基于XAML文件名得到Activity

static Activity getActivity(string filePathName)

{

string valueString = "";

using (System.IO.FileStream fileStream = new System.IO.FileStream(filePathName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))

{

using (System.IO.StreamReader streamReader = new System.IO.StreamReader(fileStream))

{

valueString = streamReader.ReadToEnd();

}

}

System.IO.StringReader stringReader = new System.IO.StringReader(valueString);

Activity activity = System.Activities.XamlIntegration.ActivityXamlServices.Load(stringReader);

WorkflowInspectionServices.CacheMetadata(activity);

return activity;

}

GetActivities方式

static void printActivityTree(Activity activity,string tag)

{

Console.WriteLine(tag + "{0},type:{1}", activity.DisplayName, activity.GetType());

System.Collections.Generic.IEnumerator<Activity> list = WorkflowInspectionServices.GetActivities(activity).GetEnumerator();

while (list.MoveNext())

{

printActivityTree(list.Current," "+ tag );

}

}

递归方式

static void printActivityStruce(Activity activity, string tag)

{

System.Console.WriteLine(tag + "{0},Type:{1}", activity.DisplayName, activity.GetType());

//如果是表达式

VisualBasicValue<string> a = activity as VisualBasicValue<string>;

if (a != null)

{

System.Console.WriteLine(tag + a.ExpressionText);

}

//如果是[DynamicActivity]

DynamicActivity dynamicActivity = activity as DynamicActivity;

if (dynamicActivity != null)

{

System.Console.WriteLine(tag + " Properties:");

foreach (var item in dynamicActivity.Properties)

{

System.Console.WriteLine(tag + " Name:{0}, Type:{1}", item.Name, item.Type);

}

System.Console.WriteLine(tag + " Implementation:");

tag = tag + " ";

printActivityStruce(dynamicActivity.Implementation(), tag);

}

//如果是[Sequence]

Sequence sequence = activity as Sequence;

if (sequence != null)

{

System.Console.WriteLine(tag + " Variables :");

foreach (var item in sequence.Variables)

{

System.Console.WriteLine(tag + " Name:{0}, Type:{1}, Default:{2}", item.Name, item.Type, item.Default);

}

System.Console.WriteLine(tag + " Activities:");

foreach (var item in sequence.Activities)

{

tag = tag + " ";

printActivityStruce(item, tag);

}

}

}

static void showTestAWorkflow()

{

Activity wf = getActivity("testAWorkflow.xaml");

printActivityTree(wf, "");

System.Console.WriteLine("=======================");

printActivityStruce(wf, "");

}

static void showTestBWorkflow()

{

Activity wf = getActivity("testBWorkflow.xaml");

printActivityTree(wf, "");

System.Console.WriteLine("=======================");

printActivityStruce(wf, "");

}

static void showTestCWorkflow()

{

Activity wf = getActivity("testCWorkflow.xaml");

printActivityTree(wf, "");

System.Console.WriteLine("=======================");

printActivityStruce(wf, "");

}

static void showTestDWorkflow()

{

Activity wf = getActivity("testDWorkflow.xaml");

printActivityTree(wf, "");

System.Console.WriteLine("=======================");

printActivityStruce(wf, "");

}

public sealed class muActivity : Activity

{

protected override Func<Activity> Implementation

{

get

{

return getActivity;

}

set

{

base.Implementation = value;

}

}

Activity getActivity()

{

return new WriteLine { DisplayName = "wxwinter" };

}

}

FileStream fs = new FileStream("Service1.xamlx", FileMode.Open);

WorkflowService wfs = (WorkflowService)XamlServices.Load(fs);

printActivityTree(wf,"|--");

static void printActivityID(Activity activity, string tag)

{

Console.WriteLine(tag + "{0},{1}", activity.Id, activity.DisplayName);

System.Collections.Generic.IEnumerator<Activity> list = WorkflowInspectionServices.GetActivities(activity).GetEnumerator();

while (list.MoveNext())

{

printActivityID(list.Current, " " + tag);

}

}

static void findActivityByID()

{

Activity wf = getActivity("testAWorkflow.xaml");

printActivityID(wf, "");

System.Console.WriteLine("=======================");

Activity act= WorkflowInspectionServices.Resolve(wf, "1.5");

Console.WriteLine("{0},{1}", act.Id, act.DisplayName);

}

Activity

public sealed class myActivityA : CodeActivity

{

public InArgument<string> myText { get; set; }

protected override void CacheMetadata(CodeActivityMetadata metadata)

{

myText = new VisualBasicValue<string> { ExpressionText = "myIn" };

base.CacheMetadata(metadata);

}

protected override void Execute(CodeActivityContext context)

{

string text = context.GetValue(this.myText);

System.Console.WriteLine("myActivityA:" + text);

}

}

static void testCacheMetadata()

{

try

{

System.Console.WriteLine("验证 myActivityA");

WorkflowInspectionServices.CacheMetadata(new myActivityA());

System.Console.WriteLine("验证 myActivityA 通过");

}

catch(System.Exception ex)

{

System.Console.WriteLine(ex.Message);

}

System.Console.WriteLine("/====================================================================");

DynamicActivity dynamicActivity = new DynamicActivity();

dynamicActivity.Properties.Add(new DynamicActivityProperty

{

Name = "myIn",

Type = typeof(InArgument<string>),

Value = new InArgument<string>()

});

dynamicActivity.Implementation =()=>new myActivityA();

try

{

System.Console.WriteLine("验证 dynamicActivity");

WorkflowInspectionServices.CacheMetadata(dynamicActivity);

System.Console.WriteLine("验证 dynamicActivity 通ª过");

}

catch (System.Exception ex)

{

System.Console.WriteLine(ex.Message);

}

}