Programming Tutorials

Getting values from appsettings.json ASP.NET

By: Linda Ng in Asp.net Tutorials on 2023-06-01  

To access values from appsettings.json in an ASP.NET Core application, you can use the IConfiguration interface.

Here's an example of how you can access the values from appsettings.json in a static class:

  1. In your static class, add a property of type IConfiguration and a static constructor to initialize the configuration:
    public static class MyStaticClass
    {
        public static IConfiguration Configuration { get; }
    
        static MyStaticClass()
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
    
            Configuration = builder.Build();
        }
    
        // Add your static methods or properties here
    }
    
  2. Now, you can access the configuration values in your static class using the Configuration property. For example:
    public static class MyStaticClass
    {
        public static IConfiguration Configuration { get; }
    
        static MyStaticClass()
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
    
            Configuration = builder.Build();
        }
    
        public static string GetSomeValue()
        {
            return Configuration["SomeKey"];
        }
    }
    

In the above example, SomeKey is the key in appsettings.json that corresponds to the value you want to retrieve.

Make sure that your appsettings.json file is located in the root directory of your project and has the correct structure.

Note: Static classes can have limitations in terms of testability and dependency injection. It's generally recommended to use dependency injection to inject the IConfiguration into the classes where you need it, rather than relying on a static class.






Add Comment

* Required information
1000

Comments

No comments yet. Be the first!

Most Viewed Articles (in Asp.net )

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

What is Code-Behind in ASP.net

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory

Getting values from appsettings.json ASP.NET

Enabling IIS 7.0 with ASP.NET

Passing a model globally to all Views in your Asp.net webapp

Getting started with ASP

Pagination in ASP.net core application

Development Mode in IIS for Asp.net projects

Button that is only clickable when the checkbox is checked

Pass the same model to multiple views within the same controller

Call an Action in a controller when user clicks a button in View

Latest Articles (in Asp.net)

Things to note when changing a function to async in your controller

AmbiguousMatchException: The request matched multiple endpoints.

Call an Action in a controller when user clicks a button in View

Button that is only clickable when the checkbox is checked

Pass the same model to multiple views within the same controller

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Passing a model globally to all Views in your Asp.net webapp

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Pagination in ASP.net core application

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory

Related Tutorials

Things to note when changing a function to async in your controller

AmbiguousMatchException: The request matched multiple endpoints.

Call an Action in a controller when user clicks a button in View

Button that is only clickable when the checkbox is checked

Pass the same model to multiple views within the same controller

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Passing a model globally to all Views in your Asp.net webapp

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Pagination in ASP.net core application

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory