In .NET even basic datatypes like string or int are an object.

This means that even these datatypes can (an have) own methods. One method common to every object is AsString() . This method sometimes returns useful data:

local nInt as int
local oDate as DateTime
local lLogic as logic
 
nInt := 1234
oDate := DateTime.Now
lLogic := true
System.Console.WriteLine( nInt:ToString() )
System.Console.WriteLine( oDate:ToString() )
System.Console.WriteLine( lLogic:ToString() )

returns

12345
28.01.2018 17:51:37
true

But sometimes, in more complex classes, the ToString() method returns only the name of the class, and it is to you to define such a method that returns a more meaningful string value.

Regarding the methods of such a class, you should give a look to the System.String class - you will be surprised how many different and useful methods this class already has!