.CellHorizontalAlignment = viewModel.CellHorizontalAlignment;
+                diagramItem.CellVerticalAlignment = viewModel.CellVerticalAlignment;
+                diagramItem.PageSizeOrientation = viewModel.PageSizeOrientation;
+                diagramItem.PageSize = viewModel.PageSize;
+                diagramItem.PageSizeType = viewModel.PageSizeType;
+                diagramItem.GridMargin = viewModel.GridMargin;
+                diagramItem.GridColor = viewModel.GridColor;
 
                 diagramItem.AddItems(DiagramViewModel.Items);            
 
@@ -891,6 +921,15 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
                 DiagramItem diagramItem = new DiagramItem();
                 diagramItem.Name = viewModel.Name;
                 diagramItem.DiagramType = viewModel.DiagramType;
+                diagramItem.ShowGrid = viewModel.ShowGrid;
+                diagramItem.GridCellSize = viewModel.GridCellSize;
+                diagramItem.CellHorizontalAlignment = viewModel.CellHorizontalAlignment;
+                diagramItem.CellVerticalAlignment = viewModel.CellVerticalAlignment;
+                diagramItem.PageSizeOrientation = viewModel.PageSizeOrientation;
+                diagramItem.PageSize = viewModel.PageSize;
+                diagramItem.PageSizeType = viewModel.PageSizeType;
+                diagramItem.GridMargin = viewModel.GridMargin;
+                diagramItem.GridColor = viewModel.GridColor;
 
                 diagramItem.AddItems(DiagramViewModel.Items);
 
@@ -920,6 +959,15 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
                 viewModel = new DiagramViewModel();
                 viewModel.Name = NewNameHelper.GetNewName(DiagramViewModels.Select(p => p.Name), "页-");
                 viewModel.DiagramType = diagramItem.DiagramType;
+                viewModel.ShowGrid = diagramItem.ShowGrid;
+                viewModel.GridCellSize = diagramItem.GridCellSize;
+                viewModel.CellHorizontalAlignment = diagramItem.CellHorizontalAlignment;
+                viewModel.CellVerticalAlignment = diagramItem.CellVerticalAlignment;
+                viewModel.PageSizeOrientation = diagramItem.PageSizeOrientation;
+                viewModel.PageSize = diagramItem.PageSize;
+                viewModel.PageSizeType = diagramItem.PageSizeType;
+                viewModel.GridMargin = diagramItem.GridMargin;
+                viewModel.GridColor = diagramItem.GridColor;
 
                 foreach (DesignerItemBase diagramItemData in diagramItem.AllDesignerItems)
                 {
diff --git a/AIStudio.Wpf.ADiagram/ViewModels/FlowchartViewModel.cs b/AIStudio.Wpf.ADiagram/ViewModels/FlowchartViewModel.cs
index 6af81cd..60df0ba 100644
--- a/AIStudio.Wpf.ADiagram/ViewModels/FlowchartViewModel.cs
+++ b/AIStudio.Wpf.ADiagram/ViewModels/FlowchartViewModel.cs
@@ -1,4 +1,5 @@
-using AIStudio.Wpf.ADiagram.ViewModels;
+using AIStudio.Wpf.ADiagram.Models;
+using AIStudio.Wpf.ADiagram.ViewModels;
 using AIStudio.Wpf.Flowchart.ViewModels;
 using System;
 using System.Collections.Generic;
@@ -18,9 +19,12 @@ namespace AIStudio.Wpf.Flowchart
         {
 
         }
-        public FlowchartViewModel(string filename) : base(filename)
+        public FlowchartViewModel(string filename, DiagramDocument diagramDocument) : base(filename, diagramDocument)
         {
-
+            if (DiagramViewModel != null)
+            {
+                FlowchartService.InitData(DiagramViewModel.Items.OfType<FlowNode>().ToList(), DiagramViewModel.Items.OfType<ConnectorViewModel>().ToList(), DiagramViewModel);
+            }
         }
 
         protected override void InitDiagramViewModel()
@@ -101,6 +105,14 @@ namespace AIStudio.Wpf.Flowchart
             FlowchartService.InitData(DiagramViewModel.Items.OfType<FlowNode>().ToList(), DiagramViewModel.Items.OfType<ConnectorViewModel>().ToList(), DiagramViewModel);
         }
 
- 
+        public override void Dispose()
+        {
+            base.Dispose();
+
+            foreach (var viewModel in DiagramViewModels)
+            {
+                FlowchartService.DisposeData(viewModel);
+            }
+        }
     }
 }
diff --git a/AIStudio.Wpf.ADiagram/ViewModels/LogicalViewModel.cs b/AIStudio.Wpf.ADiagram/ViewModels/LogicalViewModel.cs
index 260fc8c..69f3e96 100644
--- a/AIStudio.Wpf.ADiagram/ViewModels/LogicalViewModel.cs
+++ b/AIStudio.Wpf.ADiagram/ViewModels/LogicalViewModel.cs
@@ -1,4 +1,5 @@
-using AIStudio.Wpf.ADiagram.ViewModels;
+using AIStudio.Wpf.ADiagram.Models;
+using AIStudio.Wpf.ADiagram.ViewModels;
 using AIStudio.Wpf.Logical.ViewModels;
 using System;
 using System.Linq;
@@ -14,7 +15,7 @@ namespace AIStudio.Wpf.Logical
         {
 
         }
-        public LogicalViewModel(string filename) : base(filename)
+        public LogicalViewModel(string filename, DiagramDocument diagramDocument) : base(filename, diagramDocument)
         {
 
         }
diff --git a/AIStudio.Wpf.ADiagram/ViewModels/MainWindowViewModel.cs b/AIStudio.Wpf.ADiagram/ViewModels/MainWindowViewModel.cs
index b228534..b58ab72 100644
--- a/AIStudio.Wpf.ADiagram/ViewModels/MainWindowViewModel.cs
+++ b/AIStudio.Wpf.ADiagram/ViewModels/MainWindowViewModel.cs
@@ -786,7 +786,24 @@ namespace AIStudio.Wpf.ADiagram.ViewModels
                 return;
             }
 
-            var flow = new DiagramsViewModel(filename);
+            var diagram = DiagramsViewModel.OpenFile(filename);
+            DiagramsViewModel flow;
+            if (diagram.DiagramType == DiagramType.FlowChart)
+            {
+                flow = new FlowchartViewModel(filename, diagram);
+            }
+            else if (diagram.DiagramType == DiagramType.Logical)
+            {
+                flow = new LogicalViewModel(filename, diagram);
+            }
+            else if (diagram.DiagramType == DiagramType.SFC)
+            {
+                flow = new SFCViewModel(filename, diagram);
+            }
+            else
+            {
+                flow = new DiagramsViewModel(filename, diagram);
+            }
             DiagramsViewModels.Add(flow);
             DiagramsViewModel = flow;
 
diff --git a/AIStudio.Wpf.ADiagram/ViewModels/SFCViewModel.cs b/AIStudio.Wpf.ADiagram/ViewModels/SFCViewModel.cs
index 07d7e39..dc8cf86 100644
--- a/AIStudio.Wpf.ADiagram/ViewModels/SFCViewModel.cs
+++ b/AIStudio.Wpf.ADiagram/ViewModels/SFCViewModel.cs
@@ -1,4 +1,5 @@
-using AIStudio.Wpf.ADiagram.ViewModels;
+using AIStudio.Wpf.ADiagram.Models;
+using AIStudio.Wpf.ADiagram.ViewModels;
 using AIStudio.Wpf.Flowchart.ViewModels;
 using AIStudio.Wpf.SFC;
 using AIStudio.Wpf.SFC.ViewModels;
@@ -21,9 +22,16 @@ namespace AIStudio.Wpf.Flowchart
         {
 
         }
-        public SFCViewModel(string filename) : base(filename)
+        public SFCViewModel(string filename, DiagramDocument diagramDocument) : base(filename, diagramDocument)
         {
-
+            if (DiagramViewModel != null)
+            {
+                SFCService.InitData(DiagramViewModel.Items.OfType<SFCNode>().ToList(), DiagramViewModel.Items.OfType<ConnectorViewModel>().ToList(), DiagramViewModel);
+            }
+            readDataTimer.Elapsed += timeCycle;
+            readDataTimer.Interval = 1000;
+            readDataTimer.AutoReset = false;
+            readDataTimer.Start();
         }
 
         protected override void InitDiagramViewModel()
@@ -285,6 +293,11 @@ namespace AIStudio.Wpf.Flowchart
 
