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Free 70-568 Questions and Answers Demo
1. You are creating a Windows Forms application by using the .NET Framework 3.5.
You create a new form in the application. You add a ContextMenuStrip control named ctxMenu to the form.
You have a user-defined class named CustomControl.
You write the following code segment in the application. (Line numbers are included for reference only.)
01 CustomControl myControl = new CustomControl();
02 You need to ensure that an instance of CustomControl is displayed on the form as a top-level item of
the ctxMenu control.
Which code segment should you add at line 02?
A. ToolStripControlHost host = new ToolStripControlHost(myControl);
ctxMenu.Items.Add(host);
B. ToolStripPanel panel = new ToolStripPanel();
panel.Controls.Add(myControl);
ctxMenu.Controls.Add(panel);
C. ToolStripContentPanel panel = new ToolStripContentPanel();
panel.Controls.Add(myControl);
ctxMenu.Controls.Add(panel);
D. ToolStripMenuItem menuItem = new ToolStripMenuItem();
ToolStripControlHost host = new ToolStripControlHost(myControl);
menuItem.DropDownItems.Add(host);
ctxMenu.Items.Add(menuItem);
Answer: A
2. You are creating a Windows Forms application by using the .NET Framework 3.5.
You create a new form in the application. You add a ContextMenuStrip control named ctxMenu to the form.
You have a user-defined class named CustomControl.
You write the following code segment in the application. (Line numbers are included for reference only.)
01 Dim myControl As New CustomControl()
02 You need to ensure that an instance of CustomControl is displayed on the form as a top-level item of
the ctxMenu control.
Which code segment should you add at line 02?
A. Dim host As New ToolStripControlHost(myControl)
ctxMenu.Items.Add(host)
B. Dim panel As New ToolStripPanel()
panel.Controls.Add(myControl)
ctxMenu.Controls.Add(panel)
C. Dim panel As New ToolStripContentPanel()
panel.Controls.Add(myControl)
ctxMenu.Controls.Add(panel)
D. Dim menuItem As New ToolStripMenuItem()
Dim host As New ToolStripControlHost(myControl)
menuItem.DropDownItems.Add(host)
ctxMenu.Items.Add(menuItem)
Answer: A
3. You are creating a Windows Forms application by using the .NET Framework 3.5.
You create a new form in your application. You add a PrintDocument control named pntDoc to the form.
To support the print functionality, you write the following code segment in the application. (Line numbers
are included for reference only.)
01 pntDoc.BeginPrint +=
new PrintEventHandler(PrintDoc_BeginPrint);
02 ...
03 bool canPrint = CheckPrintAccessControl();
04 if (!canPrint) {
05
06 }
07
You need to ensure that the following requirements are met:
W t he use has no p n access f on and fil e s ea m n a za ons a e no execu ed and t he p n
hen r ri t, t tr i iti li ti r t t ri t
operation is cancelled.
Print operations are logged whether or not the user has print access
What should you do?
A. Add the following code segment at line 05.
pntDoc.BeginPrint -= new PrintEventHandler(PrintDoc_BeginPrint);
pntDoc.BeginPrint +=
new PrintEventHandler((obj, args) => args.Cancel = true);
Add the following code segment at line 07.
pntDoc.BeginPrint +=
new PrintEventHandler((obj1, args1) => LogPrintOperation());
B. Add the following code segment at line 05.
pntDoc.BeginPrint +=
new PrintEventHandler(delegate(object obj, PrintEventArgs args){});
Add the following code segment at line 07.
pntDoc.BeginPrint -= new PrintEventHandler(PrintDoc_BeginPrint);
pntDoc.BeginPrint +=
new PrintEventHandler((obj1, args1) => LogPrintOperation());
C. Add the following code segment at line 05.
pntDoc.BeginPrint -= new PrintEventHandler(PrintDoc_BeginPrint);
pntDoc.BeginPrint -=
new PrintEventHandler(delegate(object obj, PrintEventArgs args){});
Add the following code segment at line 07.
