访问库项目中的配置object（appsettings.json）

Question

I started a .net core web api project. I have one solution with the main project and many other project like DAL, Common etc.

I want to create a class in the Common project that will share configuration settings(appsettings.json) between my different library project. So, How can I acces Iconfiguration from that class?

Is this a good way to do this? Or should I create a class into the main project to get configuration data from other project?

Answer 1

One way to do it would be to create a Configuration Model based on your section/subsection from your appsettings.json file, add the configuration section in your Startup.cs class, then you can use the built-in dependency injection to inject the configuration anywhere you would need it.

For Example

appsettings.json:

{
  "MyConfiguration" : {
     "Configuration1" : "1",
   }
}

Your configuration model:

public class MyConfiguration 
{
   public int Configuration1 { get; set; }
}

Then in the StartupClass in the ConfigureServices method you have to add

services.Configure<MyConfiguration>(configuration.GetSection("MyConfiguration"));
services.AddOptions();

And when you want to use that Configuration somewhere in the code, you would just inject it in the constructor like so:

public class SomeClass 
{
  private MyConfiguration MyConfiguration { get; }

  public SomeClass(IOptions<MyConfiguration> myConfigurationOptions)
  {
    MyConfiguration = myConfigurationOptions.Value;
  }

//... more code
}

Then you can access it

MyConfiguration.Configuration1

Answer 2

You can add the file as a link in yout project.

1. Right click your project, then select "Add" ->"Existing Item..."
2. Choose the file that you want to add to the solution
3. Instead of hitting Enter or clicking the Add button, you need to click the down-arrow icon at the right edge of the Add button , and select " Add As Link ".

Please refer to this link .