CSHARP

c# get last two characters of string

// str = "Hello world";
var result = str.Substring(str.Length - 2);
// result = "ld"

last two characters of string c#

string str = "Hello World";
string substr = str.Substring(str.Length - 2);

c# get last 3 characters of string

var result = input.Substring(input.Length - 3);