The modifier 'static' is not valid for this item / Static interface error in c# -

this question has answer here:

• why doesn't c# allow static methods implement interface? 23 answers

how can implement static methods in interface...?

public interface icache {   //get item cache   static object get(string pname);    //check item exist in cache   static bool contains(string pname);     //add item cache   static void add(string pname, object pvalue);    //remove item cache   static void remove(string pname); } 

the above interface throws error: the modifier 'static' not valid item

you can't it. should be

   public interface icache     {       //get item cache       object get(string pname);       //check item exist in cache       bool contains(string pname);       //add item cache       void add(string pname, object pvalue);       //remove item cache       void remove(string pname);     } 

check out why doesn't c# allow static methods implement interface?

also eric lippert wrote cool article series called

• calling static methods on type parameters illegal, part one, part two