Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I ran into an identical issue working with non-dynamic activities and have now checked what is required to get this to work:</p> <h3>Summary</h3> <ol> <li><p>Add a reference to <code>System.Xaml</code></p></li> <li><p>Move <code>MailAddress</code> to a different namespace.</p></li> <li><p>Add some information to the <code>Dynamic Activity</code> about where your classes are coming from:</p></li> </ol> <pre><code>var impl = new AttachableMemberIdentifier(typeof(TextExpression), "NamespacesForImplementation"); var namespaces = new List&lt;string&gt; { typeof(MailAddress).Namespace }; TextExpression.SetReferencesForImplementation(dynamicActivity, new AssemblyReference { Assembly = typeof(MailAddress).Assembly }); AttachablePropertyServices.SetProperty(dynamicActivity, impl, namespaces); </code></pre> <p>To get at this answer I needed to dig around in the <code>TextExpressionCompiler</code> source so there might be something a lot more elegant.</p> <hr> <h3>Non-Dynamic Activities</h3> <p>If you are not using dynamic activities the call to <code>CompileExpressions</code> would change as described here: <a href="http://msdn.microsoft.com/en-us/library/jj591618.aspx">http://msdn.microsoft.com/en-us/library/jj591618.aspx</a>.</p> <p>Adding information to the activity would be modified by removing the "ForImplementation" parts:</p> <pre><code>var impl = new AttachableMemberIdentifier(typeof(TextExpression), "Namespaces"); var namespaces = new List&lt;string&gt; { typeof(MailAddress).Namespace }; TextExpression.SetReferences(nonDynamicActivity, new AssemblyReference { Assembly = typeof(MailAddress).Assembly }); AttachablePropertyServices.SetProperty(nonDynamicActivity, impl, namespaces); </code></pre> <hr> <h3>Working code</h3> <pre><code>using System; using System.Activities; using System.Activities.Expressions; using System.Activities.Statements; using System.Activities.XamlIntegration; using System.Collections.Generic; using System.Linq; using System.Xaml; using ExternalNamespace; using Microsoft.CSharp.Activities; namespace CSharpExpression { class Program { static void Main() { var errorCodeWorkflow = new DynamicActivity { Name = "MyScenario.MyDynamicActivity3", Properties = { new DynamicActivityProperty { Name = "Address", Type = typeof(InArgument&lt;MailAddress&gt;), }, }, Implementation = () =&gt; new WriteLine { Text = new CSharpValue&lt;String&gt; { ExpressionText = "\"MyDynamicActivity \" + Address.DisplayName" } } }; var impl = new AttachableMemberIdentifier(typeof(TextExpression), "NamespacesForImplementation"); var namespaces = new List&lt;string&gt; { typeof(MailAddress).Namespace }; TextExpression.SetReferencesForImplementation(errorCodeWorkflow, new AssemblyReference { Assembly = typeof(MailAddress).Assembly }); AttachablePropertyServices.SetProperty(errorCodeWorkflow, impl, namespaces); CompileExpressions(errorCodeWorkflow); WorkflowInvoker.Invoke(errorCodeWorkflow, new Dictionary&lt;String, Object&gt; { { "Address", new MailAddress { DisplayName = "TestDisplayName" } } }); } static void CompileExpressions(DynamicActivity dynamicActivity) { var activityName = dynamicActivity.Name; var activityType = activityName.Split('.').Last() + "_CompiledExpressionRoot"; var activityNamespace = string.Join(".", activityName.Split('.').Reverse().Skip(1).Reverse()); var settings = new TextExpressionCompilerSettings { Activity = dynamicActivity, Language = "C#", ActivityName = activityType, ActivityNamespace = activityNamespace, RootNamespace = "CSharpExpression", GenerateAsPartialClass = false, AlwaysGenerateSource = true, ForImplementation = true }; var results = new TextExpressionCompiler(settings).Compile(); if (results.HasErrors) { throw new Exception("Compilation failed."); } var compiledExpressionRoot = Activator.CreateInstance(results.ResultType, new object[] { dynamicActivity }) as ICompiledExpressionRoot; CompiledExpressionInvoker.SetCompiledExpressionRootForImplementation(dynamicActivity, compiledExpressionRoot); } } } namespace ExternalNamespace { public class MailAddress { public String Address { get; set; } public String DisplayName { get; set; } } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POWF 4.5. Using C# expressions with external class references
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USVasily Sliounaiev
    1. USVasily Sliounaiev
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POWF 4.5. Using C# expressions with external class references
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COIt works. Thank a lot!
      singulars
      1. PO
      1. USssemichev
    2. COVasily, could you take a look at this question? http://stackoverflow.com/questions/16193628/wf-c-sharp-expressions-inside-of-nativeactivity
      singulars
      1. PO
      1. USssemichev
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload