CODEWITHSUNDEEP
c#asp.net-mvcasp.net-coreweb-configconfigurationmanager
marcs
marcs

Reputation: 73

ConfigurationManager.AppSettings returns nothing

I'm working on an ASP.NET Core Web App (MVC). I try to read a configuration value from my Web.config file using the following code.

var myConfig = ConfigurationManager.AppSettings["myConfig"];

My Web.config file looks like the following:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.web>
        <compilation debug="true"  />
        <httpRuntime  />
    </system.web>
    <appSettings>
        <add key="myConfig" value="12345" />
    </appSettings>
</configuration>

The output in the debugger shows the following:

enter image description here

Unfortunately, no value is returned. What am I doing wrong?

Thanks a lot in advance!

Upvotes: 2

Views: 849

Answers (1)

Tupac
Tupac

Reputation: 2932

The .Net Core application settings are stored in Json (appsettings.json) format by default, and the configuration process is read:

1.I wrote these parameters in appsettings.json.

"name": "wen",
    "age": 26,
    "family": {
      "mother": {
        "name": "Test",
        "age": 55
      },
      "father": {
        "name": "Demo",
        "age": 56
      }
    },

2.And take the values as follows:

            //Add json file path
    var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json");
      
        //Create configuration root object
            var configurationRoot = builder.Build();

            //Take the name part under the configuration root
            var nameSection = configurationRoot.GetSection("name");
            //Take the family part under the configuration root
            var familySection = configurationRoot.GetSection("family");
            //Take the name part under the mother part under the family part
            var motherNameSection = familySection.GetSection("mother").GetSection("name");
            //Take the age part under the father part under the family part
            var fatherAgeSection = familySection.GetSection("father").GetSection("age");

Upvotes: 1

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