             readDataTimer.Stop();
             readDataTimer.Dispose();
+
+            foreach (var viewModel in DiagramViewModels)
+            {
+                SFCService.DisposeData(viewModel);
+            }
         }
     }
 }
diff --git a/AIStudio.Wpf.Flowchart/FlowchartService.cs b/AIStudio.Wpf.Flowchart/FlowchartService.cs
index 9b9c6e2..c7fecad 100644
--- a/AIStudio.Wpf.Flowchart/FlowchartService.cs
+++ b/AIStudio.Wpf.Flowchart/FlowchartService.cs
@@ -363,5 +363,10 @@ namespace AIStudio.Wpf.Flowchart
                     break;
             }
         }
+
+        public static void DisposeData(IDiagramViewModel viewModel)
+        {
+            FlowNodes.Remove(viewModel);
+        }
     }
 }
diff --git a/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC.csproj b/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC.csproj
index f1e3f00..dd8b1e4 100644
--- a/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC.csproj
+++ b/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC.csproj
@@ -5,10 +5,6 @@
     <UseWPF>true</UseWPF>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Folder Include="Models\" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="MathParser.org-mXparser" Version="4.4.2" />
   </ItemGroup>
diff --git a/AIStudio.Wpf.SFC/Models/SFCNodeDesignerItem.cs b/AIStudio.Wpf.SFC/Models/SFCNodeDesignerItem.cs
new file mode 100644
index 0000000..742d490
--- /dev/null
+++ b/AIStudio.Wpf.SFC/Models/SFCNodeDesignerItem.cs
@@ -0,0 +1,91 @@
+using AIStudio.Wpf.SFC.ViewModels;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+using System.Xml.Serialization;
+using Util.DiagramDesigner;
+
+namespace AIStudio.Wpf.SFC.Models
+{
+    public class SFCNodeDesignerItem : DesignerItemBase
+    {
+        public SFCNodeDesignerItem()
+        {
+
+        }
+        public SFCNodeDesignerItem(SFCNode item) : base(item)
+        {
+            this.Connectors = new List<ConnectorItem>();
+            foreach (var fullyCreatedConnectorInfo in item.Connectors)
+            {
+                ConnectorItem connector = new ConnectorItem()
+                {
+                    XRatio = fullyCreatedConnectorInfo.XRatio,
+                    YRatio = fullyCreatedConnectorInfo.YRatio,
+                    ConnectorWidth = fullyCreatedConnectorInfo.ConnectorWidth,
+                    ConnectorHeight = fullyCreatedConnectorInfo.ConnectorHeight,
+                    Orientation = fullyCreatedConnectorInfo.Orientation,
+                    IsInnerPoint = fullyCreatedConnectorInfo.IsInnerPoint,
+                    ValueTypePoint = fullyCreatedConnectorInfo.ValueTypePoint,
+                    ConnectorValue = fullyCreatedConnectorInfo.ConnectorValue
+                };
+                this.Connectors.Add(connector);
+            }
+            Kind = item.Kind;
+            Expression = item.Expression;
+
+            if (item is SFCActionNode actionNode)
+            {
+                LinkPoints = new List<LinkPoint> { actionNode.LinkPoint };
+            }
+            else if (item is SFCConditionNode sFCConditionNode)
+            {
+                LinkPoints = new List<LinkPoint>(sFCConditionNode.LinkPoint);
+            }
+            else if (item is Simulate_SolenoidViewModel simulate_SolenoidViewModel)
+            {
+                LinkPoints = new List<LinkPoint> { simulate_SolenoidViewModel.DILinkPoint, simulate_SolenoidViewModel.DOLinkPoint };
+            }
+            else if (item is Simulate_StartViewModel simulate_StartViewModel)
+            {
+                LinkPoints = new List<LinkPoint> { simulate_StartViewModel.LinkPoint };
+            }
+            else if (item is Simulate_TankViewModel simulate_TankViewModel)
+            {
+                LinkPoints = new List<LinkPoint> { simulate_TankViewModel.LinkPoint };
+            }
+
+        }
+
+        [XmlArray]
+        public List<ConnectorItem> Connectors { get; set; }
+
+        [XmlAttribute]
+        public SFCNodeKinds Kind { get; set; }
+
+        [XmlAttribute]
+        public string Expression { get; set; }
+
+        [XmlIgnore]
+        public List<LinkPoint> LinkPoints { get; set; } = new List<LinkPoint>();
+
+        [JsonIgnore]
+        [XmlElement("LinkPoint")]
+        public string XmlLinkPoints
+        {
+            get
+            {
+                return SFCService.SerializeLinkPoint(LinkPoints);
+            }
+            set
+            {
+                LinkPoints = SFCService.DeserializeLinkPoint(value);
+            }
+        }
+
+    }
+}
diff --git a/AIStudio.Wpf.SFC/SFCService.cs b/AIStudio.Wpf.SFC/SFCService.cs
index 848370b..ca0dc76 100644
--- a/AIStudio.Wpf.SFC/SFCService.cs
+++ b/AIStudio.Wpf.SFC/SFCService.cs
@@ -16,18 +16,18 @@ namespace AIStudio.Wpf.SFC
         {
             LinkPoint = new List<LinkPoint>();
 
