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

   1 //
   2 // System.Web.UI.WebControls.SessionParameter
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //
   7 // (C) 2003 Ben Maurer
   8 //
   9
  10 #if NET_1_2
  11 using System.Collections;
  12 using System.Collections.Specialized;
  13 using System.Text;
  14
  15 namespace System.Web.UI.WebControls {
  16         public class SessionParameter : Parameter {
  17                 protected SessionParameter (SessionParameter original) : base (original)
  18                 {
  19                         this.SessionField = original.SessionField;
  20                 }
  21
  22                 public SessionParameter (string name, string sessionField) : base (name)
  23                 {
  24                         SessionField = sessionField;
  25                 }
  26
  27                 public SessionParameter (string name, TypeCode type, string sessionField) : base (name, type)
  28                 {
  29                         SessionField = sessionField;
  30                 }
  31
  32                 protected override Parameter Clone ()
  33                 {
  34                         return new SessionParameter (this);
  35                 }
  36
  37                 protected override object Evaluate (Control control)
  38                 {
  39                         if (control == null || control.Page == null || control.Page.Session == null)
  40                                 return null;
  41
  42                         return control.Page.Session [SessionField];
  43                 }
  44
  45                 public string SessionField {
  46                         get {
  47                                 string s = ViewState ["SessionField"] as string;
  48                                 if (s != null)
  49                                         return s;
  50
  51                                 return "";
  52                         }
  53                         set {
  54                                 if (SessionField != value) {
  55                                         ViewState ["SessionField"] = value;
  56                                         OnParameterChanged ();
  57                                 }
  58                         }
  59                 }
  60         }
  61 }
  62 #endif
  63