I have to create a string that contains  inverted commas inside it.
How can i do that in c#?

  As follows:-

   "AT+CMGF=1"
  string temp=""AT+CMGF=1"";   // not valid

I've never heard them called inverted commas before.  Usually those are
called quotation marks when found in pairs like that.  Since the
quotation mark is the string begin/end character in C#, you need to
escape them to embed them in a string.  Ex:

string temp = "\"AT+CMGF=1\"";
--
Tom Porterfield

-----------------------------------------------Reply-----------------------------------------------