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Exam : Microsoft 70-504
Title : TS: Microsoft .NET Framework 3.5 -C Windows Workflow Foundation


1. Question
You create an application in which users design simple sequential workflows. The designs are stored as XOML in a SQL database. You need to start one of these sequential workflows from within your own workflow.
What should you do?
A. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of the WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the workflowType parameter.
B. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the XmlReader and workflowDefinitionReader parameters.
C. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of the WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the workflowType, Dictionary<string,Object> namedArgumentValues, and Guid instanceId parameters.
D. Include and configure an InvokeWorkflow activity
Answer: B

2. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5. The application contains a state workflow.
You write the following code segment.
WorkflowRuntime runtime = new WorkflowRuntime();
WorkflowInstance instance = runtime.CreateWorkflow(
?typeof(DynamicUpdateWorkflow));
instance.Start();
StateMachineWorkflowInstance smwi =
?new StateMachineWorkflowInstance(runtime,
?instance.InstanceId);
A dependency property named Status is defined in this workflow.
The value of a variable named amount is used to set the state of the workflow.
You need to ensure that the host application changes the state of the workflow on the basis of the value of the amount variable.
What are the two possible code segments that you can use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. if (amount >= 1000)
?smwi.SetState("HighValueState");
else
?smwi.SetState("LowValueState");
B. if (amount >= 1000)
?smwi.StateMachineWorkflow.SetValue
?(DynamicUpdateWorkflow.StatusProperty,"HighValueState")
else
?smwi.StateMachineWorkflow.SetValue
?(DynamicUpdateWorkflow.StatusProperty, "LowValueState");
C. if (amount >= 1000)
?instance.GetWorkflowDefinition().SetValue
?(DynamicUpdateWorkflow.StatusProperty,"HighValueState");
else
?instance.GetWorkflowDefinition().SetValue
?(DynamicUpdateWorkflow.StatusProperty,"LowValueState");
D. if (amount >= 1000)
{
}
else
{
}
Answer: A AND D

3. Question
You create an application in which users design simple sequential workflows. The designs are stored as XOML in a SQL database. You need to start one of these sequential workflows from within your own workflow.
What should you do?
A. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of the WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the workflowType parameter.
B. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the XmlReader and workflowDefinitionReader parameters.
C. Include a custom activity with a code segment that includes an invocation to the CreateWorkflow method of the WorkflowRuntime class and then starts the workflow. The signature of the CreateWorkflow method invoked uses only the workflowType, Dictionary<string,Object> namedArgumentValues, and Guid instanceId parameters.
D. Include and configure an InvokeWorkflow activity
Answer: B

4. Question
You are writing a sequential console workflow that consists of a delay activity and a code activity, as shown in the exhibit. (Click the Exhibit button for the sequential console workflow image.)
In the execution code of the second activity, you try to modify the workflow as follows:
Private Sub delayActivity_InitializeTimeoutDuration(ByVal sender As System.Object, ByVal e As System.EventArgs)
Console.Title = "Modifiability of a Workflow"
Console.WriteLine("Wait ...")
End Sub
Private Sub codeActivity_ExecuteCode(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim delay As DelayActivity = CType(sender, DelayActivity)
Console.WriteLine(delay.Name)
Dim workflowChanges As New WorkflowChanges(Me)
Dim codeActivity As New CodeActivity()
codeActivity.Name = "codeActivity2"
AddHandler codeActivity.ExecuteCode, AddressOf Me.codeActivity2_ExecuteCode
workflowChanges.TransientWorkflow.Activities.Add(codeActivity)
Me.ApplyWorkflowChanges(workflowChanges)
End Sub
Private Sub codeActivity2_ExecuteCode(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim codeActivity As CodeActivity = CType(sender, CodeActivity)
Console.WriteLine(codeActivity.Name)
Console.ReadLine()
End Sub
You also have set the modifiability of the workflow to a code condition that is set to the following function:
Private Sub UpdateCondition(ByVal sender As System.Object, ByVal e As ConditionalEventArgs)
If (TimeSpan.Compare(Me.delayActivity.TimeoutDuration, New TimeSpan(0, 0, 5)) > 0) Then
e.Result = False
Else
e.Result = True
End If
End Sub
Which code segment should you use to handle the exception?
A. workflowChanges.TransientWorkflow.Activities.Add(codeActivity)
Try
Me.ApplyWorkflowChanges(workflowChanges)
Catch ex As ArgumentOutOfRangeException
Console.WriteLine(ex.GetType().ToString())
Console.ReadLine()
End Try
B. workflowChanges.TransientWorkflow.Activities.Add(codeActivity)
Try
Me.ApplyWorkflowChanges(workflowChanges)
Catch ex As InvalidProgramException
Console.WriteLine(ex.GetType().ToString())
Console.ReadLine()
End Try
C. workflowChanges.TransientWorkflow.Activities.Add(codeActivity)
Try
Me.ApplyWorkflowChanges(workflowChanges)
Catch ex As InvalidOperationException
Console.WriteLine(ex.GetType().ToString())
Console.ReadLine()
End Try
D. workflowChanges.TransientWorkflow.Activities.Add(codeActivity)
Try
Me.ApplyWorkflowChanges(workflowChanges)
Catch ex As OverflowException
Console.WriteLine(ex.GetType().ToString())
Console.ReadLine()
End Try
Answer: C

