I need to remove two characters from the end of the string.
So:
string = "Hello Marco !"
must be
Hello Marco
How can I do it?
Add a comment
|
9 Answers
You can do:
string str = "Hello Marco !";
str = str.Substring(0, str.Length - 2);
4 Comments
Alex Mendez
@Alexander I don't know what language you are speaking of, but in .net c#, it is a valid method. It is also the appropriate case.
Alexander
I am terribly sorry - i haven't noticed c# has been mentioned. I was just looking for the method signature and found this one :)
Maritim
This solves the OP's case, but it doesn't actually answer the question of how you run a substring from the end of the string. Your answer cuts off two letters from the end of the string.
Alex Mendez
@Maritim The OP's question was a bit confusing, but his explanation says and i quote "I need to remove two characters from the end of the string".
s = s.Substring(0, Math.Max(0, s.Length - 2))
to include the case where the length is less than 2
Comments
C# 8 introduced indices and ranges which allow you to write
str[^2..]
This is equivalent to
str.Substring(str.Length - 2, 2)
In fact, this is almost exactly what the compiler will generate, so there's no overhead.
Note that you will get an ArgumentOutOfRangeException if the range isn't within the string.
4 Comments
Kyle Delaney
9 years later, I'm one day late :)
Alamakanambra
This is the correct solution in modern C#
Noman_1
Even if it's what I was really looking for, the question wants the first n-2 chars, not the last 2 chars.
Métoule
To get the first n - 2 chars, you can use
str[..^2]. 2 doesn't even need to be a constant, so you can also write str[..^"test".Length]What about
string s = "Hello Marco !";
s = s.Substring(0, s.Length - 2);
Comments
I will trim the end for unwanted characters:
s = s.TrimEnd(' ', '!');
To ensure it works even with more spaces. Or better if you want to ensure it works always, since the input text seems to come from the user:
Regex r = new Regex(@"(?'purged'(\w|\s)+\w)");
Match m = r.Match("Hello Marco !!");
if (m.Success)
{
string result = m.Groups["purged"].Value;
}
With this you are safer. A purge based on the fact the last two characters has to be removed is too weak.
Comments
Did you check the MSDN documentation (or IntelliSense)? How about the String.Substring method?
You can get the length using the Length property, subtract two from this, and return the substring from the beginning to 2 characters from the end.
For example:
string str = "Hello Marco !";
str = str.Substring(0, str.Length - 2);
Comments
If it's an unknown amount of strings you could trim off the last character by doing s = s.TrimEnd('','!').Trim();
Have you considered using a regular expression? If you only want to allow alpha numeric characters you can use regex to replace the symbols, What if instead of a ! you get a %?
Comments
Try this:
var s = "Hello Marco !";
var corrected = s.Substring(0, s.Length - 2);
Comments
string s = "Hello Marco !";
s = s.Remove(s.length - 2, 2);
