https://github.com/alexscigalszky/interfaceextentions

Examples of extension methods of parametrized interfaces
https://github.com/alexscigalszky/interfaceextentions

csharp-code extensionmethods interfaces parametrized

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Examples of extension methods of parametrized interfaces

• Host: GitHub
• URL: https://github.com/alexscigalszky/interfaceextentions
• Owner: AlexScigalszky
• Created: 2023-08-13T21:50:05.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-08-13T21:56:56.000Z (over 1 year ago)
• Last Synced: 2024-11-05T18:12:09.248Z (2 months ago)
• Topics: csharp-code, extensionmethods, interfaces, parametrized
• Language: C#
• Homepage:
• Size: 7.81 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Extention methods using Classes and Interfaces

This repository shows how with C# we can extend parametrized classes and interfaces

## IMPORTANT

Look at the double implementation in the class ´Wrapper´. That's the key.

```C#

public class Wrapper : 

        IWrapper, // Interface inheritance, parameterized Interface

        IWrapper // Interface inheritance, parameterized Class

        // no matter if Request implements IRequest.

    {

        

    }

```

If the class Wrapper doesn't implement the class parametrized interfaces, the tests ´Use_Interface_Interface_Extension_Test´ and ´Use_Interface_Class_Extension_Test´ won't compile.

C# doesn't know how to cast th line

```C#

IWrapper wrapper = new Wrapper();

```

And you will see the error

```

Error	CS0266	

Cannot implicitly convert

type 'InterfaceExtentions.Impl.Wrapper' 

to 'InterfaceExtentions.Interfaces.IWrapper'. 

An explicit conversion exists (are you missing a cast?)

```