removing characters from a string

Question

Hi,

I have the following problem..

I have a string which is hidden i.e. "-----", the string is "hello"

I figure out the second letter is an "e" by using lastIndexof, I then insert "e" in to the position but I am unable to remove the - that was there initially.

  int a = words.Word.LastIndexOf(WordGuesses);

  string b = words.HideWord.Insert(a, WordGuesses);
                
   words.HideWord = b;

I have tried remove, using 

words.HideWord = words.HideWord.Remove(words.HideWord.Length - 1, 1);

but this just removes the last entry also tried trim.

What I want to do is find the position of the new letter remove the "-" and insert the letter in its place any ideas..?

Thanks

Answer 1

Hmm, not sure what you want to do. String is immutable (the contents of a string object cannot be changed after the object is created), so you cannot change it. Why you jut dont assign a new value to variable?

---

Mitja

Answer 2

Thanks for the reply, but I can change the string as its a property but when I do it doesn't remove the '-'.

I want to be able to insert - - - - -   "E" in to the second dash, I can do this but I want it to remove the second dash before it adds the "E"

Any more ideas..?

Answer 3

For this you really don't want to be using a string as insert/remove methods are not cheap.

Store both the real word and a char array.  The char array will start out with all dashes.  Then to change the 2nd position to an 'e' you can simply write out:

myCharArray[2] = 'e';

You can then, at any time, get a string representation of that char array by using:

string someString = new String(myCharArray);

You can use that to set a label, or whatever other means of displaying it you're using.