The SmtpClient class allows applications to send email using Simple Mail Transfer Protocol (SMTP). Namespace: system.net.mail Properties ClientCertificates: Specifies which certificate should be used to establish a Secure Socket Layer (SSL) connection Credentials: Gets or sets the credentials used to authenticate the sender DeliveryFormat: Gets or sets the credentials used to authenticate the sender Delivery format for SmtpClient to send emails DeliveryMethod: Specifies how the sent email will handle the message EnableSsl: Specifies whether SmtpClient uses Secure Sockets Layer (SSL) encrypted connections Host: Gets or sets one or more hosts used for SMTP transaction recording PickupDirectoryLocation: Gets or sets the folder in which the application saves mail for processing by the local SMTP server Port: Gets or sets the port used for SMTP transactions ServicePoint: Gets the network connection used to transfer the email Targ
##Introduction: Allow applications Send email using Simple Mail Transfer Protocol (SMTP).
2. Mysql master-slave monitoring script includes automatic configuration of Gmail email client
Introduction: Commonly used script backups Automatically configure msmtp and use mail to send emails#!/bin/bashSRC=/usr/local/srccd$SRC#installmsmtpclient#ifourwantsupportTLS/SS..
Introduction: Send email in jsp 1. We can send it through any JSP engine (such as JSWDK) that supports the sun.net.smtp package in the sun specification mail. (Warning: Use the built-in internal Sun specification package, which will affect the portability of your jsp program.) The following scriptlet uses the SmtpClient class to send emails in the jsp file. 2. JavaMail is the official Java mail
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C# and .NET provide powerful features and an efficient development environment. 1) C# is a modern, object-oriented programming language that combines the power of C and the simplicity of Java. 2) The .NET framework is a platform for building and running applications, supporting multiple programming languages. 3) Classes and objects in C# are the core of object-oriented programming. Classes define data and behaviors, and objects are instances of classes. 4) The garbage collection mechanism of .NET automatically manages memory to simplify the work of developers. 5) C# and .NET provide powerful file operation functions, supporting synchronous and asynchronous programming. 6) Common errors can be solved through debugger, logging and exception handling. 7) Performance optimization and best practices include using StringBuild

.NETFramework is a cross-language, cross-platform development platform that provides a consistent programming model and a powerful runtime environment. 1) It consists of CLR and FCL, which manages memory and threads, and FCL provides pre-built functions. 2) Examples of usage include reading files and LINQ queries. 3) Common errors involve unhandled exceptions and memory leaks, and need to be resolved using debugging tools. 4) Performance optimization can be achieved through asynchronous programming and caching, and maintaining code readability and maintainability is the key.

Reasons for C#.NET to remain lasting attractive include its excellent performance, rich ecosystem, strong community support and cross-platform development capabilities. 1) Excellent performance and is suitable for enterprise-level application and game development; 2) The .NET framework provides a wide range of class libraries and tools to support a variety of development fields; 3) It has an active developer community and rich learning resources; 4) .NETCore realizes cross-platform development and expands application scenarios.

Design patterns in C#.NET include Singleton patterns and dependency injection. 1.Singleton mode ensures that there is only one instance of the class, which is suitable for scenarios where global access points are required, but attention should be paid to thread safety and abuse issues. 2. Dependency injection improves code flexibility and testability by injecting dependencies. It is often used for constructor injection, but it is necessary to avoid excessive use to increase complexity.

C#.NET is widely used in the modern world in the fields of game development, financial services, the Internet of Things and cloud computing. 1) In game development, use C# to program through the Unity engine. 2) In the field of financial services, C#.NET is used to develop high-performance trading systems and data analysis tools. 3) In terms of IoT and cloud computing, C#.NET provides support through Azure services to develop device control logic and data processing.

.NETFrameworkisWindows-centric,while.NETCore/5/6supportscross-platformdevelopment.1).NETFramework,since2002,isidealforWindowsapplicationsbutlimitedincross-platformcapabilities.2).NETCore,from2016,anditsevolutions(.NET5/6)offerbetterperformance,cross-

The C#.NET developer community provides rich resources and support, including: 1. Microsoft's official documents, 2. Community forums such as StackOverflow and Reddit, and 3. Open source projects on GitHub. These resources help developers improve their programming skills from basic learning to advanced applications.

The advantages of C#.NET include: 1) Language features, such as asynchronous programming simplifies development; 2) Performance and reliability, improving efficiency through JIT compilation and garbage collection mechanisms; 3) Cross-platform support, .NETCore expands application scenarios; 4) A wide range of practical applications, with outstanding performance from the Web to desktop and game development.


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