This class represents the text box web control and provides properties to configure text wrapping, the maximum accepted length, and the size in fixed character widths and row-heights (Columns and Rows). This class also includes a single event, TextChanged, which will fire only when the text box loses focus and a post back is generated.

The text box is abstracted away from any specific HTML element. Depending on your settings, ASP.NET will use the appropriate <input type="text">, <input type="password">, or <textarea> HTML tag.

public class TextBox : WebControl, System.Web.UI.IPostBackDataHandler {
// Public Constructors
   public TextBox( );
// Public Instance Properties
   public virtual bool AutoPostBack{set; get; }
   public virtual int Columns{set; get; }
   public virtual int MaxLength{set; get; }
   public virtual bool ReadOnly{set; get; }
   public virtual int Rows{set; get; }
   public virtual string Text{set; get; }
   public virtual TextBoxMode TextMode{set; get; }
   public virtual bool Wrap{set; get; }
// Protected Instance Properties
   protected override HtmlTextWriterTag TagKey{get; }            // overrides WebControl
// Protected Instance Methods
   protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer); // overrides WebControl
   protected override void AddParsedSubObject(object obj);      // overrides System.Web.UI.Control
   protected override void OnPreRender(EventArgs e);            // overrides System.Web.UI.Control
   protected virtual void OnTextChanged(EventArgs e);
   protected override void Render(System.Web.UI.HtmlTextWriter writer);   // overrides WebControl
// Events
   public event EventHandler TextChanged;
}

Hierarchy

System.Object System.Web.UI.Control(System.ComponentModel.IComponent, System.IDisposable, System.Web.UI.IParserAccessor, System.Web.UI.IDataBindingsAccessor) WebControl(System.Web.UI.IAttributeAccessor) TextBox(System.Web.UI.IPostBackDataHandler)