This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

// Define two parameters for use by our workflow.

// Remember!  These must be mapped to identically named

// properties in our workflow class type.

Dictionary parameters = new Dictionary();

parameters.Add("ErrorMessage", "Ack!  Your name is too long!");

parameters.Add("NameLength", 5);

// Now, create a WF instance that represents our type

// and pass in parameters.

WorkflowInstance instance =

workflowRuntime.CreateWorkflow(

typeof(UserDataWFApp.ProcessUsernameWorkflow), parameters);

instance.Start();

waitHandle.WaitOne();

}

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Note

In the preceding code, the values assigned to the 

ErrorMessage

and 

NameLength

dictionary items are

hard-coded. A more dynamic approach is to read these values from a related 

*.config

file, or perhaps from

incoming command-line arguments.

If you try running your program at this point, you will encounter a runtime exception, as you

have yet to associate these incoming values to public properties on your workflow type. Once you

have done so, however, the runtime will invoke them upon workflow creation. After this point,

C H A P T E R   2 6  

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8849CH26.qxd  10/10/07  11:46 AM  Page 932

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you can use these properties to get and set the underlying data values. Here are the relevant updates

to the ProcessUsernameWorkflow class type:

public sealed partial class ProcessUsernameWorkflow : SequentialWorkflowActivity

{

...