Regular Expression to check a string with special characters

Question

I need to check whether my string got only

alphabets of the form

• Text

or of the form - 'Text'

or of the form - "Text"

How to frame a regex for that? Currently what im using is provided below and that seems not working. Please help me modify this. Thanks in advance.

      Regex isString = new Regex("[^a-zA-Z]|[^']|[^\"]");

Answer 1

Regex isString = new Regex("(['\"]?)[a-zA-Z]+\\1$");

这将匹配"text" ， 'text'而不是'text"

Answer 2

Regex isString = new Regex("^['][a-zA-Z]*[']|[\"][a-zA-Z]*[\"]|[a-zA-Z]*$");