Cannot add or remove items from newtonsoft.json.linq.jproperty.

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To add or remove items from a Newtonsoft.Json.Linq.JProperty object in C#, you can make use of the methods provided by the JProperty class. Here is an example:

// Import the necessary namespaces
using Newtonsoft.Json.Linq;

// Create a new JProperty object
JProperty property = new JProperty("name", "John");

// Get the containing JObject
JObject obj = (JObject)property.Parent;

// Add a new property to the object
obj.Add("age", 30);

// Remove an existing property from the object
obj.Remove("name");

In the example above, we first create a new JProperty object with the key “name” and the value “John”. Then, we get the parent JObject of the property using the Parent property. Next, we use the Add method of the JObject to add a new property with the key “age” and the value 30. Lastly, we remove the existing “name” property using the Remove method of the JObject.

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