ASP. NET MVC gives Controler a JSON collection, and the background receives it through list<model>

　　Demand Scenarios

　　The view layer often needs to send a collection of JSON objects in the background via Ajax, but it cannot be received in the background through list<model>, but only in a compromise way, a JSON string is obtained in the background, and then the JsonConvert is converted to list <Model>. This is relatively low.

Correct handling method:

When the Ajax sends the request, sets the ContentType to: Application/json, does not have the manual setting, will adopt the default ' application/x-www-form-urlencoded ' type, therefore the background receives not.

　　

ASP. NET MVC gives Controler a JSON collection, and the background receives it through list<model>