无法写入json变量c#获取错误

Question

当我试图序列化或更新json文件时，会得到一个错误。我只想在json文件中更新"balance"的值，然后我得到了主意here.我似乎不能让它为我的项目工作。当我检查Users.json文件时，它不会改变。

这是我的代码：

Users.json

[
  {
    "id": 1,
    "username": "sachin",
    "password": "sachin1",
    "firstName": "Sachin",
    "lastName": "Karnik",
    "birthdate": "2011-6-14",
    "balance": 20000,
    "cardNumber": 12345
  },
  {
    "id": 2,
    "username": "dina",
    "password": "dina1",
    "firstName": "Dina",
    "lastName": "Meyers",
    "birthdate": "2012-8-20",
    "balance": 20000,
    "cardNumber": 23456
  },
  {
    "id": 3,
    "username": "andy",
    "password": "andy1",
    "firstName": "Andy",
    "lastName": "Rose",
    "birthdate": "2010-2-11",
    "balance": 20000,
    "cardNumber": 34567
  }
]

Menu.cs

public static void BankMenu(object? balance, object? user)
  {
  
   User[]? Users = JsonConvert.DeserializeObject<User[]>(Login.jsonResponse);
   int bal = Convert.ToInt32(balance);
   int money;
   
 try{
   money = ValidateAmountInput(bal, user);
       if (money <= bal && money != 0)
       {
        bal -= money;
        foreach (var usr in Users!)
        {
         if (usr.FirstName == user?.ToString())
         {
          usr.Balance = bal;

         }
        }
        var json = JsonConvert.SerializeObject(Users, Formatting.Indented);
        File.WriteAllText(Login.jsonResponse, json);
  }
   }
   catch(System.Exception e)
   {
      WriteLine(e);
   }

我的错误

Answer 1

你有个窃听器

  File.WriteAllText(Login.jsonResponse, json);

而不是ogin.jsonResponse，您必须使用文件路径

File.WriteAllText(<full file path\Users.json>, json);