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You load an XmlDocument named doc with the following XML. Dictionary World Atlas You need to change the value for the genre attribute to NA for all book attributes. First, you add the following code segment to your class.Dim root As XmlElement = doc.DocumentElementDim nodes As XmlNodeList = root.SelectNodes("books/book")Which additional two code segments can you use to achieve this goal?（）

A. Dim node As XmlNodeFor Each node In nodes node.Attributes(0).Value = "NA"Next node
B. Dim node As XmlNodeFor Each node In nodes node.Attributes(1).Value = "NA"Next node
C. Dim node As XmlNodeFor Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("/genre") genre.Value = "NA"Next node
D. Dim node As XmlNodeFor Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("@genre") genre.Value = "NA"Next node
E. Dim node As XmlNodeFor Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("genre") genre.Value = "NA"Next node

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多項選擇題

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?（）

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()

多項選擇題

You create a Web Form that contains a TreeView control. The TreeView control allows users to navigate within the Marketing section of your Web site. The following XML defines the site map for your site. You need to bind the TreeView control to the site map data so that users can navigate only within the Marketing section. Which three actions should you perform?（）

A. Add a SiteMapDataSource control to the Web Form and bind the TreeView control to it.
B. Add a SiteMapPath control to the Web Form and bind the TreeView control to it.
C. Embed the site map XML within the SiteMap node of a Web.sitemap file.
D. Embed the site map XML within the AppSettings node of a Web.config file.
E. Set the StartingNodeUrl property of the SiteMapDataSource control to ~/Marketing.aspx.
F. Set the SkipLinkText property of the SiteMapPath control to Sales.

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