100 lines
2.7 KiB
C#
100 lines
2.7 KiB
C#
//
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// System.Web.UI.WebControls.SessionParameter
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//
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// Authors:
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// Ben Maurer (bmaurer@users.sourceforge.net)
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//
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// (C) 2003 Ben Maurer
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections;
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using System.Collections.Specialized;
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using System.Data;
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using System.Text;
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using System.ComponentModel;
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namespace System.Web.UI.WebControls {
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[DefaultPropertyAttribute ("SessionField")]
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public class SessionParameter : Parameter {
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public SessionParameter () : base ()
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{
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}
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protected SessionParameter (SessionParameter original) : base (original)
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{
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this.SessionField = original.SessionField;
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}
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public SessionParameter (string name, string sessionField) : base (name)
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{
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SessionField = sessionField;
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}
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public SessionParameter (string name, TypeCode type, string sessionField) : base (name, type)
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{
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SessionField = sessionField;
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}
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public SessionParameter (string name, DbType dbType, string sessionField) : base (name, dbType)
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{
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SessionField = sessionField;
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}
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protected override Parameter Clone ()
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{
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return new SessionParameter (this);
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}
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protected internal
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override object Evaluate (HttpContext context, Control control)
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{
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if (context == null || context.Session == null)
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return null;
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return context.Session [SessionField];
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}
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[DefaultValueAttribute ("")]
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[WebCategoryAttribute ("Parameter")]
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public string SessionField {
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get {
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string s = ViewState ["SessionField"] as string;
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if (s != null)
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return s;
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return "";
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}
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set {
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if (SessionField != value) {
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ViewState ["SessionField"] = value;
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OnParameterChanged ();
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}
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}
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}
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}
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}
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