2 // System.Web.UI.WebControls.QueryStringParameter
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
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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;
35 using System.ComponentModel;
37 namespace System.Web.UI.WebControls {
39 [DefaultPropertyAttribute ("QueryStringField")]
40 public class QueryStringParameter : Parameter {
42 public QueryStringParameter () : base ()
46 protected QueryStringParameter (QueryStringParameter original) : base (original)
48 this.QueryStringField = original.QueryStringField;
52 public QueryStringParameter (string name, string queryStringField) : base (name)
54 QueryStringField = queryStringField;
57 public QueryStringParameter (string name, TypeCode type, string queryStringField) : base (name, type)
59 QueryStringField = queryStringField;
62 protected override Parameter Clone ()
64 return new QueryStringParameter (this);
67 protected override object Evaluate (HttpContext ctx, Control control)
69 if (control == null || ctx.Request == null)
72 return ctx.Request.QueryString [QueryStringField];
75 [DefaultValueAttribute ("")]
76 public string QueryStringField {
78 string s = ViewState ["QueryStringField"] as string;
85 if (QueryStringField != value) {
86 ViewState ["QueryStringField"] = value;
87 OnParameterChanged ();