Visual Programming MCQs with Answers
Practice important Visual Programming MCQs with answers and explanations.
Multiple Choice Questions
Q471: What does the Canvas.Background property in the XAML code define?
- A: The background gradient of the canvas
- B: The border color of the canvas
- C: The size of the canvas
- D: The layout of child elements in the canvas
View Answer
A
Q472: What is the purpose of implementing the ICommand interface in WPF?
- A: To define a command with execute and can execute methods
- B: To create a custom UI element with specific properties
- C: To handle events directly in the code-behind
- D: To define data binding for a UI element
View Answer
A
Q473: How can you enable or disable a command in WPF?
- A: By setting the IsEnabled property of the command
- B: By using the CanExecute method of the command
- C: By modifying the CommandBindings collection
- D: By changing the Command property of the button
View Answer
B
Q474: Which event is triggered when a command is executed?
- A: Executed
- B: CanExecuteChanged
- C: PreviewExecuted
- D: CommandChanged
View Answer
A
Q475: What is the role of CommandBindings in WPF?
- A: To associate commands with event handlers
- B: To define the layout of UI elements
- C: To set properties for UI elements
- D: To manage data binding between UI elements
View Answer
A
Q476: In XAML, how do you specify a command to be executed when a button is clicked?
- A: By setting the Command property of the button
- B: By handling the Click event of the button
- C: By binding the Command property to a method
- D: By using the CommandBinding in the code-behind
View Answer
A
Q477: What is the CanExecute method used for in the ICommand interface?
- A: To determine if a command can be executed
- B: To define the logic for executing a command
- C: To update the command's appearance based on execution status
- D: To handle the completion of command execution
View Answer
A
Q478: What is the purpose of CommandBinding in WPF?
- A: To link a command to its execution logic and its ability to execute
- B: To define a new command for a specific control
- C: To manage the input gestures for commands
- D: To create a new UI element with custom behavior
View Answer
A
Q479: How do you add a command binding to a control in XAML?
- A: By defining it within the
section - B: By setting the Command property directly on the control
- C: By using the CommandBindings collection in the control's code-behind
- D: By using the InputBindings property of the control
View Answer
A
Q480: What is a typical use case for KeyBinding in WPF?
- A: To associate a keyboard shortcut with a command
- B: To bind a key press to a specific UI element
- C: To handle mouse events for a control
- D: To change the appearance of a control based on keyboard input
View Answer
A