ASP.NET TextBox Control

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# ASP.NET TextBox Control

Web Server Controls

## Definition and Usage

The TextBox control is used to create a text box where the user can input text.

## Properties

Property | Description | .NET
--- | --- | ---
AutoCompleteType | Specifies the AutoComplete behavior of a TextBox | 2.0
AutoPostBack | A Boolean value that specifies whether the control is automatically posted back to the server when the contents change or not. Default is false | 1.0
CausesValidation | Specifies if a page is validated when a Postback occurs | 2.0
Columns | The width of the textbox | 1.0
MaxLength | The maximum number of characters allowed in the textbox | 1.0
ReadOnly | Specifies whether or not the text in the text box can be changed | 1.0
Rows | The height of the textbox (only used if TextMode="Multiline") | 1.0
runat | Specifies that the control is a server control. Must be set to "server" |
TagKey |  |
Text | The contents of the textbox | 1.0
TextMode | Specifies the behavior mode of a TextBox control (SingleLine, MultiLine or Password) | 1.0
ValidationGroup | The group of controls that is validated when a Postback occurs |
Wrap | A Boolean value that indicates whether the contents of the textbox should wrap or not | 1.0
OnTextChanged | The name of the function to be executed when the text in the textbox has changed |

## Web Control Standard Properties

AccessKey, Attributes, BackColor, BorderColor, BorderStyle, BorderWidth, CssClass, Enabled, Font, EnableTheming, ForeColor, Height, IsEnabled, SkinID, Style, TabIndex, ToolTip, Width

For a full description, go to Web Control Standard Attributes.

## Control Standard Properties

AppRelativeTemplateSourceDirectory, BindingContainer, ClientID, Controls, EnableTheming, EnableViewState, ID, NamingContainer, Page, Parent, Site, TemplateControl, TemplateSourceDirectory, UniqueID, Visible

For a full description, go to Control Standard Attributes.

## Examples

Textbox
Declare one TextBox control, one Button control, and one Label control in an .aspx file. When the submit button is triggered, the submit subroutine is executed. The submit subroutine writes a text to the Label control.

Textbox 2
Declare one TextBox control, one Button control, and one Label control in an .aspx file. When the submit button is triggered, the submit subroutine is executed. The submit subroutine copies the contents of the textbox to the Label control.

Web Server Controls

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