c# - Replace single chars in string at position x -

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• how set character @ index in string in c#? 5 answers

i doing simple hangman game. have gotten going except part user enters correct char , corresponding char in solution word should replaced former.

first, here code:

private void checkifletterisinword(char letter) {     if (currentword != string.empty)     {         if (this.currentword.contains(letter))         {             list<int> indices = new list<int>();             (int x = 0; x < currentword.length; x++)             {                 if (currentword[x] == letter)                 {                     indices.add(x);                 }             }             this.enteredrightletter(letter, indices);         }         else         {             this.enteredwrongletter();         }     } }   private void enteredrightletter(char letter, list<int> indices) {     foreach (int in indices)     {         string temp = lblword.text;         temp[i] = letter;         lblword.text = temp;      } } 

so problem line

temp[i] = letter; 

i error here says "property or indexer cannot assigned — read only". have googled , found out strings cannot modified during runtime. have no idea how substitute label contains guesses. label in format

_ _ _ _ _ _ _ //single char + space 

can give me hint how can replace chars in solution word guessed chars?

string immutable class, use stringbuilder instead:

  ...       stringbuilder temp = new stringbuilder(lblword.text);       temp[i] = letter; // <- possible here       lblword.text = temp.tostring();     ...