070-511 試験問題を無料オンラインアクセス

DRAG DROP
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You need to configure the application to meet the following requirements:
- When a TextBox control has focus and no characters, the background color of the TextBox must be Blue. - When the TextBox control loses focus, the background of the TextBox must revert to the original value.
What should you do? (Develop the solution by selecting and ordering the required code snippets. You may not need all of the code snippets.)

正解：

You are developing a Windows Presentation Foundation (WPF) application.
The application consists of: - A window that contains controls organized into groups. - Groups that are ordered vertically and that have individual headings.
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Controls within the groups that are ordered horizontally. Groups and controls that will be added dynamically at run time.
You need to ensure that the application meets the following requirements:
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The window must be resizable without affecting the layout of the controls. The controls within the groups must be laid out such that there is a minimum amount of spacing between groups.
What should you do?

• A.Use a ListBox control to organize the groups. Use Canvas controls to organize the controls.
• B.Use a WrapPanel control to organize the groups with its Orientation property set to Vertical. Use WrapPanel controls to organize the controls with their Orientation property set to Horizontal.
• C.Use a Grid control with its VerticalAlignment property set to Stretch to organize the groups and specify the row definitions. Use Grid controls to organize the controls and specify the column definitions.
• D.use a StackPanel control to organize the groups with its Orientation property set to Vertical. Use StackPanel controls to organize the controls with their Orientation property set to Horizontal.

You are developing a Windows Presentation Foundation (WPF) application that plays video clips.
The markup is as follows.

You need to ensure that the current running time of the video is automatically updated and displayed in CurrentRunTime.
What should you do?

• A.Register for the myMediaTimeline Changed event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Clock.ToString();
• B.Register for the myMediaTimeline CurrentTimelnvalidated event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Position.ToString();
• C.Register for the myMediaTimeline Changed event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Position.ToString();
• D.Register for the myMediaTimeline CurrentTimelnvalidated event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Clock.ToString();

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment.

You need to implement the MyProject.AverageConverter class.
What should you do?

• A.Implement the IMultiValueConverter interface.
• B.Apply the TypeConverterAttribute attribute.
• C.Inherit from the TypeConverter class.
• D.Implement the IValueConverter interface.

You have the following code in a Windows Presentation Foundation (WPF) application:

You need to animate the ellipse.
Which code segment should you use to declare the animation at line 13?

• A.PointAnimation a = new PointAnimation();
• B.DiscreteVectorKeyFrame a = new DiscreteVectorKeyFrame();
• C.AnimationTimeiine a;
• D.DoubleAnimation a = new DoubleAnimation();