Absrtact: In WPF, the classes related to the path have a clear hierarchy and relationship.Let me explain the relationship between them in detail: the hierarchical structure of the main class Path: This is a UIElement, an advanced control used to draw shapes.It has an important attribute, Data, which can contain any Geometry object.Path itself is responsible for rendering, including filling, stroke and other visualread the whole passage
Absrtact: In the world of Windows Presentation Foundation (WPF), style system and type metadata mechanism jointly build a powerful and flexible UI framework.This article will discuss in detail the concepts of default style key, control type metadata, explicit style and implicit style, and how they work together.DefaultStyleKeyread the whole passage
Absrtact: In music file management, correct metadata is crucial for file organization and music player display.This article will introduce how to use C # and TagLib libraries to batch process the metadata of FLAC files, which is particularly useful for scenarios where a large number of music files need to be managed.Background FLAC (Free Lossless Audio Codec) is a lossless audio coding format,read the whole passage
Absrtact: Covariance and Contravariance are concepts of type system in object-oriented programming, which are mainly used to deal with the inheritance and type conversion of generic types, interfaces or delegates.They determine how generic parameters are consistent with or opposite to the inheritance relationship of types or interfaces in the inheritance structure.oneCovariance means that when you have aread the whole passage
Absrtact: In WPF applications, we often need to handle user interaction in MVVM mode, passing both event parameters and the current data context at the same time.Microsoft.Xaml.Behaviors provides an elegant way to achieve this goal.This note will introduce how to use EventTrigger, InvokeCommandAction and customizeread the whole passage
Abstract: This document analyzes a section of code that implements custom ToggleButton animations and styles, as well as an example of remote signal control of ToggleButton.This code shows how to use XAML and C # in WPF to combine animation, style and event triggers to implement interactive controls. ToggleButton is mainly used to associate remote communication states. RemoteToggleButton is usedread the whole passage
Summary: In WPF (Windows Presentation Foundation), the appearance and behavior of controls are defined through the Control Template.TabControl and TabItem controls are no exception. Their default control templates define the structure and visual state of these controls.In practical applications, developers may find that TabI is set directlyread the whole passage
Abstract: 1The comparison between IEnumerable and List is inIn. NET, IEnumerable and List are two common collection types. They have their own application scenarios: IEnumerable<T>: Advantage: lazy evaluation, which is only calculated during iteration, and is suitable for large data sets or streaming data processing.Disadvantages: No index access, no direct addition or removal of elementsread the whole passage
Absrtact: In multithreaded programming, thread synchronization is an important means to ensure data consistency and avoid race conditions.This article will deeply discuss the two commonly used synchronization mechanisms, lock (object) and SemaphoreSlim, and analyze their differences, applicable scenarios, and how to select appropriate synchronization tools in actual development.1、 Lock (object) (or Monitor) 1. Single thread accessread the whole passage
Abstract: In modern WPF application development, Prism framework provides powerful modularity, dependency injection and MVVM support, while Microsoft.Extensions.DependencyInjection provides a simple and powerful dependency injection mechanism.Another important point is that Microsoft. Extensions. * or third-party Nuget will basically provide Miread the whole passage
Absrtact: Asynchronous data loading and management is a common requirement in modern application development.This article introduces a custom asynchronous data loading tool, AsyncLoadHelper.Through detailed design and implementation introduction, as well as practical application examples, it shows the advantages of AsyncLoadHelper in simplifying asynchronous operations, improving code readability and maintainability.In the development process, asynchronous data loading often involvesread the whole passage
Absrtact: In WPF, Adorner is a special decorative layer that can draw visual effects on UI elements.It is often used to provide visual feedback or decoration functions, such as focus indication, drag and drop effects, etc.Custom Adorne Class To create a custom Adorner, you need to inherit the Adorner class and override the OnRender method.In the OnRender method, you can makeread the whole passage
Abstract: In WPF (Windows Presentation Foundation), PreviewMouseLeftButtonDown and MouseLeftButtonDown are two commonly used mouse events. They differ in event routing strategies and processing timing.Understanding the difference between these two events and how to use them in practical applications can help developread the whole passage
Abstract: When binding, if you can specify the Path (Name) of the data source attribute, you can specify the Source and ElementName. However, sometimes the data source to be bound may not have an explicit Path (Name), so you need to specify the binding source attribute by using the RelativeSource attribute of the Binding object. In short, it is to specify the currentread the whole passage
Abstract: WPF class inheritance diagram Object class: inThe root type DispatcherObject class of all types in Net: Most objects in WPF derive from DispatcherObject, which provides basic construction for handling concurrency and threads.WPF is based on the message system implemented by the scheduler.DependencyObject class: representing a parameterread the whole passage
Abstract: Lazy<>is used to solve the asynchronous requirements in the constructor elegantly,C # starts to support delayed initialization. Through the Lazy keyword, we can declare that an object is reinitialized only when it is used for the first time. If it has not been called, it will not be initialized, which saves some unnecessary overhead and improves efficiency and thread safety. By defaultread the whole passage
Summary: Expression and ExpressionTree LINQ expressions (Expression) can assign lambda expressions to Func or Action type delegates to process collections in memory.The. NET compiler converts lambda expressions assigned to Func or Action type delegates into executable code at compile time.LINQ introduced a new technology called Eread the whole passage
Summary: LINQ operatorLINQ filter operatorWhere filter operators in LINQ filter sequences (sets) according to some given criteria.The following table lists all available filter operators in LINQ.The filter operator describes where to return a value from the collection according to the predicate function.OfType returns the value in the collection according to the specified type.However, it depends on whether they can convert to the specified type.read the whole passage
Abstract: The Quartz version is required to be higher than 3.2. Install the Install Package Quartz.Extensions.Hosting Quartz.Extensions.Hosting package, which includes Quartz.Extensions.DependencyInjection. For details, please query Quartz.Extensionsread the whole passage
Abstract: AspNetCore3.1. x runs Windows Service and installs the corresponding expansion pack Nuget install Microsoft.Extensions.Hosting.WindowsServices to modify the Pragram. cs public class program {public stread the whole passage
