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TextBoxBase Class

An abstract base class that provides functionality for text editing controls, including TextBox and RichTextBox.

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)

[LocalizabilityAttribute(LocalizationCategory.Text)]
[TemplatePartAttribute(Name = "PART_ContentHost", Type = typeof(FrameworkElement))]
public abstract class TextBoxBase : Control
This class is abstract; see Inheritance Hierarchy for derived non-abstract classes usable in XAML.

The following example demonstrates how to use the derived TextBox object in Extensible Application Markup Language (XAML).

<TextBox TextWrapping="Wrap"
         Name="myTextBox" 
         Width="500" 
         Height="200" 
         AcceptsReturn="True"
         IsUndoEnabled="True"
         VerticalScrollBarVisibility="Visible"
         HorizontalScrollBarVisibility="Auto" 
         Margin="25">

The following example demonstrates how to use the derived RichTextBox object in code.

RichTextBox richTextBox = new RichTextBox();
richTextBox.PreviewMouseUp += MouseUpHandler;
richTextBox.PreviewMouseDown += MouseDownHandler;
// Note: Event listeners can also be added using the AddHandler 
// method.

System.Object
  System.Windows.Threading.DispatcherObject
    System.Windows.DependencyObject
      System.Windows.Media.Visual
        System.Windows.UIElement
          System.Windows.FrameworkElement
            System.Windows.Controls.Control
              System.Windows.Controls.Primitives.TextBoxBase
                System.Windows.Controls.RichTextBox
                System.Windows.Controls.TextBox

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0

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