이 워크 플로를 호출하려면 어떻게해야합니까?

static void Main(string[] args) 
{ 
     WorkflowDbContext db = new WorkflowDbContext(); 

     var workflowFromDb = db.Workflows.Find("1"); 

     string workFlowDefinition = workflowFromDb.WorkflowDefinition; 

     ActivityXamlServicesSettings settings = new ActivityXamlServicesSettings 
     { 
      CompileExpressions = true 
     }; 
}

나는이 때 :이 워크 플로를 호출하려면 어떻게해야합니까?

DynamicActivity<int> wf = ActivityXamlServices.Load(new StringReader(workFlowDefinition), settings) as DynamicActivity<int>;

내가 얻을이 오류 :

CacheMetadata for activity 'PeakTriggerActivities.SalesToService' threw 'System.Xaml.XamlObjectWriterException: Cannot create unknown type '{clr-namespace:PeakTriggerActivities}GetTouchPoint'.

나는 또한이 시도했지만, WF 다만이 경우에는 null 값이된다 :

//Encoding this way since xml file shows utf-16 
MemoryStream mStream = new MemoryStream(Encoding.Unicode.GetBytes(workFlowDefinition)); 
//Also tried LocalAssembly = System.Reflection.Assembly.GetExecutingAssembly() instead of LocalAssembly = typeof(GetTouchPoint).Assembly 
DynamicActivity<int> wf = ActivityXamlServices.Load(new XamlXmlReader(mStream, new XamlXmlReaderSettings { LocalAssembly = typeof(GetTouchPoint).Assembly }), settings) as DynamicActivity<int>;

을

이것은 workFlowDefinition 문자열에 포함되어 있으며 GetTouchPoint라는 클래스는 다음과 같은 프로젝트에 있습니다. program.cs에서이 주요 방법 :

