Skip to main content

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

How to: Register Custom Control to Enable Spell Checking

The following example describes how to implement the spell checker in custom or standard text controls (TextBox or RichTextBox).

#Register Standard Text Control

  1. In XAML, configure the text control’s DXSpellChecker behavior.

    xmlns:mvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
    xmlns:dxsch="http://schemas.devexpress.com/winfx/2008/xaml/spellchecker">
    <TextBox TextWrapping="Wrap" Text="TextBox" Grid.Column="1">            
                <mvvm:Interaction.Behaviors>
                    <dxsch:DXSpellChecker CheckAsYouType="True" ShowSpellCheckMenu="True" Culture="en-US"/>
                </mvvm:Interaction.Behaviors>
    </TextBox>
    
  2. In code-behind, register the control by calling the SpellingSettings.RegisterTextControl method.

    SpellingSettings.RegisterTextControl(typeof(TextBox));
    

#Register the RichEditControl descendant

  1. In XAML, configure the custom control’s RichEditSpellChecker behavior.

    xmlns:mvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
    xmlns:dxsch="http://schemas.devexpress.com/winfx/2008/xaml/spellchecker">
      <mvvm:Interaction.Behaviors>
          <dxsch:RichEditSpellChecker CheckAsYouType="True" ShowSpellCheckMenu="True" Culture="en-US"/>
      </mvvm:Interaction.Behaviors>
    
  2. To enable the Spelling dialog for the custom control, call the SpellCheckTextControllersManager.Default.RegisterClass method. This method requires the DevExpress.XtraSpellChecker.Native namespace reference. Call the SpellCheckTextBoxBaseFinderManager.Default.UnregisterClass method to disable spelling check.

    using DevExpress.XtraSpellChecker.Native;
    //...
    
    SpellCheckTextControllersManager.Default.RegisterClass(typeof(MyRichEditControl), typeof(DevExpress.XtraRichEdit.SpellChecker.RichEditSpellCheckController));