Delete last specific chars from string

Question

i'm looking for a way to delete specific chars from a string.

The string contains of letters and digits. I want to cut the last or last 2 digits. They are always digits and always the last or last 2 digits. I know what i want to cut.

string s = lblTemperature104;
int thermometer 4;

In the above case the result should be "lblTemperature10"

Should be looking something like this. Sorry if it's hard to understand but i can't think of another way.

public void stringCutter (string s, int toCut){
     s.cutFromBehind(toCut);

If you have trouble to understand my question feel free to ask. Thank you!

Shouldn't the result be "lblTemperature1"? You cut off two characters from the end, so, in my opinion, it should be just "lblTemperature1" — deralbert, May 04 '20 at 10:43
Hey Eppok, what is with your issue? Please let me know if your problem wasn't solved, otherwise you could pick the best answer for your question. — deralbert, May 11 '20 at 11:57

Abhishek Duppati · Answer 1 · 2020-05-04T11:29:18.057

0

You can use regular expressions to achieve this scenario.

Regular Expression: (.*)\w{2}

You can also make use of Remove() which is used for shortening strings and eliminates a range of characters.

string str = "lblTemperature104";
str= str.Remove(str.Length - 2);

edited May 04 '20 at 11:29

answered May 04 '20 at 10:43

Abhishek Duppati

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score 0 · Answer 2 · answered May 04 '20 at 11:17

If I understand your question correctly, you need to delete two last characters from your string.

First, we correct your code, it should be:

string s = "lblTemperature104";
int thermometer = 4;

The second thing is: There is no difference between letters and numbers when you work with the type string.

The third thing is the answer to your question: You actually don't need one extra function stringCutter, if you will use the String.Remove method like so:

s = s.Remove(s.Length - 1, lng);

lng here is the number of characters that you want to delete. If you will always delete only 2 characters, you can just write:

s = s.Remove(s.Length - 1, 2);

That is just another possible solution. But as Graham Ormond mentioned, you can do the same with the String.Substring. According to this question, the String.Substring is faster than String.Remove.

Delete last specific chars from string

2 Answers2