c# how to set string list

// Create a list of strings using 'new List<string>{}'
List<string> stringList = new List<string>{"string1", "string2"};

var list = new List<string> {
  "test1",
  "test2",
  "test3"
};

// This will create a new list called 'nameOfList':
var nameOfList = new List<string> 
{
  "value1",
  "value2",
  "value3"
};

fileList.Where(item => filterList.Contains(item))