pntDoc.BeginPrint -=
new PrintEventHandler((obj1, args1) => LogPrintOperation());
D. Add the following code segment at line 05.
pntDoc.BeginPrint -=
new PrintEventHandler((obj, args) => args.Cancel = true);
Add the following code segment at line 07.
pntDoc.BeginPrint += new PrintEventHandler(PrintDoc_BeginPrint);
pntDoc.BeginPrint -=
new PrintEventHandler((obj1, args1) => LogPrintOperation());
Answer: A
4. You are creating a Windows Forms application by using the .NET Framework 3.5.
You create a new form in your application. You add a PrintDocument control named pntDoc to the form.
To support the print functionality, you write the following code segment in the application. (Line numbers
are included for reference only.)
01 AddHandler pntDoc.BeginPrint, _
AddressOf PrintDoc_BeginPrint
02 ...
03 Dim canPrint As Boolean = CheckPrintAccessControl()
04 If canPrint = False Then
05
06 End If
07
You need to ensure that the following requirements are met:
W t he use has no p n access f on and fil e s ea m n a za ons a e no execu ed and t he p n
hen r ri t , t tr i iti li ti r t t ri t
operation is cancelled.
Print operations are logged whether or not the uer has print access.
What should you do?
A. Add the following code segment at line 05.
RemoveHandler pntDoc.BeginPrint, AddressOf PrintDoc_BeginPrint
AddHandler pntDoc.BeginPrint, _
Function(obj1, args1) args1.Cancel = True
Add the following code segment at line 07.
AddHandler pntDoc.BeginPrint, AddressOf
LogPrintOperation
B. Add the following code segment at line 05.
AddHandler pntDoc.BeginPrint, AddressOf EmptyEventHandler
Add the following code segment at line 07.
RemoveHandler pntDoc.BeginPrint, AddressOf PrintDoc_BeginPrint
AddHandler pntDoc.BeginPrint, AddressOf
LogPrintOperation
C. Add the following code segment at line 05.
RemoveHandler pntDoc.BeginPrint, AddressOf PrintDoc_BeginPrint
RemoveHandler pntDoc.BeginPrint, AddressOf EmptyEventHandler
Add the following code segment at line 07.
RemoveHandler pntDoc.BeginPrint, AddressOf
LogPrintOperation
D. Add the following code segment at line 05.
AddHandler pntDoc.BeginPrint, _
function(obj1, args1) args1.Cancel = True
Add the following code segment at line 07.
AddHandler pntDoc.BeginPrint, AddressOf PrintDoc_BeginPrint
RemoveHandler pntDoc.BeginPrint, AddressOf
LogPrintOperation
Answer: A
5. You are creating a Windows Forms application by using the .NET Framework 3.5.
You plan to modify a list of orders within a DataGridView control in the application.
You need to ensure that a value is required in the first column of the grid control.
Which code segment should you use?
A. private void dataGridOrders_CellValidated(
object sender, DataGridViewCellEventArgs e) {
if (e.ColumnIndex == 0) {
var cellValue = dataGridOrders[
e.ColumnIndex, e.RowIndex].Value;
if (cellValue == null ||
string.IsNullOrEmpty(cellValue.ToString()))
{
dataGridOrders.EndEdit();
}
}
}
B. private void dataGridOrders_Validated(
object sender, EventArgs e) {
if (dataGridOrders.CurrentCell.ColumnIndex == 0) {
var cellValue = dataGridOrders.Text;
if (cellValue == null ||
string.IsNullOrEmpty(cellValue.ToString()))
{
dataGridOrders.EndEdit();
}
}
}
C. private void dataGridOrders_Validating(
object sender, CancelEventArgs e) {
if (dataGridOrders.CurrentCell.ColumnIndex == 0) {
var cellValue = dataGridOrders.Text;
if (cellValue == null ||
string.IsNullOrEmpty(cellValue.ToString()))
{
e.Cancel = true;
}
}
}
D. private void dataGridOrders_CellValidating(
object sender, DataGridViewCellValidatingEventArgs e) {
if (e.ColumnIndex == 0) {
if (e.FormattedValue == null ||
string.IsNullOrEmpty(e.FormattedValue.ToString()))
{
e.Cancel = true;
}
}
}
Answer: D
6. You are creating a Windows Forms application by using the .NET Framework 3.5.
You plan to modify a list of orders within a DataGridView control in the application.
