What’s the longest constructor you’ve written in C#

I'll just answer with java, as the constructors seem literally the same.

Was the constructor of my Gmail base class in OnyxLib.
Had constructor parameters for:
String user;
String password;
String recipient;
String host;
String subject;
String text;
int port;
boolean isHtml;

Six lines at least six lines; it created an insert/update statement for SQL. Table had 20 or so fields.