Cannot create unknown type '{clr-namespace:Blog.LongRunningWorkflow.Example.Activities}WaitForRequestApproval'.

Question

Hi,

I am facing problem in loading XAML at runtime.

Below is the code please help me.

public void ProcessRequest(Request request) { // Get the workflow instance id to use Guid instanceId = this.requestToInstanceMapping[request.Id];

        // Setup the arguments that are passed to the workflow
        IDictionary<string, object> input = new Dictionary<string, object>();


        input.Add("Request", request);

        using (FileStream fs = new FileStream(@"ProcessRequest.xaml", FileMode.Open))
        {

         // Load the ProcessRequest workflow
         Activity wf = ActivityXamlServices.Load(fs) as Activity;                

        // Create the workflow instance specifying the arguments and instance id            
        WorkflowApplication wapp = new WorkflowApplication(wf, input);
        string persistenceConnectionString = "Data Source=Dev1;Initial Catalog=InstanceStore;User id=sa;password=xxxxxxx;Asynchronous Processing=True";

        SqlWorkflowInstanceStore store = new SqlWorkflowInstanceStore(persistenceConnectionString);
        store.CreateInstanceHandle(instanceId);
        wapp.InstanceStore = store;         

        // When instance is idle unload and persist the isntance
        wapp.Idle = delegate(WorkflowApplicationIdleEventArgs e)
        {          
            wapp.Unload();                
        };           

        // Setup the persistance
        PersistenceProvider persistenceProvider = this.CreatePersistanceProvider(instanceId);
        wapp.Extensions.Add(persistenceProvider);            
        // Start the workflow instance
        wapp.Run();            
        }           
    }