如何在C#中修改JSON内容？

using System.IO;

string jsonFilePath = "path/to/your/json/file.json";
string jsonString;

using (StreamReader reader = new StreamReader(jsonFilePath))
{
    jsonString = reader.ReadToEnd();
}

using Newtonsoft.Json;

var jsonObject = JsonConvert.DeserializeObject<dynamic>(jsonString);

jsonObject.propertyName = "new value";

string modifiedJsonString = JsonConvert.SerializeObject(jsonObject, Formatting.Indented);

using (StreamWriter writer = new StreamWriter(jsonFilePath))
{
    writer.Write(modifiedJsonString);
}