diff --git a/README.md b/README.md
index 21f3c390..6eabc644 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@
 
 5). Access the web project in the browser by 
 
-    ** http://localhost:5000 **
+    **http://localhost:5000**
 
 **.NET/.NETCore Workflow Engine With Full Source Code** 
 1. **.NET, .NET CORE version both supported**  
@@ -177,7 +177,7 @@ The SlickQua project:http://github.com/besley/slickqua/
 1. 集成BpmnJS 设计器，XML模式转换为BPMN2;
 2. 重构Slickflow.Engine项目;
 3. 重写ProcessModelBPMN，适应BPMN2模型;
-4. 全部项目.NET6版本实现；
+4. 全部项目 .NET8 版本实现；
 5. 技术开发文档网站发布
 	http://doc.slickflow.com (中文) 
 	http://doc.slickflow.net(English) 
diff --git a/source/.vs/SfBpmn/DesignTimeBuild/.dtbcache.v2 b/source/.vs/SfBpmn/DesignTimeBuild/.dtbcache.v2
index 6671eba9..4cc517ad 100644
Binary files a/source/.vs/SfBpmn/DesignTimeBuild/.dtbcache.v2 and b/source/.vs/SfBpmn/DesignTimeBuild/.dtbcache.v2 differ
diff --git a/source/.vs/SfBpmn/v17/.suo b/source/.vs/SfBpmn/v17/.suo
index 718c6c73..faa10254 100644
Binary files a/source/.vs/SfBpmn/v17/.suo and b/source/.vs/SfBpmn/v17/.suo differ
diff --git a/source/.vs/SfBpmn/v17/DocumentLayout.json b/source/.vs/SfBpmn/v17/DocumentLayout.json
index 12b01329..fc68ec3c 100644
--- a/source/.vs/SfBpmn/v17/DocumentLayout.json
+++ b/source/.vs/SfBpmn/v17/DocumentLayout.json
@@ -1,32 +1,7 @@
 {
   "Version": 1,
   "WorkspaceRootPath": "D:\\GitHub\\Slickflow\\source\\",
-  "Documents": [
-    {
-      "AbsoluteMoniker": "D:0:0:{1B28181E-6355-4B89-9B05-04FC7641582C}|Lib\\Slickflow.Engine\\Slickflow.Engine.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.engine\\slickflow.engine.csproj||{FA3CD31E-987B-443A-9B81-186104E8DAC1}|",
-      "RelativeMoniker": "D:0:0:{1B28181E-6355-4B89-9B05-04FC7641582C}|Lib\\Slickflow.Engine\\Slickflow.Engine.csproj|solutionrelative:lib\\slickflow.engine\\slickflow.engine.csproj||{FA3CD31E-987B-443A-9B81-186104E8DAC1}|"
-    },
-    {
-      "AbsoluteMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.data\\repository.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
-      "RelativeMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|solutionrelative:lib\\slickflow.data\\repository.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
-    },
-    {
-      "AbsoluteMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.data\\irepository.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
-      "RelativeMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|solutionrelative:lib\\slickflow.data\\irepository.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
-    },
-    {
-      "AbsoluteMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.data\\managerbase.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
-      "RelativeMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|solutionrelative:lib\\slickflow.data\\managerbase.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
-    },
-    {
-      "AbsoluteMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.data\\servicebase.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
-      "RelativeMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|solutionrelative:lib\\slickflow.data\\servicebase.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
-    },
-    {
-      "AbsoluteMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|d:\\github\\slickflow\\source\\lib\\slickflow.data\\sessionfactory.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
-      "RelativeMoniker": "D:0:0:{56C199E4-7F68-4DB5-A4CB-D7C745F286BE}|Lib\\Slickflow.Data\\Slickflow.Data.csproj|solutionrelative:lib\\slickflow.data\\sessionfactory.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
-    }
-  ],
+  "Documents": [],
   "DocumentGroupContainers": [
     {
       "Orientation": 0,
@@ -34,21 +9,8 @@
       "DocumentGroups": [
         {
           "DockedWidth": 200,
-          "SelectedChildIndex": 0,
+          "SelectedChildIndex": -1,
           "Children": [
-            {
-              "$type": "Document",
-              "DocumentIndex": 0,
-              "Title": "Slickflow.Engine",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\Lib\\Slickflow.Engine\\Slickflow.Engine.csproj",
-              "RelativeDocumentMoniker": "Lib\\Slickflow.Engine\\Slickflow.Engine.csproj",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\Lib\\Slickflow.Engine\\Slickflow.Engine.csproj",
-              "RelativeToolTip": "Lib\\Slickflow.Engine\\Slickflow.Engine.csproj",
-              "ViewState": "AQIAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000758|",
-              "WhenOpened": "2024-06-21T08:22:34.51Z",
-              "EditorCaption": ""
-            },
             {
               "$type": "Bookmark",
               "Name": "ST:130:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
