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Questions and Answers
To restrict a user's input at the level of the form, you can handle a control's ______ event.
To restrict a user's input at the level of the form, you can handle a control's ______ event.
Validating
Data validation is important because you should never ______ your users.
Data validation is important because you should never ______ your users.
trust
The ______ event is triggered when moving focus from one control to another with the CausesValidation property set to true.
The ______ event is triggered when moving focus from one control to another with the CausesValidation property set to true.
Validating
The ______ structure in C#.net is a predefined structure with its own methods.
The ______ structure in C#.net is a predefined structure with its own methods.
By setting the CancelEventArgs.Cancel property to true in the Validating event handler, you can ______ the move of focus.
By setting the CancelEventArgs.Cancel property to true in the Validating event handler, you can ______ the move of focus.
Which namespace is the Label class defined in?
Which namespace is the Label class defined in?
Which class does the Button class inherit from?
Which class does the Button class inherit from?
How can a Button be clicked?
How can a Button be clicked?
Which control is commonly used to display text in a set location on the page?
Which control is commonly used to display text in a set location on the page?
Which controls are reusable components that encapsulate user interface functionality in client side Windows applications?
Which controls are reusable components that encapsulate user interface functionality in client side Windows applications?
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Study Notes
Form Input Restriction
- To restrict user input, handle a control's Validating event.
Data Validation
- Data validation is crucial because you should never trust your users.
Control Events
- The Validating event is triggered when moving focus from one control to another with the CausesValidation property set to true.
- Setting the CancelEventArgs.Cancel property to true in the Validating event handler cancels the move of focus.
C# Structures
- The Bitmap structure in C#.net is a predefined structure with its own methods.
.NET Framework
- The Label class is defined in the System.Windows.Forms namespace.
- The Button class inherits from the ButtonBase class.
Button Control
- A Button can be clicked using the Click event.
Displaying Text
- The Label control is commonly used to display text in a set location on the page.
Reusable Components
- UserControls are reusable components that encapsulate user interface functionality in client-side Windows applications.
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