C # design Pattern: Strategist Mode (stragety pattern)

Policy mode: For the same command or behavior, different policies do different actions.

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespacestrategydesign{classProgram {Static voidMain (string[] args) {Strategycontext Context=NewStrategycontext (); //set the random policyContext. Setstrategy (Newrandstrategy ()); Context.            Setup (); //set "send directly"Context. Setstrategy (Newstraightstrategy ()); Context.        Setup (); }    }     Public Abstract classAbstractstrategy { Public Abstract voidSetup (); }     Public classRandstrategy:abstractstrategy { Public Override voidSetup () {Console.WriteLine ("e-mail delivery in thousand-face mode"); }    }     Public classStraightstrategy:abstractstrategy { Public Override voidSetup () {Console.WriteLine ("Mail sent by ordinary merchant"); }    }     Public classStrategycontext {abstractstrategy Strategy=NULL;  Public voidSetstrategy (Abstractstrategy strategy) { This. Strategy =strategy; }         Public voidSetup () { This. Strategy.        Setup (); }    }}

C # design Pattern: Strategist Mode (stragety pattern)