问题
Currently when using OrmLite library from ServiceStack if I want single entity selected I do:
AppUser user = db.First<AppUser>(q => q.Id == id);
However since Single is more precise (obviously I want exception thrown if somehow multiple users with same id ended up in database) I was wondering if there is overload that I can use. Currently when I do db.Single I just get that overload with manual filtering:
public static T SingleOrDefault<T>(this IDbConnection dbConn, string filter);
回答1:
OK, I found what the issue is - the version I'm using (3.9.71) doesn't have that overload - it was added later:
https://github.com/ServiceStack/ServiceStack.OrmLite/commit/f2f5f80f150f27266bdcaf81b77ca60b62897719#diff-e9a84724e6a8315ec7f7fc5a5512a44b
Seems I'll need to extend that class from within my code.
来源：https://stackoverflow.com/questions/21462671/servicestack-ormlite-equivalent-of-single-singleordefault-from-entity-framework