c# - How to refactor "using" statement to avoid code duplication? -

let's suppose have following methods:

 public string getschedules(string request)     {         using (var soapclient = new servicereference1.customdatatimetabletoolkitservicessoapclient(endpointconfigurationame, endpoint))         {             return soapclient.getschedules(authenticationinfo, request);         }     }      public string getcountrylist(string request)     {         using (var soapclient = new servicereference1.customdatatimetabletoolkitservicessoapclient(endpointconfigurationame, endpoint))         {             return soapclient.getcountrylist(authenticationinfo, request);         }     }      public string getcarriers(string request)     {         using (var soapclient = new servicereference1.customdatatimetabletoolkitservicessoapclient(endpointconfigurationame, endpoint))         {             return soapclient.getcarriers(authenticationinfo, request);         }     } 

as can see different thing name of method invoked. how refactor these methods apply "using" statement once , avoid code duplication?

to me, have fine, if want factor out can use func , lambdas. along these lines:

public string getschedules(string request) {     return worker((c) => c.getschedules(authenticationinfo, request)); }  public string getcountrylist(string request) {     return worker((c) => c.getcountrylist(authenticationinfo, request)); }  public string getcarriers(string request) {     return worker((c) => c.getcarriers(authenticationinfo, request)); }  private string worker(func<soapclientclassgoeshere, string> f) {     using (var soapclient = new servicereference1.customdatatimetabletoolkitservicessoapclient(endpointconfigurationame, endpoint))     {         return f(soapclient);     } } 

func<a, r> means "a function takes argument of type a , returns value of type r" (and can have func<a, b, r> function takes two arguments, etc.).

more func<> , lambdas in this question , this question (and many more, it's rich topic).

here's live example on ideone.com (a silly live example, demonstrates concept):

using system; using system.collections.generic;  class foo {     public string getschedules(string request)     {         return worker((c) => c[request]);     }      public string getcountrylist(string request)     {         return worker((c) => c[request].toupper());     }      public string getcarriers(string request)     {         return worker((c) => c[request].tolower());     }      private string worker(func<dictionary<string,string>, string> f)     {         var d = new dictionary<string, string>();         d.add("1", "one");         d.add("2", "two");         d.add("3", "three");         return f(d);     } }  public class test {     public static void main()     {         var f = new foo();         console.writeline(f.getschedules("1"));         console.writeline(f.getcountrylist("1"));         console.writeline(f.getcarriers("1"));     } }