You need to ensure that a value is required in the first column of the grid control.
Which code segment should you use?
A. Private Sub dataGridOrders_CellValidated( _
ByVal sender As Object, _
ByVal e As DataGridViewCellEventArgs) _
Handles dataGridOrders.CellValidated
If e.ColumnIndex = 0 Then
Dim cellValue = dataGridOrders(e.ColumnIndex, e.RowIndex).Value
If cellValue = Nothing _
Or String.IsNullOrEmpty(cellValue.ToString()) Then
dataGridOrders.EndEdit()
End If
End If
End Sub
B. Private Sub dataGridOrders_Validated( _
ByVal sender As Object, _
ByVal e As EventArgs) _
Handles dataGridOrders.Validated
If dataGridOrders.CurrentCell.ColumnIndex = 0 Then
Dim cellValue = dataGridOrders.Text
If cellValue = Nothing Or _
String.IsNullOrEmpty(cellValue.ToString()) Then
dataGridOrders.EndEdit()
End If
End If
End Sub
C. Private Sub dataGridOrders_Validating( _
ByVal sender As Object, _
ByVal e As CancelEventArgs) _
Handles dataGridOrders.Validating
If dataGridOrders.CurrentCell.ColumnIndex = 0 Then
Dim cellValue = dataGridOrders.Text
If cellValue = Nothing Or _
String.IsNullOrEmpty(cellValue.ToString()) Then
e.Cancel = True
End If
End If
End Sub
D. Private Sub dataGridOrders_CellValidating( _
ByVal sender As Object, _
ByVal e As DataGridViewCellValidatingEventArgs) _
Handles dataGridOrders.CellValidating
If e.ColumnIndex = 0 Then
If e.FormattedValue = Nothing _
Or String.IsNullOrEmpty(e.FormattedValue.ToString()) Then
e.Cancel = True
End If
End If
End Sub
Answer: D
7. You are creating a Windows Forms application by using the .NET Framework 3.5.
You write the following code segment to bind a list of categories to a drop-down list. (Line numbers are
included for reference only.)
01 OleDbConnection cnnNorthwind =
new OleDbConnection(connectionString);
02 OleDbCommand cmdCategory = new OleDbCommand(
"SELECT CategoryID, CategoryName FROM Categories ORDER BY
CategoryName", cnnNorthwind);
03 OleDbDataAdapter daCategory = new
OleDbDataAdapter(cmdCategory);
04 DataSet dsCategory = new DataSet();
05 daCategory.Fill(dsCategory);
06
You need to ensure that the drop-down list meets the following requirements:
Displays all category names
Uses the category ID as the selected item value
Which code segment should you add at line 06?
A. ddlCategory.DataSource = dsCategory;
ddlCategory.DisplayMember = "CategoryName";
ddlCategory.ValueMember = "CategoryID";
B. ddlCategory.DataSource = dsCategory.Tables[0];
ddlCategory.DisplayMember = "CategoryName";
ddlCategory.ValueMember = "CategoryID";
C. ddlCategory.DataBindings.Add("DisplayMember",
dsCategory, "CategoryName");
ddlCategory.DataBindings.Add("ValueMember",
dsCategory, "CategoryID");
D. ddlCategory.DataBindings.Add("DisplayMember",
dsCategory.Tables[0], "CategoryName");
ddlCategory.DataBindings.Add("ValueMember",
dsCategory.Tables[0], "CategoryID");
Answer: B
8. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database.
You write the following code segment. (Line numbers are included for reference only.)
