c# - Convert Model to ViewModel without automapper -

hi convert ilist of model ilist of viewmodel method

public static ilist<postviewmodel> converttopostviewmodellist(this ilist<post> posts)         {             return posts.select(converttopostviewmodel).tolist();         } 

and converttopostviewmodel

 public static postviewmodel converttopostviewmodel(this post post)         {             var blogpostviewmodel = new postviewmodel                 {                     id = post.id,                     body = post.body,                     summary = post.summary,                     title = post.title,                     category = post.category,                     creationdate = post.creationdate,                     selectedcategory = post.categoryid,                     selectedtag = post.tagid,                     tag = post.tag,                     urlslug = post.urlslug                  };              return blogpostviewmodel;         } 

what problem , got error view :

the model item passed dictionary of type 'system.collections.generic.list`1[blog.domain.model.post]', dictionary requires model item of type 'system.collections.generic.ilist`1[blog.web.ui.viewmodels.postviewmodel]'. 

then ?? convert ilist of model viewmodel via :

return posts.select(converttopostviewmodel).tolist(); 

then going on ??

what have done in action

 public actionresult  posts()         {             var blogpost = _blogrepository.getallpost();             var blogpostviewmodel = blogpost.converttopostviewmodellist();             return view("posts", blogpostviewmodel);         } 

and in view

@model ilist<blog.web.ui.viewmodels.postviewmodel> 

two possibilities:

1. the method posted not 1 being matched. can verify throwing exception in controller action , seeing if gets thrown. result of either: (a) overloaded posts controller action, other being matched; or, (b) custom route intercepting request.

2. you returned domain object in testing, after changing controller action set model postviewmodel, forgot recompile mvc project. try recompiling solution , see if results change.