C#ObservableCollection与List资源-CSDN下载

共361个文件

cache：144个

cs：93个

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需积分: 22 99 浏览量 2022-04-20 23:30:30 上传评论收藏 703KB ZIP 举报

在.NET框架中，C#提供了多种数据集合类用于存储和管理对象，其中`ObservableCollection`和`List<T>`是两种常见的类型。它们都是用于创建可变列表，但有着不同的应用场景和特性。我们来详细了解`List<T>`。`List<T>`是.NET Framework中的`System.Collections.Generic`命名空间下的一员，它是实现`IList<T>`接口的泛型类。`List<T>`的核心功能是提供了一个动态数组，允许我们方便地添加、删除、查找和遍历元素。它的优点在于性能高效，对于添加、删除和索引访问元素的操作都非常快速，因为这些都是直接操作内部数组。然而，`List<T>`并不自动通知任何视图或绑定到它的控件有关其内容的变化，所以如果需要将`List<T>`用在数据绑定的场景中，必须手动触发相关的改变事件。相比之下，`ObservableCollection<T>`是WPF和UWP应用程序中广泛使用的数据集合类，它位于`System.Collections.ObjectModel`命名空间中。`ObservableCollection<T>`继承自`Collection<T>`，并实现了`INotifyPropertyChanged`和`INotifyCollectionChanged`接口。这意味着当集合中的元素发生添加、删除、移动或替换时，它会自动发出通知，使得任何绑定到这个集合的UI控件可以实时更新。这对于构建数据驱动的用户界面非常有用，特别是在MVVM（Model-View-ViewModel）设计模式中，`ObservableCollection<T>`是连接模型数据和视图的关键。下面，我们将更深入地探讨这两个类的区别和用法： 1. **通知机制**：`ObservableCollection<T>`的`INotifyCollectionChanged`接口使它能自动通知观察者（如UI控件）关于集合的变化。而`List<T>`则不具备这种功能，需要开发者手动处理这些事件。 2. **适用场景**：`List<T>`适用于需要高性能数组操作且不涉及数据绑定的场合；`ObservableCollection<T>`则适合数据绑定和UI实时更新的需求。 3. **性能**：在进行大量的添加、删除操作时，由于`ObservableCollection<T>`需要发出通知，性能可能略逊于`List<T>`。但这种差异在大多数情况下是可以忽略的。 4. **扩展性**：`ObservableCollection<T>`的设计使其易于与其他.NET框架组件配合，例如数据绑定和依赖属性。 5. **内存占用**：`ObservableCollection<T>`比`List<T>`多出一些额外的接口和事件处理代码，因此在内存占用上可能稍高一些。在实际开发中，选择`ObservableCollection<T>`还是`List<T>`主要取决于项目需求。如果项目涉及数据绑定和UI的实时更新，那么`ObservableCollection<T>`无疑是更好的选择。反之，如果只需要一个简单的、高性能的列表容器，`List<T>`就能满足需求。在提供的文件名中，"BasicRegionNavigation.sln"通常代表一个Visual Studio解决方案文件，"BasicRegionNavigation"可能是项目的名称，而"ModuleA"可能是一个模块或类库的名称。这些文件与`ObservableCollection`和`List<T>`的讨论直接关联性不大，但可以推测这是一个可能使用了数据绑定和区域导航的C#项目，其中可能涉及到`ObservableCollection`的使用。在这样的项目中，`ObservableCollection`可以帮助实现视图与视图模型之间的数据同步，确保UI的实时更新。

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C# ObservableCollection与List （361个子文件）

DataListView.baml 3KB

GoDisplayView.baml 2KB

MainWindow.baml 2KB

ViewB.baml 1012B

ViewA.baml 1012B

BasicRegionNavigation_h4rpumer_wpftmp.assets.cache 3KB

BasicRegionNavigation_mqzzfw2d_wpftmp.assets.cache 3KB

BasicRegionNavigation_reyoofnz_wpftmp.assets.cache 3KB

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ModuleA.assets.cache 1KB

project.nuget.cache 1KB

project.nuget.cache 612B

BasicRegionNavigation_MarkupCompile.i.cache 414B

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ModuleA_MarkupCompile.i.cache 269B

ModuleA_MarkupCompile.cache 261B

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共 361 条

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F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\BasicRegionNavigation.pdb F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\Microsoft.Xaml.Behaviors.dll F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\Prism.dll F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\Prism.Unity.Wpf.dll F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\Prism.Wpf.dll F:\03WPF+C#_Book\Prism-Samples-Wpf-master\Prism-Samples-Wpf-master\18-NavigationCallback\BasicRegionNavigation\bin\Debug\netcoreapp3.1\Unity.Abstractions.dll 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