Hidden WPF: Secrets for Creating Great Applications in Windows Presentation Foundation

Using the Built-In Spell Checker

You might not be aware that both the TextBox and RichTextBox controls offer a spelling checker for typed words, including a convenient pop-up menu that suggests appropriate alternatives, similar to what you see in Microsoft Word. Spell check is available only for English, German, Spanish, and French. To enable spell-checking, set the SpellCheck.IsEnabled attached property as True:

<RichTextBox Name="Rtb1" SpellCheck.IsEnabled="True"/>

Figure 3.2 shows an example of the spell check in action.

Figure 3.2. Spell check in action.

With just a property assignment, you can enable this important feature in word-processing ...