How to save the results of the application not in the database, but in a file?

Question

Database

Good afternoon Khabrovites! There is an idea for an application for my own enterprise (I myself am not a specialized programmer). I have a paper version of equipment accounting for employees, I want to convert it into a number. The idea is as follows:
There is an employee, assigned to him: a mouse, keyboard, laptop, phone, SIM card, etc.
I will make an application in which it will be possible to keep this account, I don’t want to use MSSQL or similar things, but I want the file system, because there will be no more than 60 records and I don’t see the point in the database. And so actually question: How to organize saving of 50 instances of class Employee in a file and at program opening it to read and load in application? Previously only worked with MSSQL and EF6

Answer 1

Work with SQLite and don't make up nonsense.

Answer 2

Once upon a time, when I wrote a project in visual studio c # winform, I used dataset classes, which are essentially tables in RAM, the entire interface is almost written with a mouse, if necessary, save data to disk to the entire dataset WriteXml and when ReadXml starts, and that's all saved and loaded ... I never even looked inside, When you write a tiny application, which in half a year you won’t even remember because it’s not necessary, why even bother with databases.
I mean, if serialization to a file, in any format, solves your problem and does not add new ones, then why not.
This simple approach saves development time with a very inefficient way of storing data.
But there is a danger that storage formats from different versions of the .net framework will not be compatible.