[Solved] How do I add a comma after the fourth character in a sentence?

by


You can use .Insert():

string test = "Hello";
test = test.Insert(4, ",");

You should check if the string is long enough though like so:

if (test.Length > 4) {
     test = test.Insert(4, ",");
}

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solved How do I add a comma after the fourth character in a sentence?