TextBoxBase Class (System.Windows.Controls.Primitives)

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TextBoxBase Class

.NET Framework Class Library

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)

Syntax

Visual Basic (Declaration)

<LocalizabilityAttribute(LocalizationCategory.Text)> _
<TemplatePartAttribute(Name := "PART_ContentHost", Type := GetType(FrameworkElement))> _
Public MustInherit Class TextBoxBase _
    Inherits Control

Visual Basic (Usage)

Dim instance As TextBoxBase

[LocalizabilityAttribute(LocalizationCategory.Text)]
[TemplatePartAttribute(Name = "PART_ContentHost", Type = typeof(FrameworkElement))]
public abstract class TextBoxBase : Control

Visual C++

[LocalizabilityAttribute(LocalizationCategory::Text)]
[TemplatePartAttribute(Name = L"PART_ContentHost", Type = typeof(FrameworkElement))]
public ref class TextBoxBase abstract : public Control

JScript

public abstract class TextBoxBase extends Control

XAML

This class is abstract; see Inheritance Hierarchy for derived non-abstract classes usable in XAML.

Examples

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.

Inheritance Hierarchy

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

Thread Safety

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

Platforms

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.

Version Information

.NET Framework

Supported in: 3.5, 3.0

Reference

TextBoxBase Members

System.Windows.Controls.Primitives Namespace

TextBox

RichTextBox

Other Resources

TextBoxBase Methods and Properties Sample