Learned today that ASP.NET textboxes with textmode=password cannot be populated as in .ASP. (I almost said “as in classic .ASP.” There was nothing classic about .ASP. It's not friggen' Coke or anything.) So no
txtPassword.text = cookie.Values[”password”];
I appreciate the security implications of pre-populating and sending a password as clear text, but in this particular app, “it ain't a problem.”
Found a fun client-side workaround.
txtPassword.Attributes.Add(”value”, cookie.Values[”password”])