5. Question
A custom activity defined in an assembly named LitwareActivities is defined as follows:
Namespace LitwareActivities
Public Class WriteLineActivity
Inherits Activity
Protected Overrides Function Execute(ByVal executionContext As System.Workflow.ComponentModel.ActivityExecutionContext) _ As System.Workflow.ComponentModel.ActivityExecutionStatus
Console.WriteLine(Message)
Return ActivityExecutionStatus.Closed
End Function
Private aMessage As String
Public Property Message() As String
Get
Return aMessage
End Get
Set(ByVal value As String)
aMessage = value
End Set
End Property
End Class
End Namespace
You need to create a sequential workflow where the execution path can be generated on the fly by an application.
Which XML code segment should you use?
A. <SequentialWorkflowActivity
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</SequentialWorkflowActivity>
B. <Workflow
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</Workflow>
C. <Workflow
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
class:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</Workflow>
D. <SequentialWorkflowActivity
class:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</SequentialWorkflowActivity>
Answer: A

6. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5.
The application uses a markup-only workflow.
The workflow will also require the use of a code-beside file.
The following code fragment is implemented in XAML.
<SequentialWorkflowActivity
x:Class="ProcessNewCustomer" Name="ProcessCustomer" xmlns=
"http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
</SequentialWorkflowActivity>
You need to create a class declaration to implement the custom code.
Which code segment should you use?
A. public partial class ProcessNewCustomer
? : SequentialWorkflowActivity
{
}
B. public class ProcessNewCustomer
? : SequentialWorkflowActivity
{
}
C. public class ProcessNewCustomerCode
? : ProcessNewCustomer
{
}
D. public partial class ProcessCustomer
? : SequentialWorkflowActivity
{
}
Answer: A

7. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5. You use the state machine workflow in the application.
You plan to implement a mechanism that allows a host application to query a state machine workflow instance that is currently executing.
You write the following code segment. (Line numbers are included for reference only.)
01 WorkflowRuntime runtime = new WorkflowRuntime();
02 WorkflowInstance instance =
03 ?runtime.CreateWorkflow(typeof(Workflow1));
04 instance.Start();
05
You need to identify the current state of the workflow.
Which code segment should you insert at line 05?
A. string currentstate =
?instance.GetWorkflowDefinition().ToString();
B. string currentstate =
?instance.GetWorkflowDefinition().ExecutionStatus.ToString();
C. StateMachineWorkflowInstance smwi =
?new StateMachineWorkflowInstance(runtime, instance.InstanceId);
string currentstate = smwi.StateHistory[0];
D. StateMachineWorkflowInstance smwi =
?new StateMachineWorkflowInstance(runtime, instance.InstanceId);
string currentstate = smwi.CurrentStateName;
Answer: D

8. Question
You use a built-in tracking service to track specific workflow parameters.
You need to check whether the workflow parameters have been stored in the tracking database.
What should you do? (Each correct answer presents part of a solution. Choose two.)
A. Display the contents of the WorkflowInstance table of the tracking database.
B. Include the SqlTrackingQuery class in a code segment to retrieve tracked workflows and SqlTrackingWorkflowInstance class to inspect them.
C. Use the ActivityTrackingLocation class to determine if the value has been set to a database.
D. Display the contents of the TrackingDataItem table of the tracking database.
Answer: B AND D

9. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5.
The application uses a markup-only workflow.
The workflow will also require the use of a code-beside file.
The following code fragment is implemented in XAML.
<SequentialWorkflowActivity
x:Class="ProcessNewCustomer" Name="ProcessCustomer" xmlns=
"http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
</SequentialWorkflowActivity>
You need to create a class declaration to implement the custom code.
Which code segment should you use?
A. Partial Public Class ProcessNewCustomer
End Class
B. Public Class ProcessNewCustomer
End Class
C. Public Class ProcessNewCustomerCode
End Class
D. Partial Public Class ProcessCustomer
End Class
Answer: A

10. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5. The application contains a state workflow.
You write the following code segment.
Dim amount As Integer = 10
Dim runtime As New WorkflowRuntime()
Dim instance As WorkflowInstance = _
?runtime.CreateWorkflow(GetType(DynamicUpdateWorkflow))
instance.Start()
Dim smwi As New StateMachineWorkflowInstance(runtime, _
?instance.InstanceId)
A dependency property named Status is defined in this workflow.
The value of a variable named amount is used to set the state of the workflow.
You need to ensure that the host application changes the state of the workflow on the basis of the value of the amount variable.
What are the two possible code segments that you can use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. If amount >= 1000 Then
Else
End If
B. If amount >= 1000 Then
Else
End If
C. If amount >= 1000 Then
Else
End If
D. If amount >= 1000 Then
Else
End If
Answer: A AND D

