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Please take a look at the <code>BindableCollection<T></code> from Caliburn.Micro library: <pre><code>/// <summary> /// A base collection class that supports automatic UI thread marshalling. /// </summary> /// <typeparam name="T">The type of elements contained in the collection.</typeparam> #if !SILVERLIGHT && !WinRT [Serializable] #endif public class BindableCollection<T> : ObservableCollection<T>, IObservableCollection<T> { /// <summary> /// Initializes a new instance of the <see cref = "Caliburn.Micro.BindableCollection{T}" /> class. /// </summary> public BindableCollection() { IsNotifying = true; } /// <summary> /// Initializes a new instance of the <see cref = "Caliburn.Micro.BindableCollection{T}" /> class. /// </summary> /// <param name = "collection">The collection from which the elements are copied.</param> /// <exception cref = "T:System.ArgumentNullException"> /// The <paramref name = "collection" /> parameter cannot be null. /// </exception> public BindableCollection(IEnumerable<T> collection) : base(collection) { IsNotifying = true; } #if !SILVERLIGHT && !WinRT [field: NonSerialized] #endif bool isNotifying; //serializator try to serialize even autogenerated fields /// <summary> /// Enables/Disables property change notification. /// </summary> #if !WinRT [Browsable(false)] #endif public bool IsNotifying { get { return isNotifying; } set { isNotifying = value; } } /// <summary> /// Notifies subscribers of the property change. /// </summary> /// <param name = "propertyName">Name of the property.</param> #if WinRT || NET45 public virtual void NotifyOfPropertyChange([CallerMemberName]string propertyName = "") { #else public virtual void NotifyOfPropertyChange(string propertyName) { #endif if(IsNotifying) Execute.OnUIThread(() => OnPropertyChanged(new PropertyChangedEventArgs(propertyName))); } /// <summary> /// Raises a change notification indicating that all bindings should be refreshed. /// </summary> public void Refresh() { Execute.OnUIThread(() => { OnPropertyChanged(new PropertyChangedEventArgs("Count")); OnPropertyChanged(new PropertyChangedEventArgs("Item[]")); OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); }); } /// <summary> /// Inserts the item to the specified position. /// </summary> /// <param name = "index">The index to insert at.</param> /// <param name = "item">The item to be inserted.</param> protected override sealed void InsertItem(int index, T item) { Execute.OnUIThread(() => InsertItemBase(index, item)); } /// <summary> /// Exposes the base implementation of the <see cref = "InsertItem" /> function. /// </summary> /// <param name = "index">The index.</param> /// <param name = "item">The item.</param> /// <remarks> /// Used to avoid compiler warning regarding unverifiable code. /// </remarks> protected virtual void InsertItemBase(int index, T item) { base.InsertItem(index, item); } #if NET || WP8 || WinRT /// <summary> /// Moves the item within the collection. /// </summary> /// <param name="oldIndex">The old position of the item.</param> /// <param name="newIndex">The new position of the item.</param> protected sealed override void MoveItem(int oldIndex, int newIndex) { Execute.OnUIThread(() => MoveItemBase(oldIndex, newIndex)); } /// <summary> /// Exposes the base implementation fo the <see cref="MoveItem"/> function. /// </summary> /// <param name="oldIndex">The old index.</param> /// <param name="newIndex">The new index.</param> /// <remarks>Used to avoid compiler warning regarding unverificable code.</remarks> protected virtual void MoveItemBase(int oldIndex, int newIndex) { base.MoveItem(oldIndex, newIndex); } #endif /// <summary> /// Sets the item at the specified position. /// </summary> /// <param name = "index">The index to set the item at.</param> /// <param name = "item">The item to set.</param> protected override sealed void SetItem(int index, T item) { Execute.OnUIThread(() => SetItemBase(index, item)); } /// <summary> /// Exposes the base implementation of the <see cref = "SetItem" /> function. /// </summary> /// <param name = "index">The index.</param> /// <param name = "item">The item.</param> /// <remarks> /// Used to avoid compiler warning regarding unverifiable code. /// </remarks> protected virtual void SetItemBase(int index, T item) { base.SetItem(index, item); } /// <summary> /// Removes the item at the specified position. /// </summary> /// <param name = "index">The position used to identify the item to remove.</param> protected override sealed void RemoveItem(int index) { Execute.OnUIThread(() => RemoveItemBase(index)); } /// <summary> /// Exposes the base implementation of the <see cref = "RemoveItem" /> function. /// </summary> /// <param name = "index">The index.</param> /// <remarks> /// Used to avoid compiler warning regarding unverifiable code. /// </remarks> protected virtual void RemoveItemBase(int index) { base.RemoveItem(index); } /// <summary> /// Clears the items contained by the collection. /// </summary> protected override sealed void ClearItems() { Execute.OnUIThread(ClearItemsBase); } /// <summary> /// Exposes the base implementation of the <see cref = "ClearItems" /> function. /// </summary> /// <remarks> /// Used to avoid compiler warning regarding unverifiable code. /// </remarks> protected virtual void ClearItemsBase() { base.ClearItems(); } /// <summary> /// Raises the <see cref = "E:System.Collections.ObjectModel.ObservableCollection`1.CollectionChanged" /> event with the provided arguments. /// </summary> /// <param name = "e">Arguments of the event being raised.</param> protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e) { if (IsNotifying) { base.OnCollectionChanged(e); } } /// <summary> /// Raises the PropertyChanged event with the provided arguments. /// </summary> /// <param name = "e">The event data to report in the event.</param> protected override void OnPropertyChanged(PropertyChangedEventArgs e) { if (IsNotifying) { base.OnPropertyChanged(e); } } /// <summary> /// Adds the range. /// </summary> /// <param name = "items">The items.</param> public virtual void AddRange(IEnumerable<T> items) { Execute.OnUIThread(() => { var previousNotificationSetting = IsNotifying; IsNotifying = false; var index = Count; foreach(var item in items) { InsertItemBase(index, item); index++; } IsNotifying = previousNotificationSetting; OnPropertyChanged(new PropertyChangedEventArgs("Count")); OnPropertyChanged(new PropertyChangedEventArgs("Item[]")); OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); }); } /// <summary> /// Removes the range. /// </summary> /// <param name = "items">The items.</param> public virtual void RemoveRange(IEnumerable<T> items) { Execute.OnUIThread(() => { var previousNotificationSetting = IsNotifying; IsNotifying = false; foreach(var item in items) { var index = IndexOf(item); if (index >= 0) { RemoveItemBase(index); } } IsNotifying = previousNotificationSetting; OnPropertyChanged(new PropertyChangedEventArgs("Count")); OnPropertyChanged(new PropertyChangedEventArgs("Item[]")); OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); }); } /// <summary> /// Called when the object is deserialized. /// </summary> /// <param name="c">The streaming context.</param> [OnDeserialized] public void OnDeserialized(StreamingContext c) { IsNotifying = true; } /// <summary> /// Used to indicate whether or not the IsNotifying property is serialized to Xml. /// </summary> /// <returns>Whether or not to serialize the IsNotifying property. The default is false.</returns> public virtual bool ShouldSerializeIsNotifying() { return false; } } </code></pre> <a href="https://caliburnmicro.codeplex.com/SourceControl/latest#src/Caliburn.Micro.Silverlight/INPC.cs" rel="nofollow">Source</a> PS. Just take in mind that this class use some other classes from Caliburn.Micro so that you could either copy/pase all dependencies by your-self - OR - if you are not using any other application frameworks - just reference the library binary and give it a chance.
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