Update C Sharp markdown. (#4260)

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Bader Bamari 2021-10-31 21:37:33 +03:00 committed by GitHub
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@ -12,9 +12,9 @@ contributors:
filename: LearnCSharp.cs
---
C# is an elegant and type-safe object-oriented language that enables developers to build a variety of secure and robust applications that run on the .NET Framework.
C# is an elegant and type-safe object-oriented language that enables developers to build a variety of secure and robust applications that run on the cross-platform .NET framework.
[Read more here.](https://docs.microsoft.com/dotnet/csharp/getting-started/introduction-to-the-csharp-language-and-the-net-framework)
[Read more here.](https://docs.microsoft.com/en-us/dotnet/csharp/tour-of-csharp/)
```c#
// Single-line comments start with //
@ -29,7 +29,7 @@ Multi-line comments look like this
/// </summary>
/// <param name="firstParam">This is some parameter documentation for firstParam</param>
/// <returns>Information on the returned value of a function</returns>
public void MethodOrClassOrOtherWithParsableHelp(string firstParam) {}
public void MethodOrClassOrOtherWithParsableHelp(string firstParam) { }
// Specify the namespaces this source code will be using
// The namespaces below are all part of the standard .NET Framework Class Library
@ -48,6 +48,10 @@ using System.Data.Entity;
// Namespaces define scope to organize code into "packages" or "modules"
// Using this code from another source file: using Learning.CSharp;
// You can also do this in C# 10, it is called file-scoped namespaces.
// namespace Learning.CSharp;
namespace Learning.CSharp
{
// Each .cs file should at least contain a class with the same name as the file.
@ -341,8 +345,17 @@ on a new line! ""Wow!"", the masses cried";
// Convert Integer To String
// Convert class has a number of methods to facilitate conversions
// String to int
// Better
bool result = int.TryParse(string, out var integer)
int.Parse(string);
// Not recommended
Convert.ToString(123);
// or
// Int to string
tryInt.ToString();
// Casting
@ -375,6 +388,9 @@ on a new line! ""Wow!"", the masses cried";
Console.Read();
} // End main method
// Available in C# 9 and later, this is basically a syntactic sugar for a class. Records are immutable*.
public record ARecord(string Csharp);
// CONSOLE ENTRY - A console application must have a main method as an entry point
public static void Main(string[] args)
{
@ -1299,16 +1315,27 @@ namespace Csharp7
```
## Topics Not Covered
New, 👍 Old, 🎈 LTS, 🔥 Cross-platform, 🎁 Windows-only
* Attributes
* async/await
* Asynchronous Programming
* Web Development
* ASP.NET MVC & WebApi (new)
* ASP.NET Web Forms (old)
* WebMatrix (tool)
* ASP.NET Core
* Desktop Development
* Windows Presentation Foundation (WPF) (new)
* Winforms (old)
* Windows Presentation Foundation 👍 🎈 🎁
* Universal Windows Platform 🎁
* Uno Platform 🔥
* WinForms 👍 🎈 🎁
* Avalonia 🔥
* WinUI 🎁
* Cross-platform Development
* Xamarin.Forms 👍
* MAUI
## Further Reading