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "S0", Despcription = "启动按钮", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K1_DI", Despcription = "阀门1输入", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K2_DI", Despcription = "阀门2输入", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K3_DI", Despcription = "阀门3输入", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K4_DI", Despcription = "阀门4输入", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K1_DO", Despcription = "阀门1反馈", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K2_DO", Despcription = "阀门2反馈", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K3_DO", Despcription = "阀门3反馈", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "K4_DO", Despcription = "阀门4反馈", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "T1", Despcription = "容器1液位", Value = 100, });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "T2", Despcription = "容器2液位", Value = 0 });
-            LinkPoint.Add(new LinkPoint { Id = Guid.NewGuid(), Name = "T3", Despcription = "容器3液位", Value = 20 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("9943AC3B-5E19-4AF4-8CB0-26998FC31545"), Name = "S0", Despcription = "启动按钮", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("F60007E3-913B-43C4-B80B-9624B4BD95AC"), Name = "K1_DI", Despcription = "阀门1输入", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("8B2CBA04-A9C8-4FF0-BE95-27546292FB90"), Name = "K2_DI", Despcription = "阀门2输入", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("F213B720-ADC2-41C9-82B7-D77B56B99CB7"), Name = "K3_DI", Despcription = "阀门3输入", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("48BB7F62-A476-4A68-9DB4-5BD4201C1C26"), Name = "K4_DI", Despcription = "阀门4输入", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("5E52ACA8-8DB4-4D39-A3BF-73EE3A551253"), Name = "K1_DO", Despcription = "阀门1反馈", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("5B8C53FF-A4CA-40BA-9F36-5C228D9D0C5A"), Name = "K2_DO", Despcription = "阀门2反馈", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("29496600-74CF-4AB0-88D1-4C5BFAD4C405"), Name = "K3_DO", Despcription = "阀门3反馈", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("15733895-96E5-4F90-9BC2-3C7FF0A2B048"), Name = "K4_DO", Despcription = "阀门4反馈", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("BD593101-C759-4077-A3F2-F86AA2FC6DF8"), Name = "T1", Despcription = "容器1液位", Value = 100, });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("2BCBD2C9-9BCE-4F10-B115-088DEE1F4E08"), Name = "T2", Despcription = "容器2液位", Value = 0 });
+            LinkPoint.Add(new LinkPoint { Id = Guid.Parse("DBD10A3C-7E2E-4DAE-9CB0-A2132DC469DF"), Name = "T3", Despcription = "容器3液位", Value = 20 });
         }
 
         /// <summary>
@@ -165,7 +165,7 @@ namespace AIStudio.Wpf.SFC
                                 SetStatus(next, 1);
                             }
                         }
-                    }                 
+                    }
                 }
             }
         }
@@ -192,5 +192,27 @@ namespace AIStudio.Wpf.SFC
                     break;
             }
         }
+
+
+        public static string SerializeLinkPoint(List<LinkPoint> points)
+        {
+            return string.Join(",", points.Select(p => p.Id));
+        }
+
+        public static List<LinkPoint> DeserializeLinkPoint(string point)
+        {
+            List<LinkPoint> links = new List<LinkPoint>();
+            string[] pieces = point.Split(new char[] { ',' });
+            foreach (var piece in pieces)
+            {
+                links.Add(LinkPoint.FirstOrDefault(p => p.Id.ToString() == piece));
+            }
+            return links;
+        }
+
+        public static void DisposeData(IDiagramViewModel viewModel)
+        {
+            SFCNodes.Remove(viewModel);
+        }
     }
 }
diff --git a/AIStudio.Wpf.SFC/ViewModels/SFCActionNode.cs b/AIStudio.Wpf.SFC/ViewModels/SFCActionNode.cs
index 421e717..b64329a 100644
--- a/AIStudio.Wpf.SFC/ViewModels/SFCActionNode.cs
+++ b/AIStudio.Wpf.SFC/ViewModels/SFCActionNode.cs
@@ -21,19 +21,6 @@ namespace AIStudio.Wpf.SFC.ViewModels
             