<?xml version="1.0" encoding="utf-16"?> 
<Activity mc:Ignorable="sap sap2010 sads" x:Class="PeakTriggerActivities.SalesToService"  sap2010:ExpressionActivityEditor.ExpressionActivityEditor="C#"  sap2010:WorkflowViewState.IdRef="PeakTriggerActivities.SalesToService_1" 
xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities" 
xmlns:local="clr-namespace:PeakTriggerActivities" 
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
xmlns:mca="clr-namespace:Microsoft.CSharp.Activities;assembly=System.Activities" 
xmlns:sads="http://schemas.microsoft.com/netfx/2010/xaml/activities/debugger" 
xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation" 
xmlns:sap2010="http://schemas.microsoft.com/netfx/2010/xaml/activities/presentation" 
xmlns:scg="clr-namespace:System.Collections.Generic;assembly=mscorlib" 
xmlns:sco="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib" 
xmlns:t="clr-namespace:TouchPointModels;assembly=TouchPointModels" 
xmlns:t1="clr-namespace:TouchPointServices;assembly=TouchPointService" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> 
    <TextExpression.NamespacesForImplementation> 
    <sco:Collection x:TypeArguments="x:String"> 
     <x:String>System</x:String> 
     <x:String>System.Collections.Generic</x:String> 
     <x:String>System.Data</x:String> 
     <x:String>System.Linq</x:String> 
     <x:String>System.Text</x:String> 
     <x:String>TouchPointModels</x:String> 
    </sco:Collection> 
    </TextExpression.NamespacesForImplementation> 
    <TextExpression.ReferencesForImplementation> 
    <sco:Collection x:TypeArguments="AssemblyReference"> 
     <AssemblyReference>Microsoft.CSharp</AssemblyReference> 
     <AssemblyReference>PresentationCore</AssemblyReference> 
     <AssemblyReference>PresentationFramework</AssemblyReference> 
     <AssemblyReference>System</AssemblyReference> 
     <AssemblyReference>System.Activities</AssemblyReference> 
     <AssemblyReference>System.Activities.Presentation</AssemblyReference> 
     <AssemblyReference>System.Core</AssemblyReference> 
     <AssemblyReference>System.Data</AssemblyReference> 
     <AssemblyReference>System.Runtime.Serialization</AssemblyReference> 
     <AssemblyReference>System.ServiceModel</AssemblyReference> 
     <AssemblyReference>System.ServiceModel.Activities</AssemblyReference> 
     <AssemblyReference>System.ServiceModel.Channels</AssemblyReference> 
     <AssemblyReference>System.Xaml</AssemblyReference> 
     <AssemblyReference>System.Xml</AssemblyReference> 
     <AssemblyReference>System.Xml.Linq</AssemblyReference> 
     <AssemblyReference>WindowsBase</AssemblyReference> 
     <AssemblyReference>TouchPointModels</AssemblyReference> 
     <AssemblyReference>TouchPointService</AssemblyReference> 
     <AssemblyReference>mscorlib</AssemblyReference> 
     <AssemblyReference>PeakTriggerActivities</AssemblyReference> 
    </sco:Collection> 
    </TextExpression.ReferencesForImplementation> 
    <Sequence sap2010:WorkflowViewState.IdRef="Sequence_1"> 
    <Sequence.Variables> 
     <Variable x:TypeArguments="x:String" Name="varTouchPointCode" /> 
     <Variable x:TypeArguments="t:TouchPoint" Name="varTouchPoint" /> 
     <Variable x:TypeArguments="x:Int32" Name="varProgramNumber" /> 
    </Sequence.Variables> 
    <local:GetTouchPoint Text="{x:Null}" sap2010:WorkflowViewState.IdRef="GetTouchPoint_1"  InProgramNumber="1" InTouchPointCode="SATM"> 
     <local:GetTouchPoint.OutProgramNumber> 
     <OutArgument x:TypeArguments="x:Int32"> 
      <mca:CSharpReference x:TypeArguments="x:Int32">varProgramNumber</mca:CSharpReference> 
     </OutArgument> 
     </local:GetTouchPoint.OutProgramNumber> 
     <local:GetTouchPoint.OutTouchPoint> 
     <OutArgument x:TypeArguments="t:TouchPoint"> 
      <mca:CSharpReference x:TypeArguments="t:TouchPoint">varTouchPoint</mca:CSharpReference> 
     </OutArgument> 
     </local:GetTouchPoint.OutTouchPoint> 
     <local:GetTouchPoint.OutTouchPointCode> 
     <OutArgument x:TypeArguments="x:String"> 
      <mca:CSharpReference x:TypeArguments="x:String">varTouchPointCode</mca:CSharpReference> 
     </OutArgument> 
     </local:GetTouchPoint.OutTouchPointCode> 
    </local:GetTouchPoint> 
    <If sap2010:WorkflowViewState.IdRef="If_1"> 
     <If.Condition> 
     <InArgument x:TypeArguments="x:Boolean"> 
      <mca:CSharpValue x:TypeArguments="x:Boolean">varTouchPoint == null</mca:CSharpValue> 
     </InArgument> 
     </If.Condition> 
     <If.Then> 
     <WriteLine sap2010:WorkflowViewState.IdRef="WriteLine_1"> 
      <InArgument x:TypeArguments="x:String"> 
      <mca:CSharpValue x:TypeArguments="x:String">"Cannot find Touchpoint Code :" +  varTouchPointCode</mca:CSharpValue> 
      </InArgument> 
     </WriteLine> 
     </If.Then> 
     <If.Else> 
     <Sequence sap2010:WorkflowViewState.IdRef="Sequence_2"> 
      <WriteLine sap2010:WorkflowViewState.IdRef="WriteLine_3"> 
      <InArgument x:TypeArguments="x:String"> 
       <mca:CSharpValue x:TypeArguments="x:String">"Processing Touchpoint: " + varTouchPoint.Code + " - " + varTouchPoint.Name</mca:CSharpValue> 
      </InArgument> 
      </WriteLine> 
      <t1:ProcessTouchPoint InTouchPoint="{x:Null}" Success="{x:Null}" Text="{x:Null}" sap2010:WorkflowViewState.IdRef="ProcessTouchPoint_1"> 
      <t1:ProcessTouchPoint.InProgramNumber> 
       <InArgument x:TypeArguments="x:Int32"> 
       <mca:CSharpValue x:TypeArguments="x:Int32">varProgramNumber</mca:CSharpValue> 
       </InArgument> 
      </t1:ProcessTouchPoint.InProgramNumber> 
      <t1:ProcessTouchPoint.InTouchPointCode> 
       <InArgument x:TypeArguments="x:String"> 
       <mca:CSharpValue x:TypeArguments="x:String">varTouchPointCode</mca:CSharpValue> 
       </InArgument> 
      </t1:ProcessTouchPoint.InTouchPointCode> 
      </t1:ProcessTouchPoint> 
     </Sequence> 
     </If.Else> 
    </If> 
    <sads:DebugSymbol.Symbol>d0tDOlxwcm9qZWN0c1xQZWFrVHJpZ2dlckFjdGl2aXRpZXNcUGVha1RyaWdnZXJBY3Rpdml0aWVzXFNhbGVzVG9TZXJ2aWNlLnhhbWwRMANrDgIBATYFRhsCARtHBWkKAgECNoEBNocBAgEpOQs5YAIBJUMLQ2ICASE+Cz5iAgEdNmw2bwIBHEoLSl8CAQNOCVIVAgEWVQlnFAIBB1ANUH4CARdWC1oXAgERWwtmIgIBCFgPWJgBAgESYxFjYAIBDV4RXl4CAQk= </sads:DebugSymbol.Symbol> 
    </Sequence> 
    <sap2010:WorkflowViewState.ViewStateManager> 
    <sap2010:ViewStateManager> 
     <sap2010:ViewStateData Id="GetTouchPoint_1" sap:VirtualizedContainerService.HintSize="469,22" /> 
     <sap2010:ViewStateData Id="WriteLine_1" sap:VirtualizedContainerService.HintSize="211,62" /> 
     <sap2010:ViewStateData Id="WriteLine_3" sap:VirtualizedContainerService.HintSize="211,62" /> 
     <sap2010:ViewStateData Id="ProcessTouchPoint_1" sap:VirtualizedContainerService.HintSize="211,22" /> 
     <sap2010:ViewStateData Id="Sequence_2" sap:VirtualizedContainerService.HintSize="233,248"> 
     <sap:WorkflowViewStateService.ViewState> 
      <scg:Dictionary x:TypeArguments="x:String, x:Object"> 
      <x:Boolean x:Key="IsExpanded">True</x:Boolean> 
      </scg:Dictionary> 
     </sap:WorkflowViewStateService.ViewState> 
     </sap2010:ViewStateData> 
     <sap2010:ViewStateData Id="If_1" sap:VirtualizedContainerService.HintSize="469,398" /> 
     <sap2010:ViewStateData Id="Sequence_1" sap:VirtualizedContainerService.HintSize="491,584"> 
     <sap:WorkflowViewStateService.ViewState> 
      <scg:Dictionary x:TypeArguments="x:String, x:Object"> 
      <x:Boolean x:Key="IsExpanded">True</x:Boolean> 
      </scg:Dictionary></sap:WorkflowViewStateService.ViewState> 
</sap2010:ViewStateData> 
<sap2010:ViewStateData Id="PeakTriggerActivities.SalesToService_1" sap:VirtualizedContainerService.HintSize="531,664" /> 
</sap2010:ViewStateManager> 
</sap2010:WorkflowViewState.ViewStateManager> 
</Activity>

