Tk & P4s 70-536,70-528 & 70-526

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QUESTION 1
You work as the Web developer at Certkiller .com. You develop a new ASP.NET application named
Certkiller App11. Certkiller App11 will be used to present results to users of the company Web site.
You specify a DataGrid control to present a list of questions and the number of responses received for
each question. You must change the control with the result being that the total number of responses
received is shown in the footer of the grid. You want to use the minimum amount of development
effort to achieve your goal.
What should you do next?
A. Override the OnPreRender event and then show the total number of responses received when the
footer row is created.
B. Override the OnItemCreated event and then show the total number of responses received when the
footer row is created,
C. Override the OnItemDataBound event and then show the total number of responses received when
the footer row is bound.
D. Override the OnLayout event and and then show the total number of responses received in the footer
row.
Answer: C
Explanation: The ItemDataBound event is raised after an item is data bound to the DataGrid control. This
event provides you with the last opportunity to access the data item before it is displayed on the client. After
this event is raised, the data item is nulled out and no longer available.
Reference: .NET Framework Class Library, DataGrid.ItemDataBound Event [Visual Basic]
Incorrect Answers
A: The OnPreRender method notifies the server control to perform any necessary prerendering steps
prior to saving view state and rendering content.
B: The ItemCreated event is raised when an item in the DataGrid control is created, both during roundtrips
and at the time data is bound to the control.
D: The OnLayout Method raises the Layout event that repositions controls and updates scroll bars.
QUESTION 2
You work as the Web developer at Certkiller .com. You configure a new ASP.NET page. Your page
will be used to show purchasing information on Certkiller .com’s customers. The page uses the
System.Data.SqlClient namespace and System.Data namespace.
Your new page consists of two separate DataGrid controls. One DataGrid control shows this year’s
purchasing information, and one DataGrid control shows all previous years purchasing information.
All purchasing information is contained in a Microsoft SQL Server Database. To retrieve a specific
customer’s purchasing information from the SQL database, the customer’s identification number is

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specified, and a stored procedure named GetPurchases is called. After the GetPurchases stored
procedure runs, the Page.Load event handler populates a DataView object named CKDataView with
the information.
You have configured this code in the Page.Load event handler to bind the two DataGrid controls to
CKDataView:
dataGridCurrentYear.DataSource = CKDataView
CKDataView.RowFilter = “PurchaseDate >= #01/01/” & _
Now.Year & “#”
dataGridCurrentYear.DataBind()
dataGridPreviousYears.DataSource = CKDataView
CKDataView.RowFilter = “PurchaseDate < #01/01″ & _
Now.Year & “#”
dataGridPreviousYears.DataBind()
Page.DataBind
You test your configuration and find that each DataGrid control is showing purchasing information
for only previous years.
What should you do next to ensure that one DataGrid control shows this year’s purchasing
information, the other DataGrid control shows all previous years purchasing information?
A. Delete the Page.DataBind() statement.
B. Delete the dataGridPreviousYears.DataBind() statement.
C. Set a Response.Flush() statement immediately prior to the Page.DataBind() statement.
D. Set a Response.Flush() statement immediately prior to the dataGridPreviousYears.DataBind()
statement.
Answer: A
Explanation: Both datagrids use the same DataView. The Page.Databind method binds a data source to the
invoked server control and all its child controls. We should remove this statement.
Reference: .NET Framework Class Library, Control.DataBind Method [Visual Basic]
Incorrect Answers
B: We must bind each data grid control to its data source
C, D: The HttpResponse Flush method sends all currently buffered output to the client. It is not useful in
this scenario.
QUESTION 3
You work as the Web developer at Certkiller .com. You configure a new ASP.NET page. Your new
page contains a DataGrid control that will be used to show all previous orders placed by users. An
existing database populates the DataGrid control when your page is created.
Your ASP.NET page contains various TextBox controls, which are used by users to change personal
contact information. You must implement the code that will result in the page being refreshed as
quickly as possible when users update contact information.
What should you do next?
A. Change the Enable property of the DataGrid control to false.
B. Change the EnableViewState property of the DataGrid to false.

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C. Add code in the Page.Load event handler that populates the DataGrid control only if the IsPostBack
property of the page is false.
D. Add code in the Page.Load event handler that populates the DataGrid control only if the IsPostBack
property of the page is true.
Answer: D
Explanation: The Page.IsPostBack property gets a value indicating whether the page is being loaded in
response to a client postback, or if it is being loaded and accessed for the first time. The value is true if the
page is being loaded in response to a client postback; otherwise, false. By adding code in the Page Load
event handler that populates the Data Grid control when the IsPostBack property is true we ensure that the
page is refreshed as quickly as possible.
Reference: .NET Framework Class Library, Page.IsPostBack Property [Visual Basic]
Incorrect Answers
A: The DataGrid control has an Enabled property, but no Enable property. Furthermore, the Enable
property only indicates if the control is enabled or not.
B: The Control.EnableViewState property indicates whether the server control persists its view state,
and the view state of any child controls it contains, to the requesting client.
C: The DataGrid should only be populated when the user updates the contact information. This occurs
when the IsPostBack property is true, not false. This suggested solution would only populate the
DataGrid when the page is loaded the first time.

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