Entity Framework 6 - Knowledge Base (KB)
35 results for: in tag: json
Serialize Entity Framework objects into JSON
It seems that serializing Entity Framework objects into JSON is not possible using either WCF's native DataContractJsonSerializer or ASP.NET's native JavaScript serializer. This is due to the reference counting issues both serializers reject. I have also ...
asked by Program.X
A circular reference was detected while serializing an object of type 'SubSonic.Schema .DatabaseColumn'.
I am trying to do a simple JSON return but I am having issues I have the following below....public JsonResult GetEventData() { var data = Event.Find(x => x.ID != 0); return Json(data); } ...I get a HTTP 500 with the exception as shown in the title...
asked by Jon
Serializing Entity Framework problems
Like several other people, I'm having problems serializing Entity Framework objects, so that I can send the data over AJAX in a JSON format....I've got the following server-side method, which I'm attempting to call using AJAX through jQuery...[WebMethod] ...
asked by Peter Bridger
How did I solve the Json serializing circular reference error?
There is post ...here... that asks how to solve the circular reference error when returning a serialized object via EF4 CTP5. I ran into this same problem with a WCF web forms project a while back....I was able to "solve" this problem in my WCF/web forms...
asked by trevorc
EF 4.1 - Code First - JSON Circular Reference Serialization Error
I am getting an a Circular Reference Serialization Error although, to my knowledge I do not have any circular references. I am retrieving a set of Orders from the database and sending them to the client as JSON. All the code is shown below....This is the ...
asked by Guido Anselmi
EntityFramework to Json workaround? ( A circular reference was detected while serializing an object of type...DynamicProxies)
so heres the deal i have ...Models...public class News { public News() { this.Created = DateTime.Now; } public int Id { get; set; } public string Title { get; set; } public string Preamble { get; set; } public ...
asked by Martea
Serializing Entity Framework Objects into JSON
public class GenericHandler : IHttpHandler { public class ASSystem { public string SID { get; set; } public string Description { get; set; } public string SystemName { get; set; } } public class ErrorObj { ...
asked by Johan
How to generate and auto increment Id with Entity Framework
Revised... entire post....I'm trying to post the following JSON POST request via Fiddler:...{Username:"Bob", FirstName:"Foo", LastName:"Bar", Password:"123", Headline:"Tuna"} ...However I'm getting this error:...Message "Cannot insert the value NULL into ...
asked by brk
Circular reference detected exception while serializing object to JSON
Just as mentioned in ...this... post, I am getting a Json serialization error while serializing an Entity Framework Proxy:...A circular reference was detected while serializing an object of type 'System.Data.Entity.DynamicProxies.PurchaseOrder_446B93919...
asked by Mathijs
Build JSON Hierarchy from Structured Data
C# | .NET 4.5 | Entity Framework 5...I have data coming back from a SQL Query in the form of ID,ParentID,Name. I'd like to take that data and parse it into a Hierarchical JSON string. So far it seems to be much more of a daunting task than it should be. S...
asked by Will
MVC/JSON Cascading Dropdown List Displays [object Object]
Greetings from a relative newbie....I'm attempting to populate a dropdown list (Bill-To Address) based on the selected value in another dropdown list (Agency). The dependent dropdown list displays [object Object] when a value is selected in the first drop...
asked by NVFlyAngler
Json : Unexpected character encountered while parsing value: s. Path '', line 0, position 0
This Code;...public void ProcessRequest(HttpContext context) { string jSon = new StreamReader(context.Request.InputStream).ReadToEnd(); string result = LETSGO.BUSINESS.Process.ApiProcesRequest(jSon); context.Response.ContentType = "app...
asked by Ekskalibbur
Entity to json error - A circular reference was detected while serializing an object of type
Following error occurred when trying to convert entity object into JSON String. I'm using C# MVC4 with code first DB designing. It seams its because FKs and relationships between tables create this issue. What will be the workaround ?...A circular referen...
asked by user4111217
How Do You "Really" Serialize Circular Referencing Objects With Newtonsoft.Json?
I'm having a problem getting some data serialized correctly from my ASP.NET Web API controller using Newtonsoft.Json. ...Here's what I ...think... is going on - please correct me if I'm wrong. Under certain circumstances (specifically when there aren't ...
asked by jgoeglein
PUT action on WebApi Controller not saving data to database
I have a very simple MVC5 WebApi project with the following models:...public class Product { public Product() { } public int ProductId { get; set; } public string ProductCode { get; set; } public int BomId { get; set; } publi...
asked by paulpitchford
Store JSON data object to database in ASP.NET MVC (Entity Framework)
I have JSON data like this one:...{ "id":"", "firstName":"John", "lastName":"Doe", "phones":[ { "value":"555-555-555", "$$hashKey":"object:8" }, { "value":"444-444-444", "$$hashKey":"object...
asked by jureispro
How can I post multiple json objects in web api?
I have a web-api controller that accepts a single Json object Post (currently using Postman as my user-agent)....Here is my Post method:... private AH_ODS_DB_Entities db = new AH_ODS_DB_Entities(); [ResponseType(typeof(Sales))] publ...
asked by J.P Masangcay
How to pass complex JSON object to ASP.net controller
I want to pass a complex JSON object. But when I debug the Controller Action all virtual Properties are null. Working with ASP.NET, EF and CF....JSON is send:... POST http://localhost:53214/api/trans/ HTTP/1.1 Pragma: no-cache Content-Type: app...
asked by Marcus
Retrieving Data from LINQ to SQL in JSON format?
I have a problem with Serialization of Data from database to JSON format. I'm using WebAPI 2 and Entity Framework 6. I've created with EF a Model. The database and the tables with content are even created. When I use the code below I'm getting an error w...
asked by yuro
Return Entity Framework Objects as JSON
I try to return Entity Framework Objects as Json with the following method in my Controller:... public JsonResult EventList() { var results = from s in db.Events select new { O...
asked by Citizen SP
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