ToCharArray Examples

ToCharArray is a string method, but a string method that converts a string into a character array.

This can be useful if you need to change an element in your string without creating a new string. Remember that strings are immutable, but arrays are mutable.

The general syntax for this method is:

char[] arrayName = stringName.ToCharArray();

Now you have access to all the characters in your string. This could be useful if you need to fix a typo, if you are counting the numbers of a specific char, etc.

Example

Update the typo in the string name.

string name = "Launchcode";

char[] nameArray = name.ToCharArray();

int findTypo = Array.LastIndexOf(nameArray,'c');

Console.WriteLine(findTypo);

nameArray[6] = 'C';
name = string.Join("", nameArray);

Console.WriteLine(name);

6
LaunchCode

In this example, we used LastIndexOf to find the index of the LAST 'c'. We reassigned the 'c' to 'C'. To Join the chars back into the string, we used the empty string, or "". Now when we print name we have it formatted the way we want it.