01 using (SqlConnection connection = new
SqlConnection(connectionString)) {
02 SqlCommand cmd = new SqlCommand(queryString, connection);
03 connection.Open();
04
05 while (sdrdr.Read()){
06 // use the data in the reader
07 }
08 }
You need to ensure that the memory is used efficiently when retrieving BLOBs from the database.
Which code segment should you insert at line 04?
A. SqlDataReader sdrdr =
cmd.ExecuteReader();
B. SqlDataReader sdrdr =
cmd.ExecuteReader(CommandBehavior.Default);
C. SqlDataReader sdrdr =
cmd.ExecuteReader(CommandBehavior.SchemaOnly);
D. SqlDataReader sdrdr =
cmd.ExecuteReader(CommandBehavior.SequentialAccess);
Answer: D
9. You are creating a Windows Forms application by using the .NET Framework 3.5.
You write the following code segment to bind a list of categories to a drop-down list. (Line numbers are
included for reference only.)
01 Dim cnnNorthwind As OleDbConnection = _
New OleDbConnection(connectionString)
02 Dim cmdCategory As OleDbCommand = New OleDbCommand( _
"SELECT CategoryID, CategoryName FROM Categories ORDER BY
CategoryName", cnnNorthwind)
03 Dim daCategory As OleDbDataAdapter = _
New OleDbDataAdapter(cmdCategory)
04 Dim dsCategory As DataSet = New DataSet()
05 daCategory.Fill(dsCategory)
06
You need to ensure that the drop-down list meets the following requirements:
Displays all category names
Uses the category ID as the selected item value
Which code segment should you add at line 06?
A. ddlCategory.DataSource = dsCategory
ddlCategory.DisplayMember = "CategoryName"
ddlCategory.ValueMember = "CategoryID"
B. ddlCategory.DataSource = dsCategory.Tables(0)
ddlCategory.DisplayMember = "CategoryName"
ddlCategory.ValueMember = "CategoryID"
C. ddlCategory.DataBindings.Add("DisplayMember", _
dsCategory, "CategoryName")
ddlCategory.DataBindings.Add("ValueMember", _
dsCategory, "CategoryID")
D. ddlCategory.DataBindings.Add("DisplayMember", _
dsCategory.Tables(0), "CategoryName")
ddlCategory.DataBindings.Add("ValueMember", _
dsCategory.Tables(0), "CategoryID")
Answer: B
10. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database.
You write the following code segment. (Line numbers are included for reference only.)
01 Using connection As New SqlConnection(connectionString)
02 Dim cmd As New SqlCommand(queryString, connection)
03 connection.Open()
04
05 While sdrdr.Read()
06 ' use the data in the reader
07 End While
08 End Using
You need to ensure that the memory is used efficiently when retrieving BLOBs from the database.
Which code segment should you insert at line 04?
A. Dim sdrdr As SqlDataReader = _
cmd.ExecuteReader()
B. Dim sdrdr As SqlDataReader = _
cmd.ExecuteReader(CommandBehavior.[Default])
C. Dim sdrdr As SqlDataReader = _
cmd.ExecuteReader(CommandBehavior.SchemaOnly)
D. Dim sdrdr As SqlDataReader = _
cmd.ExecuteReader(CommandBehavior.SequentialAccess)
Answer: D
11. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database.
You write the following code segment.
string query = "Select EmpNo, EmpName from dbo.Table_1;
select Name,Age from dbo.Table_2";
SqlCommand command = new SqlCommand(query, connection);
SqlDataReader reader = command.ExecuteReader();
You need to ensure that the application reads all the rows returned by the code segment.
Which code segment should you use?
A. while (reader.NextResult())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
reader.Read();
}
B. while (reader.Read())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
reader.NextResult();
}
C. while (reader.Read())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
}
reader.NextResult();
while (reader.Read())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
}
D. while (reader.NextResult())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
}
reader.Read();
while (reader.NextResult())
{
Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
}
Answer: C
12. You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a Web form and add the following code fragment.
The SqlDataSource1 DataSource control retrieves the Quantity column values from a table named
Products.
