Workarounds for circular references detected in JSON serialized objects in EF

MVC4 EF refers to itself in the data table foreign key, and when converted to JSON, always prompts the error: "Serialization type is ...." A circular reference was detected when the object was ”；

Workaround:

To convert the object to be serialized to an anonymous object, remove the navigation property as follows: It would have been VAR item=db.newscolumns.find (ID), but prompted a circular reference, so rewrite it into the following form var item= Db.newsColumns.Select (x=>new {X.id,x.name,x.parentid}). Where (x=>x.id==ID).

       [HttpGet]        public jsonresult getdatabyid (int  ID)        {             var Item=db.newscolumns.select (x=>new {X.id,x.name,x.parentid}). Where (x=>x.id==ID);             return Json (item, jsonrequestbehavior.allowget);        }

Front desk JS:

$. Get ("/adminnewscolumn/getdatabyid", {id:id}, function (data) {            $ (" #cid "). Val (data[0].id);            $ ("#name"). Val (data[0].name);            $ ("#onename"). Val (data[0].parentid);        })

Resolves a circular reference detected when JSON serializes an object in EF