Prevent Spelling Mistakes in Your WPF Applications

Prevent Spelling Mistakes in Your WPF Applications

Syncfusion WPF SpellChecker control helps you detect spelling mistakes in your application and fix them. It has a built-in dictionary for English. However, you can also check the spelling of text in other languages by integrating dictionary files in standard formats such as Hunspell, Ispell, and Ope

Syncfusion WPF SpellChecker control helps you detect spelling mistakes in your application and fix them. It has a built-in dictionary for English. However, you can also check the spelling of text in other languages by integrating dictionary files in standard formats such as HunspellIspell, and OpenOffice.

You can also add custom words that are not available in the dictionary file by using the custom dictionary. You can even add multiple dictionaries specific to different cultures, and switch between them at runtime.

SpellChecker also provides intuitive ways to fix spelling mistakes by listing suggestions in a context menu and dialog box, similar to Microsoft Office applications.

Let’s proceed with using the Syncfusion WPF SpellChecker to check the spelling of text in a text editor control.

Configuring SpellChecker in a text editor control

Follow these steps to configure SpellChecker in a text editor control:

Step 1: Create the project

Create a new WPF project in Visual Studio.

Step 2: Add the control manually using code

To add the Spell Checker manually in C#, follow these steps:

  1. Install the Syncfusion.SfSpellChecker.WPF NuGet package in your project.
  2. Include the namespace Syncfusion.Windows.Controls by using the following code.
  3. 1
  4. **using** Syncfusion.Windows.Controls;
  5. Create an instance of the SpellChecker control by using the following code.
  6. 1
  7. SfSpellChecker SpellChecker = **new** SfSpellChecker();

Let’s design a view with TextBox and Button controls. Here, we are going to perform a spell checking in the TextBox control when a button is clicked.

Step 3: **[Configure the SfSpellChecker to the text editor**](https://help.syncfusion.com/wpf/spellchecker/getting-started#adding-wpf-sfspellchecker-to-an-application)

  1. Create a class implementing the IEditorProperties interface which acts as a bridge between the editor and the SpellChecker control. Refer to the following code. Here, I am naming the class TextSpellEditor.

  2. //Creating TextSpell Editor

  3. **public** **class** TextSpellEditor : IEditorProperties

  4. {

  5. /// <summary>

  6. /// Initializes the TextBox control.

  7. /// </summary>

  8. **private** TextBox textbox;

  9. /// <summary>

  10. /// Gets or sets the control whose text is to be spell checked.

  11. /// </summary>

  12. **public** Control ControlToSpellCheck

  13. {

  14. **get** {

  15. **return** textbox;

  16. }

  17. **set** {

  18. textbox = value **as** TextBox;

  19. }

  20. }

  21. /// <summary>

  22. /// Initializes the new instance of the TextSpellEditor class.

  23. /// </summary>

  24. /// <param name="control"></param>

  25. **public** TextSpellEditor(Control control)

  26. {

  27. ControlToSpellCheck = control;

  28. }

  29. /// <summary>

  30. /// Gets or sets the current misspelled word.

  31. /// </summary>

  32. **public** **string** SelectedText

  33. {

  34. **get** {

  35. **return** textbox.SelectedText;

  36. }

  37. **set** {

  38. textbox.SelectedText = value;

  39. }

  40. }

  41. /// <summary>

  42. /// Gets or sets the text to be spell checked by the SfSpellChecker.

  43. /// </summary>

  44. **public** **string** Text

  45. {

  46. **get** {

  47. **return** textbox.Text;

  48. }

  49. **set**

  50. {

  51. textbox.Text = value;

  52. }

  53. }

  54. /// <summary>

  55. /// Selects the word specified by the index.

  56. /// </summary>

  57. /// <param name="selectionStart">Zero-based index of the word in the text.</param>

  58. /// <param name="selectionLength">length of the word to be selected.</param>

  59. **public** **void** Select(``**int** selectionStart, **int** selectionLength)

  60. {

  61. textbox.Select(selectionStart, selectionLength);

  62. }

  63. **public** **bool** HasMoreTextToCheck()

  64. {

  65. **return** **false**``;

  66. }

  67. **public** **void** Focus()

  68. {

  69. textbox.Focus();

  70. }

  71. **public** **void** UpdateTextField()

  72. {

  73. **throw** **new** NotImplementedException();

  74. }

  75. }

  76. Create and add the instance of TextBox (the editor control to be spell checked) and Button to the window as shown in the following code example.

syncfusion ui wpf desktop rich text editor spell checker

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