출처

2015-01-15 IQtheMC

어떤 이유로이 방법이 효과적입니다. 유일한 차이점은 XamlXmlReader가 스트림을 첫 번째 인수로 받아들이더라도 실제로 스트림을 전달할 수 없으며 대신 StringReader 개체를 전달해야한다는 것입니다.

WorkflowDbContext db = new WorkflowDbContext(); 
var workflowFromDb = db.Workflows.Find("1"); 
ActivityXamlServicesSettings activitySettings = new ActivityXamlServicesSettings 
{ 
    CompileExpressions = true 
}; 
XamlXmlReaderSettings xamlReaderSettings = new XamlXmlReaderSettings { LocalAssembly = typeof(GetTouchPoint).Assembly }; 
XamlReader xamlReader = new XamlXmlReader(new StringReader(workflowFromDb.WorkflowDefinition), xamlReaderSettings); 
var wf = ActivityXamlServices.Load(xamlReader, activitySettings); 
var result = WorkflowInvoker.Invoke(wf);

출처

2015-01-16 00:59:05 IQtheMC

아마도 이것은 실제 문제와 우연히 만나는 해결책은 아닙니다 ... 일어나지 않았습니까? 어쨌든, 어셈블리 바인딩 로그를 사용하여 향후 이와 같은 문제를 디버깅해야합니다 (자세한 내용은 fuslogvw 검색). – Will

이 워크 플로를 호출하려면 어떻게해야합니까?

답변

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