1.1. C# introduction

发布时间 :2023-10-12 23:00:08 UTC      

C# is a simple, modern, general-purpose, object-oriented programming language developed by Microsoft and approved by Ecma and ISO.

C# was created by Anders Hejlsberg and His team developed it durinthe development of the .Net framework.

C# is designed for the common language infrastructure (CLI). CLI consists of executable code and a runtime environment that allows the use of a variety of high-level languages on different computer platforms and architectures.

This tutorial will teach you the basics of C # programming, as well as various advanced concepts related to the C # programming language.

This tutorial helps beginners understand the basics of C # programming. After completing this tutorial, you will reach an intermediate level of C# programming.

C# programming is based on the C and C++ programming languages, so if you have a basic understanding of C and C++ programming, it will help you learn the C# programming language.

Example

using System;
namespace HelloWorldApplication
{
    /* Name of the class: HelloWorld */
    class HelloWorld
    {
        /* main function */
        static void Main(string[] args)
        {
            /* the first c# programe. */
            Console.WriteLine("Hello World!");
            Console.ReadKey();
        }
    }
}

Here are the reasons why C# has become a widely used professional language:

  • A modern, universal programming language.

  • Object-oriented.

  • Component oriented.

  • Easy to learn.

  • Structured language.

  • It produces efficient programs.

  • It can be compiled on multiple computer platforms.

  • .Net part of the framework.

1.1.1. The powerful programming function of C# #

Although the idea of C# is very close to the traditional high-level languages C and C++, it is an object-oriented programming language, but it is very similar to Java and has many powerful programming functions, so it is favored by the majority of programmers.

Some important features of C# are listed below:

  • Boolean condition

  • Automatic garbage collection

  • Standard Library

  • Component version

  • Property and event

  • Delegate and event management

  • Easy to use generics

  • Indexers

  • Conditional compilation

  • Simple multithreading

  • LINQ and Lambda expressions

  • Integrated Windows

1.1.2. C# useful resources #

This tutorial lists C# websites, books, and articles.

  • C# Programming Guide introduces the key features of the C# language and how to use the .NET framework accesses the details of C#.

  • Visual Studio downloads the latest version of Visual Studio as a C# integrated development environment.

  • Go Mono- Mono is a software platform that allows developers to simply create cross-platform applications.

  • C Sharp (programming language)-Wikipedia interprets C# (programming language).

Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.