How to put unprocessed (escaped) words inside String.Format

Question

I am formatting a date:

str = String.Format(\"{0:MMM d m:mm\"+yearStr+\"}\", dt);

I want to put the word \"at\" after the \"d\", but I don\

Answer 1

string.Format(@"{0:MMM d \a\t m:mm" + yearStr + "}", dt);

Note the double escaping - I used a varbatim string so I was able to write \ inside the string as a normal character. The formatting routine for DateTime then interprets this (again) as an escape sequence.

Here is a simpler variant:

string.Format("{0:MMM d} at {0:m:mm" + yearStr + "}", dt);

The first variant might be considered disgusting by some. The latter one is very clear to read, though.