Reflection and Properties The reflection and feature technologies provided by .net framework can be used to check data repeatability to decide whether to write a certain piece of data to the database table. When an entity is required to write a piece of data to the database, many times it is necessary to check whether the data is a duplicate. For example, for a newly created person, assuming that the ID number cannot be repeated, the ID number of the newly created person is the same as the one in the person table. If one or more items are repeated, you need to give a prompt or take other measures, such as updating or deleting. Method: In this demand scenario, you can use the features and reflection technology provided by .net framework to solve such needs. The specific process: Secondly, reference the newly written attribute class in the entity class to construct its unique identifier (one or more attribute combinations); Finally, when checking the data repeatability, use the method provided by Attribute to obtain the data of each entity class. Uniquely identifying attribute(s). Attribute[] GetCustomAttributes(modeltype, inheri
1. .NET Framework - Sample code for applying attributes and reflection to check data uniqueness
Introduction: The reflection and characteristic technology provided by .net framework can be used to check data repeatability to decide whether to write a certain piece of data to the database table.
2. Introduction to the "Appearance Pattern" example of learning Python design patterns
Introduction: The appearance pattern of design patterns in Python advocates dividing code into multiple modules to reduce coupling. The following uses examples to illustrate application characteristics: when many complex and small functions need to be called.
3. Oracle performance misunderstanding
Introduction: In order to improve performance, we provide methods for the Oracle database itself Or solutions have been tried a lot, mainly including: Shared server mode (MTS) Clustering technology (Clustering), RAC partition parallel processing (mainly parallel queries) These features provided by Oracle are indeed used to improve performance, but we Often neglect the analysis of their own application characteristics
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The combination of C# and .NET provides developers with a powerful programming environment. 1) C# supports polymorphism and asynchronous programming, 2) .NET provides cross-platform capabilities and concurrent processing mechanisms, which makes them widely used in desktop, web and mobile application development.

.NETFramework is a software framework, and C# is a programming language. 1..NETFramework provides libraries and services, supporting desktop, web and mobile application development. 2.C# is designed for .NETFramework and supports modern programming functions. 3..NETFramework manages code execution through CLR, and the C# code is compiled into IL and runs by CLR. 4. Use .NETFramework to quickly develop applications, and C# provides advanced functions such as LINQ. 5. Common errors include type conversion and asynchronous programming deadlocks. VisualStudio tools are required for debugging.

C# is a modern, object-oriented programming language developed by Microsoft, and .NET is a development framework provided by Microsoft. C# combines the performance of C and the simplicity of Java, and is suitable for building various applications. The .NET framework supports multiple languages, provides garbage collection mechanisms, and simplifies memory management.

C# and .NET runtime work closely together to empower developers to efficient, powerful and cross-platform development capabilities. 1) C# is a type-safe and object-oriented programming language designed to integrate seamlessly with the .NET framework. 2) The .NET runtime manages the execution of C# code, provides garbage collection, type safety and other services, and ensures efficient and cross-platform operation.

To start C#.NET development, you need to: 1. Understand the basic knowledge of C# and the core concepts of the .NET framework; 2. Master the basic concepts of variables, data types, control structures, functions and classes; 3. Learn advanced features of C#, such as LINQ and asynchronous programming; 4. Be familiar with debugging techniques and performance optimization methods for common errors. With these steps, you can gradually penetrate the world of C#.NET and write efficient applications.

The relationship between C# and .NET is inseparable, but they are not the same thing. C# is a programming language, while .NET is a development platform. C# is used to write code, compile into .NET's intermediate language (IL), and executed by the .NET runtime (CLR).

C#.NET is still important because it provides powerful tools and libraries that support multiple application development. 1) C# combines .NET framework to make development efficient and convenient. 2) C#'s type safety and garbage collection mechanism enhance its advantages. 3) .NET provides a cross-platform running environment and rich APIs, improving development flexibility.

C#.NETisversatileforbothwebanddesktopdevelopment.1)Forweb,useASP.NETfordynamicapplications.2)Fordesktop,employWindowsFormsorWPFforrichinterfaces.3)UseXamarinforcross-platformdevelopment,enablingcodesharingacrossWindows,macOS,Linux,andmobiledevices.


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