Skip to Main Content
Programming WPF, 2nd Edition
book

Programming WPF, 2nd Edition

by Chris Sells, Ian Griffiths
August 2007
Intermediate to advanced content levelIntermediate to advanced
864 pages
25h 52m
English
O'Reilly Media, Inc.
Content preview from Programming WPF, 2nd Edition

Buttons

Buttons are controls that a user can click. The result of the click is up to the application developer, but there are common expectations depending on the type of button. For example, clicking on a CheckBox or RadioButton expresses a choice, and does not normally have any immediate effect beyond visually reflecting that choice. By contrast, clicking on a normal Button usually has some immediate effect.

Using buttons is straightforward. Example 5-1 shows markup for a Button element.

Example 5-1. Markup for a Button

<Button Click="ButtonClicked">Button</Button>

The contents of the element (the text "Button" in this case) are used as the button caption. An XML attribute specifies the handler for the Click event. This indicates that the code behind for the XAML must contain a method with the name specified in the markup, such as that shown in Example 5-2 (we could also attach the event handler by giving the button an x:Name and using normal C# event handling syntax).

Example 5-2. Handling a Click event

void ButtonClicked(object sender, RoutedEventArgs e) {
    MessageBox.Show("Button was clicked");
}

Alternatively, a button's Command property may be set, in which case the specified command will be invoked when the button is clicked. Example 5-3 shows a button that invokes the standard ApplicationCommands.Copy command.

Example 5-3. Invoking a command with a Button

<Button Command="Copy">Copy</Button>

Figure 5-2 shows the three button types provided by WPF, which offer the same behavior as ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Programming C#, 4th Edition

Programming C#, 4th Edition

Jesse Liberty
Programming C# 10

Programming C# 10

Ian Griffiths

Publisher Resources

ISBN: 9780596510374Supplemental ContentErrata Page