         }
 
-        private string _expression;
-        public string Expression
-        {
-            get
-            {
-                return _expression;
-            }
-            set
-            {
-                SetProperty(ref _expression, value);
-            }
-        }
-
         private LinkPoint _linkPoint;
         public LinkPoint LinkPoint
         {
diff --git a/AIStudio.Wpf.SFC/ViewModels/SFCConditionNode.cs b/AIStudio.Wpf.SFC/ViewModels/SFCConditionNode.cs
index c3ff23d..8184f7e 100644
--- a/AIStudio.Wpf.SFC/ViewModels/SFCConditionNode.cs
+++ b/AIStudio.Wpf.SFC/ViewModels/SFCConditionNode.cs
@@ -42,32 +42,6 @@ namespace AIStudio.Wpf.SFC.ViewModels
             }
         }
 
-        private string _expression;
-        public string Expression
-        {
-            get
-            {
-                return _expression;
-            }
-            set
-            {
-                SetProperty(ref _expression, value);
-            }
-        }
-
-        private string _para;
-        public string Para
-        {
-            get
-            {
-                return _para;
-            }
-            set
-            {
-                _para = value;
-            }
-        }
-
         private ObservableCollection<LinkPoint> _linkPoint = new ObservableCollection<LinkPoint>();
         public ObservableCollection<LinkPoint> LinkPoint
         {
diff --git a/AIStudio.Wpf.SFC/ViewModels/SFCNode.cs b/AIStudio.Wpf.SFC/ViewModels/SFCNode.cs
index 7e98e40..5e6660e 100644
--- a/AIStudio.Wpf.SFC/ViewModels/SFCNode.cs
+++ b/AIStudio.Wpf.SFC/ViewModels/SFCNode.cs
@@ -1,8 +1,10 @@
 using AIStudio.Wpf.BaseDiagram;
 using AIStudio.Wpf.BaseDiagram.Services;
+using AIStudio.Wpf.SFC.Models;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 using System.Text;
 using System.Windows.Media;
 using Util.DiagramDesigner;
@@ -18,7 +20,7 @@ namespace AIStudio.Wpf.SFC.ViewModels
             ColorViewModel.FillColor.Color = Colors.Blue;
             Kind = kind;
             ItemWidth = 80;
-            ItemHeight = 40;         
+            ItemHeight = 40;
         }
 
         public SFCNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
@@ -37,12 +39,60 @@ namespace AIStudio.Wpf.SFC.ViewModels
             base.Init();
 
             visualiserService = ApplicationServicesProvider.Instance.Provider.VisualizerService;
-        }        
+        }
 
         protected override void LoadDesignerItemViewModel(IDiagramViewModel parent, SelectableDesignerItemBase designerbase)
         {
             base.LoadDesignerItemViewModel(parent, designerbase);
 
+            SFCNodeDesignerItem designer = designerbase as SFCNodeDesignerItem;
+            this.Kind = designer.Kind;
+            this.Expression = designer.Expression;
+
+            foreach (var connector in designer.Connectors)
+            {
+                FullyCreatedConnectorInfo fullyCreatedConnectorInfo = new FullyCreatedConnectorInfo(this, connector.Orientation, true);
+                fullyCreatedConnectorInfo.XRatio = connector.XRatio;
+                fullyCreatedConnectorInfo.YRatio = connector.YRatio;
+                fullyCreatedConnectorInfo.ConnectorWidth = connector.ConnectorWidth;
+                fullyCreatedConnectorInfo.ConnectorHeight = connector.ConnectorHeight;
+                fullyCreatedConnectorInfo.Orientation = connector.Orientation;
+                fullyCreatedConnectorInfo.IsInnerPoint = connector.IsInnerPoint;
+                fullyCreatedConnectorInfo.ValueTypePoint = connector.ValueTypePoint;
+                fullyCreatedConnectorInfo.ConnectorValue = connector.ConnectorValue;
+
+                if (fullyCreatedConnectorInfo.Orientation == ConnectorOrientation.Left)
+                {
+                    Input.Add(Input.Count, fullyCreatedConnectorInfo);
+                }
+                else if (fullyCreatedConnectorInfo.Orientation == ConnectorOrientation.Right)
+                {
+                    Output.Add(Output.Count, fullyCreatedConnectorInfo);
+                }
+                AddConnector(fullyCreatedConnectorInfo);
+            }
+
+            if (this is SFCActionNode actionNode)
+            {
+                actionNode.LinkPoint = designer.LinkPoints.FirstOrDefault();
+            }
+            else if (this is SFCConditionNode sFCConditionNode)
+            {
+                sFCConditionNode.LinkPoint = new System.Collections.ObjectModel.ObservableCollection<LinkPoint>(designer.LinkPoints);
+            }
+            else if (this is Simulate_SolenoidViewModel simulate_SolenoidViewModel)
+            {
+                simulate_SolenoidViewModel.DILinkPoint = designer.LinkPoints.FirstOrDefault();
+                simulate_SolenoidViewModel.DOLinkPoint = designer.LinkPoints.LastOrDefault();
+            }
+            else if (this is Simulate_StartViewModel simulate_StartViewModel)
+            {
+                simulate_StartViewModel.LinkPoint = designer.LinkPoints.FirstOrDefault();
+            }
+            else if (this is Simulate_TankViewModel simulate_TankViewModel)
+            {
+                simulate_TankViewModel.LinkPoint = designer.LinkPoints.FirstOrDefault();
+            }
         }
 
