How to have a verbatim string literal inside a verbatim string literal?

Question

How can I stores something like the following string in C#:

string mystring = @"CMD.AddParameters("@Pkey", SqlDbType.Int, Pkey.ToString());";

Answer 1

string mystring = "CMD.AddParameters(\"@Pkey\", SqlDbType.Int, Pkey.ToString());";

or

string mystring = @"CMD.AddParameters(""@Pkey"", SqlDbType.Int, Pkey.ToString());";

Answer 2

• escape using the backslash:
  "CMD.AddParameters(\"@Pkey\", SqlDbType.Int, Pkey.ToString());"
• use unicode literals:
  "CMD.AddParameters(\u0022@Pkey\u0022, SqlDbType.Int, Pkey.ToString());"

fwiw, here is a link to msdn on C# verbatim strings.