70-526C++ Exam

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Exam : Microsoft 70-526C++
Title : Microsoft .NET Framework 2.0 - Windows-based Client Development is in development


1. You are creating a Windows Form. You add a TableLayoutPanel control named pnlLayout to the form. You set the properties of pnlLayout so that it will resize with the form.
You need to create a three-column layout that has fixed left and right columns. The fixed columns must each remain 50 pixels wide when the form is resized. The middle column must fill the remainder of the form width when the form is resized. You add the three columns in the designer.
Which code segment should you use to format the columns at run time?
A. pnlLayout->ColumnStyles->Clear();
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::Absolute,
50));
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::AutoSize,
100));
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::Absolute,
50));
B. pnlLayout->ColumnStyles[0]->Width = 50;
pnlLayout->ColumnStyles[0]->SizeType = SizeType::Absolute;
pnlLayout->ColumnStyles[2]->Width = 50;
pnlLayout->ColumnStyles[2]->SizeType = SizeType::Absolute;
C. pnlLayout->ColumnStyles[0]->Width = 50;
pnlLayout->ColumnStyles[0]->SizeType = SizeType::Absolute;
pnlLayout->ColumnStyles[1]->Width = 100;
pnlLayout->ColumnStyles[1]->SizeType = SizeType::AutoSize;
pnlLayout->ColumnStyles[2]->Width = 50;
pnlLayout->ColumnStyles[2]->SizeType = SizeType::Absolute;
D. pnlLayout->ColumnStyles->Clear();
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::Absolute,
50));
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::Percent,
100));
pnlLayout->ColumnStyles->Add(gcnew ColumnStyle(SizeType::Absolute,
50));
Answer: D

2. You are customizing a Windows Form. When the user clicks any button, you want the application to log information about the user's actions by calling a method with the following signature.
public:
System::Void ctl_Click(Object ^sender, EventArgs ^e)
You want the form to invoke this method when any Button control is clicked and only when a Button control is clicked.
You need to modify the form to invoke this method without interfering with the existing operations of the application.
What should you do?
A. Add the following code to the form initialization.
for each (Control ^ctl in this->Controls) {
if (dynamic_cast< Button ^ >(ctl) != nullptr){
ctl->Click += gcnew EventHandler(this, &Form1::ctl_Click);
}
}
B. Add the following code to the form initialization.
this->Click += gcnew EventHandler(this,&Form1::ctl_Click);
C. Use the Properties dialog box to set the Click event for each Button control on the form to the ctl_Click method.
D. Use the Properties dialog box to set the Click event of the form to the ctl_Click method.
Answer: A

3. You are creating a Windows Form that includes a TextBox control named txtDate.
When a user right-clicks within the text box, you want the application to display a MonthCalendar control.
You need to implement a context menu that provides this functionality.
What should you do?
A. Add the following code to the form initialization.
MonthCalendar ^cal = gcnew MonthCalendar();
ContextMenuStrip ^mnuContext = gcnew ContextMenuStrip();
ToolStripControlHost ^host = gcnew
ToolStripControlHost(mnuContext);
txtDate->ContextMenuStrip = mnuContext;
B. Add the following code to the form initialization.
ContextMenuStrip ^mnuContext = gcnew ContextMenuStrip();
MonthCalendar ^cal = gcnew MonthCalendar();
ToolStripControlHost ^host = gcnew
ToolStripControlHost(cal);
mnuContext->Items->Add(host);
txtDate->ContextMenuStrip = mnuContext;
C. Add the following code to the form initialization.
ToolStripContainer ^ctr = gcnew ToolStripContainer();
MonthCalendar ^cal = gcnew MonthCalendar();
ctr->ContentPanel->Controls->Add(cal);
txtDate->Controls->Add(ctr);
Add a MouseClick event handler for the TextBox control that contains the following code.
if (e->Button == MouseButtons::Right) {
txtDate->Controls[0]->Show();
}
D. Add a MouseClick event handler for the TextBox control that contains the following code.
if (e->Button == MouseButtons::Right) {
ContextMenuStrip ^mnuContext = gcnew ContextMenuStrip();
MonthCalendar ^cal = gcnew MonthCalendar();
ToolStripControlHost ^host = gcnew
ToolStripControlHost(cal);
mnuContext->Items->Add(host);
txtDate->ContextMenuStrip = mnuContext;
}
Answer: B

4. You are customizing a Windows Form. The form includes a menu that has several ToolStripMenuItem controls. An event handler is configured to handle the Click event for all ToolStripMenuItem controls. The event handler has the following signature.
private: void mnu_Click(Object ^sender, EventArgs ^e)
The form class includes a method that has the following signature.
private: void LogClick(String ^ctlName)
You need to add code so that when a user clicks a ToolStripMenuItem control, the mnu_Click method calls the LogClick method. The LogClick method must be called with the ctlName parameter set to the menu text in the ToolStripMenuItem control.
Which code segment should you use?
A. ToolStripMenuItem ^mnuItem = (ToolStripMenuItem^)sender;
LogClick(mnuItem->Text);
B. LogClick(e->ToString());
C. LogClick(this->Text);
D. ToolStripMenuItem ^mnuItem = (ToolStripMenuItem^)
this->GetContainerControl();
LogClick(mnuItem->Text);
Answer: A

5. You are creating a Windows Forms application. You add an ErrorProvider component named erpErrors and a DateTimePicker control named dtpStartDate to the application. The application also contains other controls.
You need to configure the application to display an error notification icon next to dtpStartDate when the user enters a date that is greater than today's date.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. For the Validating event of dtpStartDate, create an event handler named VerifyStartDate.
B. For the Validated event of dtpStartDate, create an event handler named VerifyStartDate.
C. In the Properties Window for dtpStartDate, set the value of Error on erpErrors to Date out of range.
D. In VerifyStartDate, call erpErrors->SetError(dtpStartDate, "Date out of range") if the value of dtpStartDate->Value is greater than today's date.
E. In VerifyStartDate, call erpErrors->SetError(dtpStartDate, "") if the value of dtpStartDate->Value is greater than today's date.
Answer: AD