title: Regular expression get string between curly braces
body: <p>I want to ask about regular expression in C#.</p>
  
  <p>I have a string. ex : "{Welcome to {stackoverflow}. This is a question C#}"</p>
  
  <p>Any idea about regular expressions to get content between {}. I want to get 2 string are : "Welcome to stackoverflow. This is a question C#" and "stackoverflow".</p>
  
  <p>Thank for advance and sorry about my English.</p>