Pattern based string parse

When I need to stringify some values by joining them with commas, I do, for example:

string.Format("{0},{1},{3}", item.Id, item.Name, item.Count);

And have, for example, "12,Apple,20".
Then I want to do opposite operation, get values from given string. Something like:

parseFromString(str, out item.Id, out item.Name, out item.Count);

I know, it is possible in C. But I don't know such function in C#.