2 // System.Web.UI.WebControls.RadioButton.cs
5 // Dick Porter <dick@ximian.com>
7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections.Specialized;
30 using System.ComponentModel;
31 using System.Security.Permissions;
33 namespace System.Web.UI.WebControls {
36 [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
37 [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
39 [Designer ("System.Web.UI.Design.WebControls.CheckBoxDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
41 [SupportsEventValidation]
43 public class RadioButton : CheckBox , IPostBackDataHandler
45 public RadioButton () : base ("radio")
53 [WebSysDescription ("")]
54 [WebCategory ("Behavior")]
55 public virtual string GroupName
58 return (ViewState.GetString ("GroupName",
62 ViewState["GroupName"] = value;
66 internal override string NameAttribute
69 string unique = UniqueID;
70 string gn = GroupName;
73 colon = unique.IndexOf (':');
77 return unique.Substring (0, colon + 1) + gn;
81 internal string ValueAttribute {
83 return ViewState.GetString ("Value", String.Empty);
86 ViewState["Value"] = value;
90 internal override void InternalAddAttributesToRender (HtmlTextWriter w)
92 base.InternalAddAttributesToRender (w);
93 string val = ValueAttribute;
94 if (val == null || val.Length == 0)
96 w.AddAttribute (HtmlTextWriterAttribute.Value, val);
104 override void OnPreRender (EventArgs e)
106 base.OnPreRender (e);
112 bool LoadPostData (string postDataKey, NameValueCollection postCollection)
114 bool old_checked = Checked;
116 if (postCollection[NameAttribute] == postDataKey) {
122 if (old_checked != Checked) {
132 void RaisePostDataChangedEvent ()
135 if (CausesValidation)
136 Page.Validate (ValidationGroup);
138 OnCheckedChanged (EventArgs.Empty);
141 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
143 return LoadPostData (postDataKey, postCollection);