Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / BindingsCollection.cs / 1 / BindingsCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using Microsoft.Win32; using System.Diagnostics; using System.ComponentModel; using System.Collections; ////// /// [DefaultEvent("CollectionChanged")] public class BindingsCollection : System.Windows.Forms.BaseCollection { private ArrayList list; private CollectionChangeEventHandler onCollectionChanging; private CollectionChangeEventHandler onCollectionChanged; // internalonly internal BindingsCollection() { } ///Represents a collection of data bindings on a control. ///public override int Count { get { if (list == null) { return 0; } return base.Count; } } /// /// /// /// protected override ArrayList List { get { if (list == null) list = new ArrayList(); return list; } } ////// Gets the bindings in the collection as an object. /// ////// /// public Binding this[int index] { get { return (Binding) List[index]; } } ///Gets the ///at the specified index. // internalonly internal protected void Add(Binding binding) { CollectionChangeEventArgs ccevent = new CollectionChangeEventArgs(CollectionChangeAction.Add, binding); OnCollectionChanging(ccevent); AddCore(binding); OnCollectionChanged(ccevent); } // internalonly /// /// /// /// protected virtual void AddCore(Binding dataBinding) { if (dataBinding == null) throw new ArgumentNullException("dataBinding"); List.Add(dataBinding); } ////// Adds a ////// to the collection. /// /// /// [SRDescription(SR.collectionChangingEventDescr)] public event CollectionChangeEventHandler CollectionChanging { add { onCollectionChanging += value; } remove { onCollectionChanging -= value; } } ////// Occurs when the collection is about to change. /// ////// /// [SRDescription(SR.collectionChangedEventDescr)] public event CollectionChangeEventHandler CollectionChanged { add { onCollectionChanged += value; } remove { onCollectionChanged -= value; } } // internalonly ////// Occurs when the collection is changed. /// ///internal protected void Clear() { CollectionChangeEventArgs ccevent = new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null); OnCollectionChanging(ccevent); ClearCore(); OnCollectionChanged(ccevent); } // internalonly /// /// /// /// protected virtual void ClearCore() { List.Clear(); } ////// Clears the collection of any members. /// ////// /// protected virtual void OnCollectionChanging(CollectionChangeEventArgs e) { if (onCollectionChanging != null) { onCollectionChanging(this, e); } } ////// Raises the ///event. /// /// /// protected virtual void OnCollectionChanged(CollectionChangeEventArgs ccevent) { if (onCollectionChanged != null) { onCollectionChanged(this, ccevent); } } ////// Raises the ///event. /// // internalonly internal protected void Remove(Binding binding) { CollectionChangeEventArgs ccevent = new CollectionChangeEventArgs(CollectionChangeAction.Remove, binding); OnCollectionChanging(ccevent); RemoveCore(binding); OnCollectionChanged(ccevent); } /// // internalonly internal protected void RemoveAt(int index) { Remove(this[index]); } // internalonly /// /// /// /// protected virtual void RemoveCore(Binding dataBinding) { List.Remove(dataBinding); } ////// Removes the specified ///from the collection. /// // internalonly internal protected bool ShouldSerializeMyAll() { return Count > 0; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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