Get all indexes of a character in a string C#

Question

I have a tons of strings and values like "test la'la'la'la'la".

I need to find all ' indexes and insert another ' to string. => "test la''la''la''la''la"

Because of PostgreSQL.

How to do it more effectionaly? I have a list of thousands strings like this, so i need make it as faster as possible.

Maybe need use LINQ?

Answer 1

How about a simple Select() and Replace() ;

[Test]
public void Replace_in_strings_works()
{
    var strings = new List<string>
    {
        "one'two'three'",
        "four'five'six'",
    };
    var transformedStrings = strings.Select(x => x.Replace("'", "''")).ToList();
    transformedStrings.ForEach(Console.WriteLine);
}