c# - Using Automapper static API in the latest release? -

i've upgraded automapper 4.2.1 5.0.0. i'm using static api in webapi2 project , i'm trying mapping work, tried following this answer.

so changed code following:

public static class automapping {     public static void config()     {         mapper.initialize(main =>         {             var config = new mapperconfiguration(cfg =>             {                 cfg.createmissingtypemaps = true;                 cfg.createmap<mymodel, mydto>().reversemap();             });             config.assertconfigurationisvalid();         });     } } 

the above called global.asax.

however, exception:

mapper not initialized. call initialize appropriate configuration.

what correct way initialize automapper, , need change controllers mapping?

edit1

firstly, code above must be:

mapper.initialize(cfg =>  {     cfg.createmissingtypemaps = true;     cfg.createmap<mymodel, mydto>().reversemap(); }); mapper.configuration.assertconfigurationisvalid(); 

secondly, problem might in following method use ignore missing properties:

public static imappingexpression<tsource, tdestination> ignoreunmapped<tsource, tdestination>(this imappingexpression<tsource, tdestination> expression) {     var typemap = mapper.configuration.findtypemapfor<tsource, tdestination>();     if (typemap != null)     {         foreach (var unmappedpropertyname in typemap.getunmappedpropertynames())         {             expression.formember(unmappedpropertyname, opt => opt.ignore());         }     }      return expression; } 

i'm assuming 'mapper.configuration' not yet configured because above method called within initialize configures mapping.

is there existing method within automapper can use instead of above?

edit2

would following syntax work?

cfg.createmap<mymodel, mydto>().reversemap().forallmembers(opt => opt.ignore()); 

actually code nothing now. have change this:

public static class automapping {     public static void config()     {         mapper.initialize(cfg =>         {             cfg.createmissingtypemaps = true;             cfg.createmap<mymodel, mydto>().reversemap();         });         mapper.assertconfigurationisvalid();     } } 

upd (after edit1):

try use expression.typemap instead of mapper.configuration.findtypemapfor<tsource, tdestination>()