WF4.0 Beta1 WorkflowInvoker

WorkflowInvoker

使用 WorkflowInvoker.Invoke静态方法

public static IDictionary<string, object> Invoke(WorkflowElement workflow);

 

public static IDictionary<string, object> Invoke(WorkflowElement workflow, IDictionary<string, object> inputs);

 

public static IDictionary<string, object> Invoke(WorkflowElement workflow, TimeSpan timeout);

 

public static IDictionary<string, object> Invoke(WorkflowElement workflow, IDictionary<string, object> inputs, TimeSpan timeout);

 

 

例1:传入参数,并得到结果

流程		public sealed class Add : CodeActivity<int> { public InArgument<int> X { get; set; } public InArgument<int> Y { get; set; }   protected override void Execute(CodeActivityContext context) { int x = X.Get(context); int y = Y.Get(context);   context.SetValue(base.Result, x + y); } }
调用		static void Main(string[] args) {   var p= new Dictionary<string, object> { { "X", 1 }, { "Y", 2 }};   IDictionary<string, object> results = WorkflowInvoker.Invoke(new Add(), p); Console.WriteLine( results["Result"]);   Console.ReadLine(); }

 

使用 WorkflowInvoker实例

public WorkflowInvoker(WorkflowElement workflow);

 

public Collection<object> Extensions { get; }

 

public event EventHandler<InvokeCompletedEventArgs> InvokeCompleted;

 

public IAsyncResult BeginInvoke(AsyncCallback callback, object state);

 

public IAsyncResult BeginInvoke(IDictionary<string, object> inputs, AsyncCallback callback, object state);

 

public IAsyncResult BeginInvoke(TimeSpan timeout, AsyncCallback callback, object state);

 

public IAsyncResult BeginInvoke(IDictionary<string, object> inputs, TimeSpan timeout, AsyncCallback callback, object state);

 

public IDictionary<string, object> EndInvoke(IAsyncResult result);

 

public IDictionary<string, object> Invoke();

 

public IDictionary<string, object> Invoke(IDictionary<string, object> inputs);

 

public IDictionary<string, object> Invoke(TimeSpan timeout);

 

public IDictionary<string, object> Invoke(IDictionary<string, object> inputs, TimeSpan timeout);

 

public void InvokeAsync();

 

public void InvokeAsync(IDictionary<string, object> inputs);

 

public void InvokeAsync(object userState);

 

public void InvokeAsync(TimeSpan timeout);

 

public void InvokeAsync(IDictionary<string, object> inputs, object userState);

 

public void InvokeAsync(IDictionary<string, object> inputs, TimeSpan timeout);

 

public void InvokeAsync(TimeSpan timeout, object userState);

 

public void InvokeAsync(IDictionary<string, object> inputs, TimeSpan timeout, object userState);

 

例1:InvokeAsync方法与invokeCompleted事件

 

流程

public sealed class Add : CodeActivity<int> { public InArgument<int> X { get; set; } public InArgument<int> Y { get; set; }   protected override void Execute(CodeActivityContext context) { int x = X.Get(context); int y = Y.Get(context);   context.SetValue(base.Result, x + y); } }

调用

static void Main(string[] args) {   WorkflowInvoker myInvoker = new WorkflowInvoker(new Add());   var p = new Dictionary<string, object> { { "X", 1 }, { "Y", 2 }};   myInvoker.InvokeCompleted += new EventHandler<InvokeCompletedEventArgs>(myInvoker_InvokeCompleted);   myInvoker.InvokeAsync(p);   Console.ReadLine(); }   static void myInvoker_InvokeCompleted(object sender, InvokeCompletedEventArgs e) { Console.WriteLine(e.Outputs["Result"]); }

 

例2:BeginInvoke方法与EndInvoke方法

流程

public sealed class Add : CodeActivity<int> { public InArgument<int> X { get; set; } public InArgument<int> Y { get; set; }   protected override void Execute(CodeActivityContext context) { int x = X.Get(context); int y = Y.Get(context);   context.SetValue(base.Result, x + y); } }

调用

static void Main(string[] args) {   WorkflowInvoker myInvoker = new WorkflowInvoker(new Add());   var p = new Dictionary<string, object> { { "X", 1 }, { "Y", 2 }};   IAsyncResult ir= myInvoker.BeginInvoke(p, new AsyncCallback(callback), myInvoker);   var r = myInvoker.EndInvoke(ir);   System.Console.WriteLine(r["Result"]);   Console.ReadLine(); }       static void callback(IAsyncResult asyncResult) { System.Threading.ManualResetEvent mr = asyncResult.AsyncWaitHandle as System.Threading.ManualResetEvent;   System.Console.WriteLine("callback"); }

 

后面我会写一组

用WorkflowInvoker实现调用子流程的例

与

用WorkflowInvoker以回溯方做流程全路径测试的例子