Using the <i class="emphasis">TextBox</i> Class

Using the TextBox Class

We've already used the System.Web.UI.WebControls.TextBox class quite a bit; this class displays a text box in a Web form. Here is the hierarchy of this class:

Object
   Control
      WebControl
         TextBox

You can find the notable public properties of TextBox objects in Table 15.8 and the notable events in Table 15.9. (Note there's no table of methods here—TextBox inherits all its methods from the WebControl class.) Note that as with other Web server controls, I am not listing the notable properties, methods, and events this class inherits from the Control and WebControl classes—you can find them in Tables 15.1 to 15.5.

Table 15.8: Noteworthy public properties of *TextBox* objects.
Property	Means
AutoPostBack	Gets/sets whether events will be automatically posted back to the server.
Columns	Gets/sets the text box's width in characters.
MaxLength	Gets/sets the maximum number of characters that may be displayed in the text box.
ReadOnly	Gets/sets whether the text box is read-only.
Rows	Gets/sets a multiline text box's display height.
Text	Gets/sets the text in a text box.
TextMode	Gets/sets whether a text box should be single line, multiline, or a password control.
Wrap	Gets/sets whether text wraps in the text box.

Table 15.9: Noteworthy public events of TextBox objects.
Event	Means
TextChanged	Occurs when the text in the text box is changed.