11. Question
You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5. You use the state machine workflow in the application.
You plan to implement a mechanism that allows a host application to query a state machine workflow instance that is currently executing.
You write the following code segment. (Line numbers are included for reference only.)
01 Dim runtime As New WorkflowRuntime()
02 Dim instance As WorkflowInstance = _
03 ?runtime.CreateWorkflow(GetType(Workflow1))
04 instance.Start()
05
You need to identify the current state of the workflow.
Which code segment should you insert at line 05?
A. Dim currentstate As String = instance.GetWorkflowDefinition().ToString
B. Dim currentstate As String = _
?instance.GetWorkflowDefinition().ExecutionStatus.ToString
C. Dim smwi As New StateMachineWorkflowInstance(runtime, _
?instance.InstanceId)
Dim currentstate As String = smwi.StateHistory(0)
D. Dim smwi As New StateMachineWorkflowInstance(runtime, _
?instance.InstanceId)
Dim currentstate As String = smwi.CurrentStateName
Answer: D

12. Question
You use a built-in tracking service to track specific workflow parameters.
You need to check whether the workflow parameters have been stored in the tracking database.
What should you do? (Each correct answer presents part of a solution. Choose two.)
A. Display the contents of the WorkflowInstance table of the tracking database.
B. Include the SqlTrackingQuery class in a code segment to retrieve tracked workflows and SqlTrackingWorkflowInstance class to inspect them.
C. Use the ActivityTrackingLocation class to determine if the value has been set to a database.
D. Display the contents of the TrackingDataItem table of the tracking database.
Answer: B AND D

13. Question
A custom activity defined in an assembly named LitwareActivities is defined as follows:
namespace LitwareActivities
{
public class WriteLineActivity : Activity
{
protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
{
Console.WriteLine(Message);
return ActivityExecutionStatus.Closed;
}
private string _message;
public string Message
{
get { return _message; }
set { _message = value; }
}
...
}
}
You need to create a sequential workflow where the execution path can be generated on the fly by an application.
Which XML code segment should you use?
A. <SequentialWorkflowActivity
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</SequentialWorkflowActivity>
B. <Workflow
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</Workflow>
C. <Workflow
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
class:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</Workflow>
D. <SequentialWorkflowActivity
class:Litware="clr-namespace:LitwareActivities;assembly=LitwareActivities">
<Litware:WriteLineActivity Message="Hello, WF"/>
</SequentialWorkflowActivity>
Answer: A

14. You are writing a sequential console workflow that consists of a delay activity and a code activity, as shown in the exhibit. (Click the Exhibit button for the sequential console workflow image)
In the execution code of the second activity, you try to modify the workflow as follows:
private void codeActivity_ExecuteCode(object sender, EventArgs e)
{
CodeActivity delay = sender as CodeActivity;
Console.WriteLine(delay.Name);
WorkflowChanges workflowChanges = new WorkflowChanges(this);
CodeActivity codeActivity = new CodeActivity();
codeActivity.Name = "codeActivity2";
codeActivity.ExecuteCode += new EventHandler(codeActivity2_ExecuteCode);
workflowChanges.TransientWorkflow.Activities.Add(codeActivity);
this.ApplyWorkflowChanges(workflowChanges);
}
private void codeActivity2_ExecuteCode(object sender, EventArgs e)
{
CodeActivity codeActivity = sender as CodeActivity;
Console.WriteLine(codeActivity.Name);
Console.ReadLine();
}
You also have set the modifiability of the workflow to a code condition that is set to the following function:
private void UpdateCondition(object sender, ConditionalEventArgs e)
{
if (TimeSpan.Compare(this.delayActivity.TimeoutDuration, new TimeSpan(0, 0, 5)) > 0) {
e.Result = false;
}
else {
e.Result = true;
}
}
Which code segment should you use to handle the exception?
A. workflowChanges.TransientWorkflow.Activities.Add(codeActivity);
try {
this.ApplyWorkflowChanges(workflowChanges);
}
catch (ArgumentOutOfRangeException ex) {
Console.WriteLine(ex.GetType().ToString());
Console.ReadLine();
}
B. workflowChanges.TransientWorkflow.Activities.Add(codeActivity);
try {
this.ApplyWorkflowChanges(workflowChanges);
}
catch (InvalidProgramException ex) {
Console.WriteLine(ex.GetType().ToString());
Console.ReadLine();
}
C. workflowChanges.TransientWorkflow.Activities.Add(codeActivity);
try {
this.ApplyWorkflowChanges(workflowChanges);
}
catch (InvalidOperationException ex) {
Console.WriteLine(ex.GetType().ToString());
Console.ReadLine();
}
D. workflowChanges.TransientWorkflow.Activities.Add(codeActivity);
try {
this.ApplyWorkflowChanges(workflowChanges);
}
catch (OverflowException ex) {
Console.WriteLine(ex.GetType().ToString());
Console.ReadLine();
}
Answer: C