You write the following code segment to create the rptData_ItemDataBound event handler. (Line numbers
are included for reference only.)
01 protected void rptData_ItemDataBound(object sender,
02 RepeaterItemEventArgs e)
03 {
04
05 if(lbl != null)
06 if(int.Parse(lbl.Text) < 10)
07 lbl.ForeColor = Color.Red;
08 }
You need to retrieve a reference to the lblQuantity Label control into a variable named lbl.
Which code segment should you insert at line 04?
A. Label lbl = Page.FindControl("lblQuantity") as Label;
B. Label lbl = e.Item.FindControl("lblQuantity") as
Label;
C. Label lbl = rptData.FindControl("lblQuantity") as
Label;
D. Label lbl = e.Item.Parent.FindControl("lblQuantity") as
Label;
Answer: B
13. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database.
You write the following code segment.
Dim query As String = _
"Select EmpNo, EmpName from dbo.Table_1; " + _
"select Name,Age from dbo.Table_2"
Dim command As New SqlCommand(query, connection)
Dim reader As SqlDataReader = command.ExecuteReader()
You need to ensure that the application reads all the rows returned by the code segment.
Which code segment should you use?
A. While reader.NextResult()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
reader.Read()
End While
B. While reader.Read()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
reader.NextResult()
End While
C. While reader.Read()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
End While
reader.NextResult()
While reader.Read()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
End While
D. While reader.NextResult()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
End While
reader.Read()
While reader.NextResult()
Console.WriteLine([String].Format("{0}, {1}", reader(0), reader(1)))
End While
Answer: C
14. You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a Web form and add the following code fragment.
The SqlDataSource1 DataSource control retrieves the Quantity column values from a table named
Products.
You write the following code segment to create the rptData_ItemDataBound event handler. (Line numbers
are included for reference only.)
01 Protected Sub rptData_ItemDataBound(ByVal sender As Object, _
02 ByVal e As RepeaterItemEventArgs)
03 ?
04 If lbl IsNot Nothing Then
05 If Integer.Parse(lbl.Text) < 10 Then
06 lbl.ForeColor = Color.Red
07 End If
08 End If
09 End Sub
You need to retrieve a reference to the lblQuantity Label control into a variable named lbl.
Which code segment should you insert at line 03?
A. Dim lbl As Label = _
TryCast(Page.FindControl("lblQuantity"), Label)
B. Dim lbl As Label = _
TryCast(e.Item.FindControl("lblQuantity"), Label)
C. Dim lbl As Label = _
TryCast(rptData.FindControl("lblQuantity"), Label)
D. Dim lbl As Label = _
TryCast(e.Item.Parent.FindControl("lblQuantity"), Label)
Answer: B
15. You are creating a Windows Forms application by using the .NET Framework 3.5.
You write the following code segment to update multiple databases on a SQL Server 2008 database.
(Line numbers are included for reference only.)
01 string connectionStringCustomer = @"Data
Source=CUSTOMER;Integrated Security= SSPI;";
02 string connectionStringOrders = @"Data Source=ORDER
;Integrated Security= SSPI;";
03 SqlCommand cmdCustomer = new SqlCommand();
04 SqlCommand cmdOrders = new SqlCommand();
05 SqlConnection cnnCustomer =
new SqlConnection(connectionStringCustomer);
06 SqlConnection cnnOrders =
new SqlConnection(connectionStringOrders);
07
You need to ensure that all database updates are included in a single distributed transaction.
Which code fragment should you add on Line 07?
