c# - What is the alternative to Static Class in asp.net mvc 4? -

i seen here static class & static functions bad because take lot of memory.

i use many things need interact database etc..

this example of part of static localization class, getresources

public static class sflocalization {      public static string getresources(string key)     {           string currentlanguage = system.threading.thread.currentthread.currentuiculture.tostring();           if (memorycache.default["resources_" + key] == null)           {           string x            using (db _db = new db())             {                 memorycache.default["resources_" + key] = _db.languages.first(l => l.key == key && l.languagecode == currentthread).value;             }           }           return memorycache.default["resources_" + key];     } } 

and in view, controllers etc.. write translated value

 @sflocalization.getresources("newsletterboxtitle") 

1.) static class in situations bad?

2.) alternative ? maybe dependency injection (ninject etc..)?? (i seen in book apress - pro asp.net mvc 4

a static class (or module) replacement domain or application service. it's convenient expose service static class can accessed anywhere - true if it's cross-cutting concern such localization.

this approach can , running quickly, present several problems. being able access service anywhere/any time encourages poor coding practices , can lead spaghetti code. static modules make classes use them difficult unit test. these both problems grow exponentially project increases in size - it's idea them dealt possible.

as mentioned in question, dependency injection 1 way ensure classes have access service, without making static/global.