2 // System.Web.UI.WebControls.SessionParameter
5 // Ben Maurer (bmaurer@users.sourceforge.net)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Collections;
33 using System.Collections.Specialized;
36 using System.ComponentModel;
38 namespace System.Web.UI.WebControls {
40 [DefaultPropertyAttribute ("SessionField")]
41 public class SessionParameter : Parameter {
43 public SessionParameter () : base ()
47 protected SessionParameter (SessionParameter original) : base (original)
49 this.SessionField = original.SessionField;
52 public SessionParameter (string name, string sessionField) : base (name)
54 SessionField = sessionField;
57 public SessionParameter (string name, TypeCode type, string sessionField) : base (name, type)
59 SessionField = sessionField;
62 public SessionParameter (string name, DbType dbType, string sessionField) : base (name, dbType)
64 SessionField = sessionField;
67 protected override Parameter Clone ()
69 return new SessionParameter (this);
76 override object Evaluate (HttpContext ctx, Control control)
78 if (ctx == null || ctx.Session == null)
81 return ctx.Session [SessionField];
84 [DefaultValueAttribute ("")]
85 [WebCategoryAttribute ("Parameter")]
86 public string SessionField {
88 string s = ViewState ["SessionField"] as string;
95 if (SessionField != value) {
96 ViewState ["SessionField"] = value;
97 OnParameterChanged ();