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Internet Explorer 7 has an enhanced security mode, called protected mode, which works only on Windows Vista. Having that enabled and mind you, it is enabled by default will break your scripts. The problem will manifest as the sites your script tries to navigate to open in new windows. The new windows belong to another Internet Explorer process, and you cannot manipulate those. The application object you originally created will eventually disconnect from the real browser instance, and you may get the dreaded The RPC Server is unavailable error. Internet Explorer s protected mode mandates that opening a site that is in a different security zone than the one the current window is browsing should always open in a new window. That also starts a new browser process; this way, malicious code executing in one security zone does not have the slightest chance of manipulating objects running in another security zone. Unfortunately, that breaks our scripts. We have two ways to fix that: disable protected mode or add the site to our Trusted Sites zone. The first option is the easiest. Just open the Internet Options dialog, go to the Security tab, and uncheck the Enable Protected Mode check box. Figure 19-6 shows the security tab focusing the protected mode check box.

/// <summary> /// Updating the bindings for the DataGridView /// </summary> private void RefreshData() { if (dataGridView1.DataSource == null) { //setup binding for DataGridView the first time dataGridView1.DataSource = new BindingList<Workflow>(); dataGridView1.Columns[0].MinimumWidth = 250; dataGridView1.Columns[1].MinimumWidth = 140; dataGridView1.Columns[2].MinimumWidth = 40; } BindingList<Workflow> bl = (BindingList<Workflow>)dataGridView1.DataSource; foreach (Workflow wf in _workflows.Values) { //make sure the bindingList contains all of the //workflow instances if (!bl.Contains(wf)) { bl.Add(wf); //set the new instance as the current //one in the grid view this.BindingContext[dataGridView1.DataSource].Position = bl.Count - 1; } } dataGridView1.Refresh(); } The UpdateDisplay and UpdateCompletedWorkflow methods both refresh the display by updating the bound collection of Workflow objects. The UpdateDisplay method is invoked by all of the handlers for the workflow runtime event (for example, WorkflowCreated, WorkflowPersisted, WorkflowCompleted). It locates the workflow instance in the internal collection (if it exists) using the private GetWorkflow method. It then updates the status message for the Workflow object. Notice that the code to update the data bound collection is executed on the UI thread. This is important since you can update a UI control only from the thread that created it. The actual code to execute is wrapped in an anonymous delegate in order to keep the code all in one place. The call to Thread.Sleep(1000) is used to slow down the display so that you can actually see the status changes. Each workflow will typically cycle through a number of status changes very quickly, and you would not see those changes without this short delay.

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Once the workflow runtime has been prepared, an instance of the workflow is created and started with this code: WorkflowInstance instance = workflowRuntime.CreateWorkflow(typeof(HelloWorkflow.Workflow1)); instance.Start(); The CreateWorkflow method has several overloaded versions, but this one simply requires the Type of the workflow that you want to create as its only parameter. When a workflow is created, it doesn t begin executing immediately. Instead, a WorkflowInstance object is returned from this method and used to start the execution of the workflow. Finally, the console application suspends execution of the current thread and waits until the AutoResetEvent object is signaled with this code: waitHandle.WaitOne();

Figure 19-6. Internet Explorer s Security settings tab and the protected mode check box Disabling protected mode may be too much for most people. After all, there must have been a real reason the Internet Explorer developers implemented that feature in the first place. If we would not want to compromise our security just for the sake of being able to run a script or two, we could add the sites that we are visiting from our scripts to the Trusted Sites zone. To do that, you must select the Trusted Sites zone in the Security tab shown in Figure 19-6 and click the Sites button. Our scripts will be automating Live.com searches, so we must add two sites to the list: http://www.live.com and http://search.live.com. Figure 19-7 shows how the configuration must look.

As you learned earlier in the chapter, you can use the Web Management Service (WMSvc) when you re using Basic authentication. To do this, you should add the WMsvc provider settings to the msdeploy commands you issued earlier: msdeploy -verb:sync -source:apphostconfig="Contoso.Claims.Web",wmsvc ={your source server name},username={username1},password={password1},

This workflow is trivial and will execute very quickly. But real-world workflows will require much more time to execute. It is vitally important that the host application waits until the workflow has finished. Otherwise, the host application might terminate before the workflow has had a chance to complete all of its activities.

Figure 19-7. The Live.com sites added to the Trusted Sites security zone Note that both sites are added with their http:// protocol URL, and that requires that you uncheck the Require server verification (https:) check box.

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