A. cnnCustomer.Open();
cnnOrders.Open();
...
cmdOrders.ExecuteNonQuery();
...
cmdCustomer.ExecuteNonQuery();
cnnOrders.Close();
cnnCustomer.Close();
B. TransactionScope scope = new TransactionScope();
cnnCustomer.Open();
cnnOrders.Open();
...
cmdOrders.ExecuteNonQuery();
...
cmdCustomer.ExecuteNonQuery();
cnnOrders.Close();
cnnCustomer.Close();
scope.Complete();
C. TransactionScope customerScope =
new TransactionScope() {
using (SqlConnection cnnCustomer =
new SqlConnection (connectionStringCustomer)) { }
customerScope.Complete(); }
using (TransactionScope ordersScope =
new TransactionScope()) {
using (SqlConnection cnnOrders =
new SqlConnection(connectionStringOrders)) { }
ordersScope.Complete(); }
D. try {
cmdOrders.Transaction = cnnOrders.BeginTransaction();
...
cmdOrders.ExecuteNonQuery();
...
cmdCustomer.Transaction = cnnCustomer.BeginTransaction();
...
cmdCustomer.ExecuteNonQuery();
cmdCustomer.Transaction.Commit();
cmdOrders.Transaction.Commit();
}catch {
cmdCustomer.Transaction.Rollback();
cmdOrders.Transaction.Rollback();
}
Answer: B
16. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application has a DataTable object named OrderDetailTable. The object has the following columns:
I
OrderI
ProductI
Quantity
LineTota
The OrderDetailTable object is populated with data provided by a business partner. Some of the records
contain a null value in the LineTotal field and 0 in the Quantity field.
You write the following code segment. (Line numbers are included for reference only.)
01 DataColumn col = new DataColumn("UnitPrice", typeof(decimal));
02
03 OrderDetailTable.Columns.Add(col);
You need to add a DataColumn named UnitPrice to the OrderDetailTable object.
Which line of code should you insert at line 02?
A. col.Expression = "LineTotal/Quantity";
B. col.Expression = "LineTotal/ISNULL(Quantity, 1)";
C. col.Expression = "LineTotal.Value/ISNULL(Quantity.Value,1)";
D. col.Expression = "iif(Quantity > 0, LineTotal/Quantity, 0)";
Answer: D
17. You are creating a Windows Forms application by using the .NET Framework 3.5.
You write the following code segment to update multiple databases on a SQL Server 2008 database.
(Line numbers are included for reference only.)
01 Dim connectionStringCustomer As String = "Data
Source=CUSTOMER;Integrated Security = SSPI;"
02 Dim connectionStringOrders As String = "Data
Source=ORDER;Integrated Security = SSPI;"
03 Dim cmdCustomer As SqlCommand = New SqlCommand()
04 Dim cmdOrders As SqlCommand = New SqlCommand()
05 Dim cnnCustomer As SqlConnection = New
SqlConnection(connectionStringCustomer)
06 Dim cnnOrders As SqlConnection = New
SqlConnection(connectionStringOrders)
07
You need to ensure that all database updates are included in a single distributed transaction.
Which code fragment should you add at line 07?
A. cnnCustomer.Open()
cnnOrders.Open()
cmdOrders.ExecuteNonQuery()
cmdCustomer.ExecuteNonQuery()
cnnOrders.Close()
cnnCustomer.Close()
B. Dim scope As TransactionScope = New TransactionScope()
cnnCustomer.Open()
cnnOrders.Open()
cmdOrders.ExecuteNonQuery()
cmdCustomer.ExecuteNonQuery()
cnnOrders.Close()
cnnCustomer.Close()
scope.Complete();
C. Using customerScope = New TransactionScope()
cnnCustomer.Open()
cmdCustomer.ExecuteNonQuery()
cnnCustomer.Close()
customerScope.Complete()
End Using
Using ordersScope = New TransactionScope()
cnnOrders.Open()
cmdOrders.ExecuteNonQuery()
cnnOrders.Close()
ordersScope.Complete()
End Using
D. Try
cmdOrders.Transaction = cnnOrders.BeginTransaction()
cmdOrders.ExecuteNonQuery()
cmdCustomer.Transaction = cnnCustomer.BeginTransaction()
cmdCustomer.ExecuteNonQuery()
cmdCustomer.Transaction.Commit()
cmdOrders.Transaction.Commit()
Catch ex As Exception
cmdCustomer.Transaction.Rollback()
cmdCustomer.Transaction.Rollback()
End Try
Answer: B
18. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application has a DataTable object named OrderDetailTable. The object has the following columns:
I
OrderI
ProductI
Quantit
LineTota
The OrderDetailTable object is populated with data provided by a business partner. Some of the records
contain a null value in the LineTotal field and 0 in the Quantity field.
