WF4.0 Beta1 flow Designer and Activity Designer

WF4.0 Beta1 flow Designer and Activity Designer

Data

Public class myData { Public string result {Set; get ;}   Public string description {Set; get ;} }

 

 

Custom Activity

Public sealed class node <T>: NativeActivity <myData> { Public node () : Base () { This. DisplayName = "";   }   String _ n = "mywait "; Public string node name { Get {return _ n ;} Set {_ n = value ;} }   String _ s = "Enter content "; Public string content { Get {return _ s ;} Set {_ s = value ;} }   Protected override void Execute (ActivityExecutionContext context) { System. Console. WriteLine ("content: {0}", content ); Context. CreateNamedBookmark (node name, new BookmarkCallback (bookmarkCallback )); }   Void bookmarkCallback (ActivityExecutionContext context, Bookmark bookmark, object obj) { MyData r = obj as myData;   If (r. Result = "") { System. Console. WriteLine ("{0}, please handle the following issues:", r. Description ); } This. Result. Set (context, r ); } }

 

Custom Designer

<Sad: WorkflowElementDesigner x: Class = "WpfApplication1.myDesigner" Xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" Xmlns: x = "http://schemas.microsoft.com/winfx/2006/xaml" Xmlns: sad = "clr-namespace: System. Activities. Design; assembly = System. Activities. Design" Xmlns: sadv = "clr-namespace: System. Activities. Design. View; assembly = System. Activities. Design">   <Sad: WorkflowElementDesigner. Resources>   <DataTemplate x: Key = "d1"> <StackPanel> <TextBlock Margin = "," Text = "content:"/> <TextBox Height = "50" AcceptsReturn = "True" Text = "{Binding Path = ModelItem. Content}"/> </StackPanel>   </DataTemplate>   </Sad: WorkflowElementDesigner. Resources>   <Grid> <ContentPresenter ContentTemplate = "{DynamicResource d1}" Content = "{Binding}"/> </Grid> </Sad: WorkflowElementDesigner>

 

Process designer

<Window x: Class = "WpfApplication1.Window1" Xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" Xmlns: x = "http://schemas.microsoft.com/winfx/2006/xaml" Title = "Window1"> <StackPanel> <StackPanel Orientation = "Horizontal"> <Button Content = "Startup Process" Width = "80" Height = "30" Click = "Button_Click"/> <TextBlock Margin = "20, 0, 0, 0" Text = ""/>   <Button Name = "yes" Content = "agree" Width = "80" Height = "30" Click = "yes_Click"/> <Button Name = "nextUser" Content = "Submit to the specified person for another discussion" Width = "80" Height = "30" Click = "nextUser_Click"/> <TextBox Name = "tb" Width = "200"/> </StackPanel>   <StackPanel Orientation = "Horizontal" Loaded = "StackPanel_Loaded">   <StackPanel xmlns: sad = "clr-namespace: System. Activities. Design; assembly = System. Activities. Design"> <StackPanel Name = "propertyPanel"/> <Sad: ToolboxControl Width = "250" Height = "400" Name = "toolbox"/> </StackPanel> <ContentControl Height = "800" Width = "800" Name = "desienerPanel"/> </StackPanel> </StackPanel> </Window>

Public partial class Window1: Window { Public Window1 () { InitializeComponent (); } WorkflowDesigner designer; Private void StackPanel_Loaded (object sender, RoutedEventArgs e) { ToolboxCategoryItemsCollection toolList = new ToolboxCategoryItemsCollection ("basic tools "); Toolbox. Categories. Add (toolList ); ToolList. Add (new ToolboxItemWrapper (typeof (node <myData>), "Node ")); ToolList. Add (new ToolboxItemWrapper (typeof (System. Activities. Statements. FlowSwitch), "branch ")); ToolList. Add (new ToolboxItemWrapper (typeof (System. Activities. Statements. WriteLine), "output ")); // ======   DesignerMetadata dm = new DesignerMetadata (); Dm. Register (); //-   AttributeTableBuilder builder = new AttributeTableBuilder (); Builder. AddCustomAttributes (typeof (node <myData>), new DesignerAttribute (typeof (myDesigner ))); MetadataStore. AddAttributeTable (builder. CreateTable ());   // ==============   Designer = new WorkflowDesigner ();   Var root = new System. Activities. Statements. Flowchart ();   Var v = new System. Activities. Variable <myData> (); V. Name = "content "; V. Default = new myData (); Root. Variables. Add (v ); Designer. Load (root );   DesienerPanel. Content = designer. View; PropertyPanel. Children. Add (designer. PropertyInspectorView ); }   WorkflowInstance myInstance; Public WorkflowInstance createInstanceFromXamlString (string xaml) { System. Text. UTF8Encoding utf8 = new System. Text. UTF8Encoding (); Byte [] bs = utf8.GetBytes (xaml ); System. IO. MemoryStream memoryStream = new System. IO. MemoryStream (bs ); WorkflowElement activity = WorkflowXamlServices. Load (memoryStream ); WorkflowInstance myInstance = new WorkflowInstance (activity ); Return myInstance; }       Private void Button_Click (object sender, RoutedEventArgs e) { System. Console. Clear (); MyInstance = createInstanceFromXamlString (designer. Text ); MyInstance. OnCompleted = delegate (WorkflowCompletedEventArgs ee) {System. Console. WriteLine ("end ");}; MyInstance. Run (); }     Private void yes_Click (object sender, RoutedEventArgs e) { MyData date = new myData (); Date. Result = ""; Date. Description = tb. Text;   MyInstance. ResumeBookmark ("mywait", date ); }   Private void nextUser_Click (object sender, RoutedEventArgs e) { MyData date = new myData (); Date. Result = "B "; Date. Description = tb. Text; MyInstance. ResumeBookmark ("mywait", date ); } }

 

 

Design Process

Design the following process:

 

 

 

 

 

 

 

 

 

Running instructions