@@ -68,67 +30,6 @@
             {
               "$type": "Bookmark",
               "Name": "ST:0:0:{1c4feeaa-4718-4aa9-859d-94ce25d182ba}"
-            },
-            {
-              "$type": "Document",
-              "DocumentIndex": 1,
-              "Title": "Repository.cs",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\Repository.cs",
-              "RelativeDocumentMoniker": "lib\\Slickflow.Data\\Repository.cs",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\Repository.cs",
-              "RelativeToolTip": "lib\\Slickflow.Data\\Repository.cs",
-              "ViewState": "AQIAAAwAAAAAAAAAAAAAACIAAAAbAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
-              "WhenOpened": "2024-06-21T03:28:25.458Z",
-              "EditorCaption": ""
-            },
-            {
-              "$type": "Document",
-              "DocumentIndex": 2,
-              "Title": "IRepository.cs",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\IRepository.cs",
-              "RelativeDocumentMoniker": "lib\\Slickflow.Data\\IRepository.cs",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\IRepository.cs",
-              "RelativeToolTip": "lib\\Slickflow.Data\\IRepository.cs",
-              "ViewState": "AQIAAAwAAAAAAAAAAAAAACEAAAAbAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
-              "WhenOpened": "2024-06-21T03:28:19.37Z"
-            },
-            {
-              "$type": "Document",
-              "DocumentIndex": 3,
-              "Title": "ManagerBase.cs",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\ManagerBase.cs",
-              "RelativeDocumentMoniker": "lib\\Slickflow.Data\\ManagerBase.cs",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\ManagerBase.cs",
-              "RelativeToolTip": "lib\\Slickflow.Data\\ManagerBase.cs",
-              "ViewState": "AQIAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
-              "WhenOpened": "2024-06-21T03:28:17.424Z"
-            },
-            {
-              "$type": "Document",
-              "DocumentIndex": 4,
-              "Title": "ServiceBase.cs",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\ServiceBase.cs",
-              "RelativeDocumentMoniker": "lib\\Slickflow.Data\\ServiceBase.cs",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\ServiceBase.cs",
-              "RelativeToolTip": "lib\\Slickflow.Data\\ServiceBase.cs",
-              "ViewState": "AQIAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
-              "WhenOpened": "2024-06-21T03:28:13.356Z"
-            },
-            {
-              "$type": "Document",
-              "DocumentIndex": 5,
-              "Title": "SessionFactory.cs",
-              "DocumentMoniker": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\SessionFactory.cs",
-              "RelativeDocumentMoniker": "lib\\Slickflow.Data\\SessionFactory.cs",
-              "ToolTip": "D:\\GitHub\\Slickflow\\source\\lib\\Slickflow.Data\\SessionFactory.cs",
-              "RelativeToolTip": "lib\\Slickflow.Data\\SessionFactory.cs",
-              "ViewState": "AQIAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
-              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
-              "WhenOpened": "2024-06-21T03:28:08.329Z"
             }
           ]
         }
diff --git a/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfo.cs b/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfo.cs
index 32cc6d70..faa34f38 100644
--- a/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfo.cs
+++ b/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfo.cs
@@ -16,7 +16,7 @@
 [assembly: System.Reflection.AssemblyCopyrightAttribute("@2014-2024")]
 [assembly: System.Reflection.AssemblyDescriptionAttribute("Open Source Workflow Engine based on .NET5")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("2.2.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("2.2.0.0+04376c5d241af5bee7128f47e85d969cbeff30f5")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("2.2.0.0+1becc6fad23b87f95891ca08f6e9094d66049dc4")]
 [assembly: System.Reflection.AssemblyProductAttribute("Slickflow.NET")]
 [assembly: System.Reflection.AssemblyTitleAttribute("Slickflow.Engine")]
 [assembly: System.Reflection.AssemblyVersionAttribute("2.2.0.0")]
diff --git a/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfoInputs.cache b/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfoInputs.cache
index 3ded147d..21304363 100644
--- a/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfoInputs.cache
+++ b/source/lib/Slickflow.Engine/obj/Debug/net8.0/Slickflow.Engine.AssemblyInfoInputs.cache
@@ -1 +1 @@
-67211f904f6ebf369a4ada1181d51667893c3c915d37c556549596699d4ccdcf
+c6a6e23b8f64695411f5f5ca4314a408081210ef0a98a907eea7b0f6e5abea19