Interview Questions

1. Which of the following is an event in WPF ?

Options:

a. Bubbled

b. Tunnelled

c. Direct

d. Bubbling

Reveal Answer

2. Is it possible for a control to define a handler for an event, that the control can't itself raise?

Options:

a. Yes

b. No

Reveal Answer

3. Which of the following is predefined classes are there in the WPF Command Library?

Options:

a. ApplicationCommands

b. Navigation Commands

c. Media Commands

d. Component Commands

Reveal Answer

4. ____________ is an event fired when a key is pressed?

Options:

a. KeyUp

b. KeyPress

c. TextInput

d. KeyDown

Reveal Answer

5. ____________ is an event is fired when the result of touching down with one or more fingers on a multitouch screen.

Options:

a. key down

b. Stylus events

c. Multitouch events

d. Mouse events

Reveal Answer

6. Which of the following event fired,if you trigger the event on a Button control which is contained inside the StackPanel then it will first fire on the Button control and then on the StackPanel control and then on the next outer control

Options:

a. Stylus events

b. Bubbled Event

c. Tunneling Event

d. Direct Event/CLR Events

Reveal Answer

7. _____________ is an event work in the opposite direction.

Options:

a. Stylus events

b. Bubbled Event

c. Tunneling Event

d. Direct Event/CLR Events

Reveal Answer

8. Which of the following are WPF Built-in Commands?

Options:

a. ApplicationCommands

b. MediaCommands

c. EditingCommands

d. ComponentCommands

Reveal Answer

9. WPF Commands implements ______________ interface?

Options:

a. ICommands

b. ICommand

c. IRouted

d. IRoutedUI

Reveal Answer

10. To support routed events, the RoutedCommand class implements the ____________ interface privately.

Options:

a. ICommands

b. ICommand

c. IRouted

d. IRoutedUI

Reveal Answer

11. Which of the following namespace is used in Command Class?

Options:

a. System.Windows.RoutedCommand

b. System.Windows.Input.Command

c. System.Windows.Input.Routed

d. System.Windows.Input.RoutedCommand

Reveal Answer

Interview Questions and Answer

1. Which of the following is an event in WPF ?

2. Is it possible for a control to define a handler for an event, that the control can't itself raise?

3. Which of the following is predefined classes are there in the WPF Command Library?

4. ____________ is an event fired when a key is pressed?

5. ____________ is an event is fired when the result of touching down with one or more fingers on a multitouch screen.

6. Which of the following event fired,if you trigger the event on a Button control which is contained inside the StackPanel then it will first fire on the Button control and then on the StackPanel control and then on the next outer control

7. _____________ is an event work in the opposite direction.

8. Which of the following are WPF Built-in Commands?

9. WPF Commands implements ______________ interface?

10. To support routed events, the RoutedCommand class implements the ____________ interface privately.

11. Which of the following namespace is used in Command Class?

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