2 // AsyncPostBackTrigger.cs
5 // Igor Zelmanovich <igorz@mainsoft.com>
7 // (C) 2007 Mainsoft, Inc. http://www.mainsoft.com
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Collections.Generic;
33 using System.ComponentModel;
34 using System.Reflection;
36 namespace System.Web.UI
38 public class AsyncPostBackTrigger : UpdatePanelControlTrigger
40 static readonly MethodInfo _eventHandler = typeof (AsyncPostBackTrigger).GetMethod ("OnEvent");
44 public new string ControlID {
46 return base.ControlID;
49 base.ControlID = value;
54 [Category ("Behavior")]
55 public string EventName {
57 if (_eventName == null)
66 protected internal override bool HasTriggered () {
67 throw new NotImplementedException ();
70 protected internal override void Initialize () {
71 Control c = FindTargetControl (false);
72 ScriptManager sm = Owner.ScriptManager;
73 string eventName = EventName;
75 if (String.IsNullOrEmpty (eventName)) {
76 object [] o = c.GetType ().GetCustomAttributes (typeof (DefaultEventAttribute), true);
78 throw new InvalidOperationException (String.Format ("Control '{0}' has no default event defined", c.ID));
79 eventName = ((DefaultEventAttribute) o [0]).Name;
82 EventInfo evi = c.GetType ().GetEvent (eventName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase);
84 throw new InvalidOperationException (String.Format ("Could not find an event named '{0}' on associated control '{1}' for the trigger in UpdatePanel '{2}'.", eventName, c.ID, Owner.ID));
88 d = Delegate.CreateDelegate (evi.EventHandlerType, this, _eventHandler);
90 catch (ArgumentException) {
91 throw new InvalidOperationException (String.Format ("The event '{0}' in '{1}' for the control '{2}' does not match a standard event handler signature.", eventName, c.GetType (), c.ID));
94 evi.AddEventHandler (c, d);
96 sm.RegisterAsyncPostBackControl (c);
99 public void OnEvent (object sender, EventArgs e) {
103 public override string ToString () {
104 return String.Format ("AsyncPostBack: {0}.{1}", ControlID, EventName);