mcs/class/System.Web/System.Web.UI.WebControls/Literal.cs

   1 //
   2 // System.Web.UI.WebControls.Literal.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //\r
  11 \r
  12 using System;\r
  13 using System.Web;\r
  14 using System.Web.UI;\r
  15 using System.ComponentModel;\r
  16 \r
  17 namespace System.Web.UI.WebControls\r
  18 {\r
  19         [DefaultProperty("Text")]\r
  20         [ControlBuilder(typeof(LiteralControlBuilder))]\r
  21         [DataBindingHandler("System.Web.UI.Design.TextDataBindingHandler, " + Consts.AssemblySystem_Design)]\r
  22         public class Literal : Control\r
  23         {\r
  24                 public Literal () : base ()\r
  25                 {\r
  26                 }\r
  27
  28                 [DefaultValue (""), Bindable (true), WebCategory ("Appearance")]
  29                 [WebSysDescription ("The text for the literal WebControl.")]\r
  30                 public string Text\r
  31                 {\r
  32                         get {\r
  33                                 object o = ViewState ["Text"];\r
  34                                 return (o == null) ? String.Empty : (string) o;\r
  35                         }\r
  36 \r
  37                         set { ViewState ["Text"] = value; }\r
  38                 }\r
  39 \r
  40                 protected override ControlCollection CreateControlCollection ()\r
  41                 {\r
  42                         return new EmptyControlCollection (this);\r
  43                 }\r
  44 \r
  45                 protected override void AddParsedSubObject (object obj)\r
  46                 {\r
  47                         if (!(obj is LiteralControl))\r
  48                                 throw new HttpException (HttpRuntime.FormatResourceString (\r
  49                                                         "Cannot_Have_Children_Of_Type", "Literal",\r
  50                                                         obj.GetType ().Name.ToString ()));\r
  51 \r
  52                         Text = ((LiteralControl) obj).Text;\r
  53                 }\r
  54 \r
  55                 protected override void Render (HtmlTextWriter writer)\r
  56                 {\r
  57                         if (Text.Length > 0)\r
  58                                 writer.Write (Text);\r
  59                 }\r
  60         }\r
  61 }\r
  62 \r