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Microsoft 70-528 VB exam is updated in examsoon in 2009-10-29. You can download the latest demo from examsoon.examsoon can help you pass the exam as soon as passible.

1. You are creating a Web Form. You write the following code segment to create a SqlCommand object.
Dim conn As SqlConnection = New SqlConnection(connString)
conn.Open()
Dim cmd As SqlCommand = conn.CreateCommand()
cmd.CommandText = “select count(*) from Customers”
You need to display the number of customers in the Customers table.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. Dim customerCount As Object = cmd.ExecuteScalar()
lblCompanyName.Text = customerCount.ToString()
B. Dim customerCount As Integer = cmd.ExecuteNonQuery()
lblCompanyName.Text = customerCount.ToString()
C. Dim dr As SqlDataReader = cmd.ExecuteReader()
dr.Read()
lblCompanyName.Text = dr(0).ToString()
D. Dim dr As SqlDataReader = cmd.ExecuteReader()
dr.Read()
lblCompanyName.Text = dr.ToString()
Answer: AC

2. You are creating a Web Form that displays product data. You create a DataView named dvOrders and bind it to a GridView.
You need to display the rows from dvOrders where the CategoryID is 2, in descending order of unit price.
Which code segment should you use?
A. dvOrders.Find(”CategoryID = 2, UnitPrice desc”)
dvOrders.Table.AcceptChanges()
B. dvOrders.RowFilter = “CategoryID = 2″
dvOrders.Sort = “UnitPrice desc”
C. dvOrders.Table.Select(”UnitPrice desc”, “Category = 2″)
D. dvOrders.Table.Select(”CategoryID = 2″, “UnitPrice desc”)
Answer: B

3. You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.)
01  Dim dt As New DataTable(”Products”)
02  dt.Columns.Add(New DataColumn(”Price”, _
      GetType(Decimal)))
03  dt.Columns.Add(New DataColumn(”Quantity”, _
      GetType(Int32)))
04  Dim dc As DataColumn = New DataColumn(”Total”, _
      GetType(Decimal))
05  dt.Columns.Add(dc)
You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed.
What should you do?
A. Add the following code segment after line 05.
dc.ExtendedProperties(”Total”) = “Price * Quantity”
B. Add the following code segment after line 05.
dc.Expression = “Price * Quantity”
C. Write an event handler for the DataTable’s TableNewRow event that updates the row’s Total.
D. Write an event handler for the DataTable’s ColumnChanged event that updates the row’s Total.
Answer: B

4. You are creating a Web Form. The Web Form allows users to rename or delete products in a list. You create a DataTable named dtProducts that is bound to a GridView. DataTable has the following four rows.
dtProducts.Rows(0)(”ProductName”) = “Soap”
dtProducts.Rows(1)(”ProductName”) = “Book”
dtProducts.Rows(2)(”ProductName”) = “Computer”
dtProducts.Rows(3)(”ProductName”) = “Spoon”
dtProducts.AcceptChanges()
The user utilizes a Web Form to delete the first product.
You need to set the RowStateFilter property of the DataTable’s DefaultView so that only products that have not been deleted are shown.
To which value should you set the DataTables’s DefaultView.RowStateFilter?
A. DataViewRowState.ModifiedOriginal
B. DataViewRowState.ModifiedCurrent
C. DataViewRowState.CurrentRows
D. DataViewRowState.Added
Answer: C

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