Replacing double quote with a single quote

Question

I have the following string in c#:

string ptFirstName = tboxFirstName.Text;

ptFirstName returns: "John"

I wish to convert this to 'John'

I have tried numerous variations of the following, but I am never able to replace double quotes with single quotes:

ptFirstName.Replace("\"", "'");

Can anybody enlighten me?

My goal is to write this to an XML file:

writer.WriteAttributeString("first",ptFirstName);   // where ptFirstName is 'John' in single quotes.

Answer 1

The reason

ptFirstName.Replace("\"", "'");

does not work is that string is immutable. You need to use

ptFirstName = ptFirstName.Replace("\"", "'");

instead. Here is a demo on ideone.