尝试在 C#/JSON 中加载和保存对象

Question

Section giving difficulties

const string _studentRepositoryPath = @"students.json"; 

        static void Save() {
            using (var file = File.CreateText(_studentRepositoryPath))
        {
            file.WriteAsync(JsonSerializer.Serialize(studentsList));
        }
        }
            static List<Student> Read() {
            return JsonSerializer.Deserialize<List<Student>>(File.ReadAllText(_studentRepositoryPath));
        }
        static List<Student> studentsList =  new List<Student>();

Trying to get the Data to Save into a JSON file so when the program is reopened students can be search.

Issue: JSON file updates after creating a student object but when exiting and reopening the program it says students do not exist.

Answer 1

You need to await it

public static async Task Save() 
{
    using (var file = File.CreateText(_studentRepositoryPath))
    {
        await file.WriteAsync(JsonSerializer.Serialize(studentsList));
    }
}

or just use Write