如何从嵌套的JObject获取特定属性的值

Question

I have a JObject:

{
  "config": {
    "DataSource": {
      "connectionString": "Localserver",

      "sqlExpression": "select id As 'key', logHeader As 'Label' from Log"
    }
  }
}

How can I get the value of connectionString and sqlExpression ?

I am trying:

JObject result = new JObject(
             data["DataSource"]
             .SelectMany(jt => jt["properties"]));

string connectionString = result.GetValue("connectionString").ToString();
string sqlExpression = result.GetValue("sqlExpression").ToString();

However, I'm not getting the results. Any suggestions?

Answer 1

For this simple JSON structure you can use the SelectToken method navigate to each property value:

JObject result = JObject.Parse(json);
string connectionString = (string)result.SelectToken("config.DataSource.connectionString");
string sqlExpression = (string)result.SelectToken("config.DataSource.sqlExpression");

Fiddle: https://dotnetfiddle.net/00X6kX