Databases
StackOverflow2013
Postsdbo
POVisualBasicValue<T>: Access custom classes and its methods\properties
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POVisualBasicValue<T>: Access custom classes and its methods\properties
    primarykey
    data
    text
    <p>Suppose I've a custom class (any class), with its methods and properties:</p> <pre><code>public class Test { public string MyString { get; set; } public bool MyBool { get; set; } public override string ToString() { return "Test Class : " + this.MyString + " - " + MyBool; } } </code></pre> <p>Now I want to move and handle its properties between WF4 activities using <code>VisualBasicValue&lt;T&gt;</code>. For example:</p> <pre><code>public class Program { static void Main(string[] args) { Test testClass = new Test() { MyString = "some string", MyBool = true }; Sequence wf = new Sequence() { Variables = { new Variable&lt;Test&gt;("varName", testClass), }, Activities = { new WriteLine() { Text = new VisualBasicValue&lt;string&gt;("\"Test Class Properties: \" &amp; varName.MyString &amp; \"-\" &amp; varName.MyBool") }, new WriteLine() { Text = new VisualBasicValue&lt;string&gt;("\"Test Class ToString(): \" &amp; varName") } } }; WorkflowInvoker.Invoke(wf); Console.ReadKey(); } } </code></pre> <p>This code compiles without a problem. Variable can handle any kind of class, but while running it seems to complain of the custom class usage. Some exception like:</p> <pre><code>The following errors were encountered while processing the workflow tree: 'Literal&lt;Test&gt;': Literal only supports value types and the immutable type System.String. The type WorkflowConsoleApplication3.Test cannot be used as a literal. 'VisualBasicValue&lt;String&gt;': Compiler error(s) encountered processing expression ""Test Class ToString(): " &amp; varName". </code></pre> <p>Operator '&amp;' is not defined for types 'String' and 'WorkflowConsoleApplication3.Test'.</p> <p>I've read that you can do something along this lines:</p> <pre><code>VisualBasicSettings vbSettings = new VisualBasicSettings(); vbSettings.ImportReferences.Add(new VisualBasicImportReference() { Assembly = typeof(Test).Assembly.GetName().Name, Import = typeof(Test).Namespace }); // construct workflow VisualBasic.SetSettings(wf, vbSettings); WorkflowInvoker.Invoke(wf); </code></pre> <p>But that doesn't seems to do the trick. Any help?</p> <p>PS: At the same topic, can someone give me a little example how\where to use <code>VisualBasicReference&lt;T&gt;' with</code>OutArgument`? It seems something I can use at a later stage but I'm to find any kind of example.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJoao
    1. USJoao
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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