如何使用值列表读取 appsettings.json？

Question

I have the following appSettings.json file

  "UrlManagement": {
   "UrlList": [ 
   {
        "Microsoft":{
            "resource":"xyz",
             type": "iot"
        }, 

        "AWS":{
            "resource":"abc",
             "type": "storage"
        },     
   }]
  }
 }

I have class

public class UrlManagement
{
    public string CompanyName;
    public URLList UrlList;
}

public class URLList 
{
     public string Resource;
     public string Type;
}

I am trying to get these values as follow

  private List<string> GetConfigurationDictionary()
  {
        var items = this._configuration.GetSection("UrlManagement:UrlList:0").
            GetChildren().ToDictionary(x => x.Key, x => x.Value);
  }

I am getting null values for x.Value

Answer 1

You could search the section UrlManagement:UrlList:0 , like the following code:

private List<UrlManagement> GetConfigurationDictionary()
{
    List<UrlManagement> result = this._configuration
        .GetSection("UrlManagement:UrlList:0")
        .GetChildren()
        .ToDictionary(x => x.Key, x => x.Get<UrlList>())
        .Select(x => new UrlManagement { CompanyName = x.Key, UrlList = x.Value })
        .ToList();

    return result;
}

Demo

foreach (var item in result)
{
    Console.WriteLine($"{item.CompanyName} ==> {item.UrlList.Type}:{item.UrlList.Resource}");
}

Result

AWS ==> storage:abc
Microsoft ==> iot:xyz

I hope this helps you fix the issue