Export (0) Print
Expand All
0 out of 1 rated this helpful - Rate this topic

TextBoxBase Class

Implements the basic functionality required by text controls.

For a list of all members of this type, see TextBoxBase Members.

System.Object
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Windows.Forms.Control
            System.Windows.Forms.TextBoxBase
               System.Windows.Forms.RichTextBox
               System.Windows.Forms.TextBox

[Visual Basic]
MustInherit Public Class TextBoxBase
   Inherits Control
[C#]
public abstract class TextBoxBase : Control
[C++]
public __gc __abstract class TextBoxBase : public Control
[JScript]
public abstract class TextBoxBase extends Control

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.

Remarks

This class implements the core features of text manipulation controls, such as TextBox and RichTextBox. These include text selection, Clipboard functionality, multiline text control support, and many events.

Notes to Inheritors:  You do not typically inherit from TextBoxBase. To create your own text control class, inherit from TextBox or RichTextBox.

Example

[Visual Basic, C#, C++] The following example uses TextBox, a derived class, to create a multiline TextBox control with vertical scroll bars. This example also uses the AcceptsTab, AcceptsReturn, and WordWrap properties to make the multiline text box control useful for creating text documents.

[Visual Basic] 
Public Sub CreateMyMultilineTextBox()
    ' Create an instance of a TextBox control.
    Dim textBox1 As New TextBox()
    
    ' Set the Multiline property to true.
    textBox1.Multiline = True
    ' Add vertical scroll bars to the TextBox control.
    textBox1.ScrollBars = ScrollBars.Vertical
    ' Allow the RETURN key in the TextBox control.
    textBox1.AcceptsReturn = True
    ' Allow the TAB key to be entered in the TextBox control.
    textBox1.AcceptsTab = True
    ' Set WordWrap to true to allow text to wrap to the next line.
    textBox1.WordWrap = True
    ' Set the default text of the control.
    textBox1.Text = "Welcome!"
End Sub


[C#] 
public void CreateMyMultilineTextBox()
 {
    // Create an instance of a TextBox control.
    TextBox textBox1 = new TextBox();
    
    // Set the Multiline property to true.
    textBox1.Multiline = true;
    // Add vertical scroll bars to the TextBox control.
    textBox1.ScrollBars = ScrollBars.Vertical;
    // Allow the RETURN key in the TextBox control.
    textBox1.AcceptsReturn = true;
    // Allow the TAB key to be entered in the TextBox control.
    textBox1.AcceptsTab = true;
    // Set WordWrap to true to allow text to wrap to the next line.
    textBox1.WordWrap = true;
    // Set the default text of the control.
    textBox1.Text = "Welcome!";
 }
 

[C++] 
public:
    void CreateMyMultilineTextBox() {
        // Create an instance of a TextBox control.
        TextBox __gc *textBox1 = new TextBox();

        // Set the Multiline property to true.
        textBox1->Multiline = true;
        // Add vertical scroll bars to the TextBox control.
        textBox1->ScrollBars = ScrollBars::Vertical;
        // Allow the RETURN key in the TextBox control.
        textBox1->AcceptsReturn = true;
        // Allow the TAB key to be entered in the TextBox control.
        textBox1->AcceptsTab = true;
        // Set WordWrap to true to allow text to wrap to the next line.
        textBox1->WordWrap = true;
        // Set the default text of the control.
        textBox1->Text = S"Welcome!";
    };

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Windows.Forms

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: System.Windows.Forms (in System.Windows.Forms.dll)

See Also

TextBoxBase Members | System.Windows.Forms Namespace | TextBox | RichTextBox

Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft. All rights reserved.