PostBackTrigger.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / Orcas / RTM / ndp / fx / src / xsp / System / Web / Extensions / ui / PostBackTrigger.cs / 2 / PostBackTrigger.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI { 
    using System; 
    using System.ComponentModel;
    using System.Diagnostics.CodeAnalysis; 
    using System.Globalization;
    using System.Security.Permissions;
    using System.Web;
    using System.Web.UI; 
    using System.Web.Resources;
    using System.Web.Util; 
 
    [
    AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal), 
    AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)
    ]
    public class PostBackTrigger : UpdatePanelControlTrigger {
 
        private IScriptManagerInternal _scriptManager;
 
        public PostBackTrigger() { 
        }
 
        internal PostBackTrigger(IScriptManagerInternal scriptManager) {
            _scriptManager = scriptManager;
        }
 
        [
        SuppressMessage("Microsoft.Naming", "CA1706:ShortAcronymsShouldBeUppercase"), 
        TypeConverter("System.Web.UI.Design.PostBackTriggerControlIDConverter, " + 
            AssemblyRef.SystemWebExtensionsDesign)
        ] 
        public new string ControlID {
            get {
                return base.ControlID;
            } 
            set {
                base.ControlID = value; 
            } 
        }
 
        internal IScriptManagerInternal ScriptManager {
            get {
                if (_scriptManager == null) {
                    Page page = Owner.Page; 
                    if (page == null) {
                        throw new InvalidOperationException(AtlasWeb.Common_PageCannotBeNull); 
                    } 
                    _scriptManager = UI.ScriptManager.GetCurrent(page);
                    if (_scriptManager == null) { 
                        throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.Common_ScriptManagerRequired, Owner.ID));
                    }
                }
                return _scriptManager; 
            }
        } 
 
        protected internal override void Initialize() {
            base.Initialize(); 

            Control associatedControl = FindTargetControl(false);

            ScriptManager.RegisterPostBackControl(associatedControl); 
        }
 
        protected internal override bool HasTriggered() { 
            // This type of trigger never triggers since it causes a regular postback,
            // where all UpdatePanels render anyway. 
            return false;
        }

        [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] 
        public override string ToString() {
            if (String.IsNullOrEmpty(ControlID)) { 
                return "PostBack"; 
            }
            else { 
                return "PostBack: " + ControlID;
            }
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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