Load and save a list(of ABC) to file

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C#

.NET-Core2.1

I just want to reload the list(of ) the next time I start the program.

How can I simply save and load multiple lists.

for example:
ListLoad (string FilePath, object List1);
ListSave (string FilePath, object List1);

What I have tried:

<pre>private List<Witnesses> SR = new List<Witnesses>();

<pre>public void ArraySave2(string filename, object obj)
{
File.WriteAllText(filename, JsonConvert.SerializeObject(obj));
}
public void ArrayRead2(string filename, object obj)
{
obj = JsonConvert.DeserializeObject<List>(File.ReadAllText(filename));
}