使用C＃将列表保存到文本文件中

Question

I am developing an Address Book using C#.

i have a list which is displayed in an DataGridView but I want to save the list and not the datagridview into a text file.

When the form loads i have the code:

string[] parts = line.Split(','); // the word line throws an error saying that it does not exist in the current context
Person p = new Person(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6]);
AddressBook.Persons.Add(p);

I then have this code in the datalayer to save the list:

string filePath = @"c:\test.txt";
p.ToString(); // it does not recognise p

Can anyone help?

Answer 1

A simple and easy to use method for writing into a file is File.WriteAllText( filePath, p.ToString()). You have also to override the method ToString in the class Person, so you can return the information you want to save to file, otherwise it will, as default, return the class' name as string. If you need a speedest way you should use a StreamWriter.