How to Remove the last char of String in C#?

Question

I have a numeric string, which may be "124322" or "1231.232" or "132123.00" . I want to remove the last char of my string (whatever it is). So I want if my string is "99234" became "9923" .

The length of string is variable. It's not constant so I can not use string.Remove or trim or some like them(I Think).

How do I achieve this?

Answer 1

YourString = YourString.Remove(YourString.Length - 1);

Answer 2

var input = "12342";
var output = input.Substring(0, input.Length - 1); 

or

var output = input.Remove(input.Length - 1);

Answer 3

newString = yourString.Substring(0, yourString.length -1);

Answer 4

If you are using string datatype, below code works:

string str = str.Remove(str.Length - 1);

---

But when you have StringBuilder , you have to specify second parameter length as well.

That is,

string newStr = sb.Remove(sb.Length - 1, 1).ToString();

To avoid below error:

Answer 5

If this is something you need to do a lot in your application, or you need to chain different calls, you can create an extension method:

public static String TrimEnd(this String str, int count)
{
    return str.Substring(0, str.Length - count);
}

and call it:

string oldString = "...Hello!";
string newString = oldString.Trim(1); //returns "...Hello"

or chained:

string newString = oldString.Substring(3).Trim(1);  //returns "Hello"