You write the following code segment. (Line numbers are included for reference only.)
01 Dim col As New DataColumn("UnitPrice", GetType(Decimal))
02
03 OrderDetailTable.Columns.Add(col)
You need to add a DataColumn named UnitPrice to the OrderDetailTable object.
Which line of code should you insert at line 02?
A. col.Expression = "LineTotal/Quantity"
B. col.Expression = "LineTotal/ISNULL(Quantity, 1)"
C. col.Expression = "LineTotal.Value/ISNULL(Quantity.Value, 1)"
D. col.Expression = "iif(Quantity > 0, LineTotal/Quantity, 0)"
Answer: D
19. You are creating a Windows Forms application by using the .NET Framework 3.5.
You write a code segment to connect to a Microsoft Access database and populate a DataSet.
You need to ensure that the application meets the following requirements:
Itdisplays all database exceptions.
It logs all other exceptions by using the LogExceptionToFile
Which code segment should you use?
A. try
{
categoryDataAdapter.Fill(dsCategory);
}
catch (SqlException ex)
{
MessageBox.Show(ex.Message, "Exception");
LogExceptionToFile(ex.Message);
}
B. try
{
categoryDataAdapter.Fill(dsCategory);
}
catch (SqlException ex)
{
MessageBox.Show(ex.Message, "Exception");
}
catch (Exception ex)
{
LogExceptionToFile(ex.Message);
}
C. try
{
categoryDataAdapter.Fill(dsCategory);
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Message, "Exception");
}
catch (Exception ex)
{
LogExceptionToFile(ex.Message);
}
D. try
{
categoryDataAdapter.Fill(dsCategory);
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Message, "Exception");
LogExceptionToFile(ex.Message);
}
Answer: C
20. You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application contains a DataSet object named orderDS. The object contains a table named Order as
shown in the following exhibit.
The application uses a SqlDataAdapter object named daOrder to populate the Order table.
You write the following code segment. (Line numbers are included for reference only.)
01 private void FillOrderTable(int pageIndex) {
02 int pageSize = 5;
03
04 }
You need to fill the Order table with the next set of 5 records for each increase in the pageIndex value.
Which code segment should you insert at line 03?
A. string sql = "SELECT SalesOrderID, CustomerID, OrderDate FROM
Sales.SalesOrderHeader";
daOrder.SelectCommand.CommandText = sql;
daOrder.Fill(orderDS, pageIndex, pageSize, "Order");
B. int startRecord = (pageIndex - 1) * pageSize;
string sql = "SELECT SalesOrderID, CustomerID, OrderDate FROM
Sales.SalesOrderHeader";
daOrder.SelectCommand.CommandText = sql;
daOrder.Fill(orderDS, startRecord, pageSize, "Order");
C. string sql = string.Format("SELECT TOP {0} SalesOrderID,
CustomerID,
OrderDate FROM Sales.SalesOrderHeader WHERE SalesOrderID > {1}",
pageSize, pageIndex);
daOrder.SelectCommand.CommandText = sql;
daOrder.Fill(orderDS, "Order");
D. int startRecord = (pageIndex - 1) * pageSize;
string sql = string.Format("SELECT TOP {0} SalesOrderID, CustomerID,
OrderDate FROM Sales.SalesOrderHeader WHERE SalesOrderID > {1}",
pageSize, startRecord);
daOrder.SelectCommand.CommandText = sql;
daOrder.Fill(orderDS, "Order");
Answer: B
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