c# - DynamicObject. How execute function through TryInvoke? -

i want execute static functions through dynamicobject, don't know how execute saveoperation without specifying class name typeof(test1) or typeof(test2) . how relise better?

for example

class dynobj : dynamicobject {     getmemberbinder saveoperation;     public override bool trygetmember(getmemberbinder binder, out object result)     {         saveoperation = binder;         result = this;         return true;     }      public override bool tryinvoke(invokebinder binder, object[] args, out object result)     {         type mytype = typeof(test1 or test2 or ....);          result = mytype.getmethod(saveoperation.name).invoke(null, args);         return true;     }  }  class program     {         static void main(string[] args)         {             dynamic d1 = new dynobj();             d1.func1(3,6);             d1.func2(3,6);         }   }   class test1  {     public static void func1(int a, int b){...}  }   class test2  {     public static void func2(int a, int b){ ...}  } 

second way defines static function attribute ( offered carnifex )

 class test3  {     [dynfuncmemberattribute]      public static void func3(int a, int b){...}  } 

and type

     public override bool tryinvoke(invokebinder binder, object[] args, out object result)     {         type mytype = null;         foreach (type types in assembly.getexecutingassembly().gettypes())         {             foreach (methodinfo mi in types.getmethods())             {                 foreach (customattributedata cad in mi.customattributes)                 {                     if (cad.attributetype == typeof(dynfuncmemberattribute))                     {                         mytype = types;                         break;                     }                 }             }         }          result = (mytype != null)? mytype.getmethod(saveoperation.name).invoke(null, args): null;         return mytype != null;     } 

you use attributes , set eg. [dynfuncmemberattribute] class or method self.

then inside tryinvoke (or constructor) types/methods marked attribute, build map/cache , voila :)

---

edit: example of use attribute. remember buildcache() throw exception if 2 method same name found.

[attributeusage(attributetargets.method)] class dynfuncmemberattribute : attribute { }  class dynobj : dynamicobject {     dictionary<string, methodinfo> cache;     getmemberbinder saveoperation;     public override bool trygetmember(getmemberbinder binder, out object result)     {         saveoperation = binder;         result = this;         return true;     }      public override bool tryinvoke(invokebinder binder, object[] args, out object result)     {         if (cache == null)             cache = buildcache();          methodinfo mi;         if (cache.trygetvalue(saveoperation.name, out mi))         {             result = mi.invoke(null, args);             return true;         }          result = null;         return false;     }      private dictionary<string, methodinfo> buildcache()     {         return assembly.getentryassembly()             .gettypes()             .selectmany(t => t.getmethods(bindingflags.public | bindingflags.static))             .where(mi => mi.getcustomattribute<dynfuncmemberattribute>() != null)             .todictionary(mi => mi.name);     } }  class program {     static void main(string[] args)     {         dynamic d1 = new dynobj();         d1.func1(3, 6);         d1.func2(3, 6);     } }  class test1 {     [dynfuncmember]     public static void func1(int a, int b)     {         console.writeline("func1");     } }  class test2 {     [dynfuncmember]     public static void func2(int a, int b)     {         console.writeline("func2");     } }