         protected override void InitConnector()
@@ -136,6 +186,20 @@ namespace AIStudio.Wpf.SFC.ViewModels
             }
         }
 
+        private string _expression;
+        public string Expression
+        {
+            get
+            {
+                return _expression;
+            }
+            set
+            {
+                SetProperty(ref _expression, value);
+            }
+        }
+
+        #region 暂不保存
         private int _status;
 
         public int Status
@@ -149,5 +213,6 @@ namespace AIStudio.Wpf.SFC.ViewModels
 
         public List<SFCNode> NextNode { get; set; } = new List<SFCNode>();
         public List<SFCNode> PreNode { get; set; } = new List<SFCNode>();
+        #endregion
     }
 }
diff --git a/Util.DiagramDesigner/Models/SelectableDesignerItemBase.cs b/Util.DiagramDesigner/Models/SelectableDesignerItemBase.cs
index 6c5d75a..f8a5909 100644
--- a/Util.DiagramDesigner/Models/SelectableDesignerItemBase.cs
+++ b/Util.DiagramDesigner/Models/SelectableDesignerItemBase.cs
@@ -348,6 +348,17 @@ namespace Util.DiagramDesigner
             string[] pieces = point.Split(new char[] { ',' });
             return new Point(double.Parse(pieces[0]), double.Parse(pieces[1]));
         }
+
+        public static string SerializeSize(Size size)
+        {
+            return string.Format("{0},{1}", size.Width, size.Height);
+        }
+
+        public static Size DeserializeSize(string size)
+        {
+            string[] pieces = size.Split(new char[] { ',' });
+            return new Size(double.Parse(pieces[0]), double.Parse(pieces[1]));
+        }
     }
 
 
diff --git a/Util.DiagramDesigner/ViewModels/IDiagramViewModel.cs b/Util.DiagramDesigner/ViewModels/IDiagramViewModel.cs
index 3bd5edc..09d3a81 100644
--- a/Util.DiagramDesigner/ViewModels/IDiagramViewModel.cs
+++ b/Util.DiagramDesigner/ViewModels/IDiagramViewModel.cs
@@ -44,20 +44,20 @@ namespace Util.DiagramDesigner
         bool BelongToSameGroup(IGroupable item1, IGroupable item2);
         Rect GetBoundingRectangle(IEnumerable<DesignerItemViewModelBase> items);
         void UpdateZIndex();
-        Size PageSize { get;}
+
+        Size PageSize { get; set; }
         PageSizeType PageSizeType { get; set; }
         bool ShowGrid { get; set; }
         Size GridCellSize { get; set; }
         PageSizeOrientation PageSizeOrientation { get; set; }
-        double GridMargin { get; set; }
-        Color GridColor { get; set; }
-        Point CurrentPoint { get; set; }
-        Color CurrentColor { get; set; }
-
-        DiagramType DiagramType { get; set; }
-
         CellHorizontalAlignment CellHorizontalAlignment { get; set; }
         CellVerticalAlignment CellVerticalAlignment { get; set; }
+        double GridMargin { get; set; }
+        Color GridColor { get; set; }
+        DiagramType DiagramType { get; set; }
+
+        Point CurrentPoint { get; set; }
+        Color CurrentColor { get; set; }
 
         event PropertyChangedEventHandler PropertyChanged;