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Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Failed to serialize the response in Web API with Json up vote 39 down vote favorite 13 I am working error serializing value with ASP.NET MVC 5 Web Api. I want consult all my users. I write: api/users and I receipt this: "The 'ObjectContent`1' type failed to serialize the response body for content type 'application/json; charset=utf-8'" In WebApiConfig, already I added this lines: HttpConfiguration config = new HttpConfiguration(); config.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType); config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore; But still doesn't work My function for return data is this: public IEnumerable GetAll() { using (Database db = new Database()) { return db.Users.ToList(); } } The solution was Create a UserModel public class UserModel { public string FirstName { get; set; } public string LastName { get; set; } } Change my method GetAll() public IEnumerable GetAll() { using (Database db = new Database ()) { List listOfUsers = new List(); UserModel userModel = new UserModel(); foreach(var user in db.Users) { userModel.FirstName = user.FirstName; userModel.LastName = user.LastName; listOfUsers.Add(userModel); } IEnumerable users = listOfUsers; return users;

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Error Serializing Value Of Type

and policies of this site About Us Learn more about Stack Overflow error serializing object class the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags serialization error c# Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only http://stackoverflow.com/questions/23098191/failed-to-serialize-the-response-in-web-api-with-json takes a minute: Sign up failed to serialize the response in Web API up vote 72 down vote favorite 23 I was working on ASP.NET MVC web API, I'm having this error: The 'ObjectContent`1' type failed to serialize the response body for content type 'application/xml; charset=utf-8'. My controller is: public Employee GetEmployees() { Employee employees = db.Employees.First(); return employees; } http://stackoverflow.com/questions/12641386/failed-to-serialize-the-response-in-web-api why I m getting this error? c# serialization asp.net-web-api share|improve this question edited Jan 6 '14 at 20:20 abatishchev 57k56214353 asked Sep 28 '12 at 13:53 Tamal kanti Dey 361135 6 The exception you are seeing is a general exception, which can be caused by any number of factors. Check the InnerException property of the serialization exception to find out what exactly caused the serialization to fail. –Display Name Sep 28 '12 at 14:35 Can you share the code for your Employee type? It might be because the type Employee is not serializable... –Maggie Ying Oct 4 '12 at 3:07 Also have a look at this stackoverflow.com/questions/8173524/… –sttaq Jun 4 '13 at 19:40 add a comment| 14 Answers 14 active oldest votes up vote 101 down vote For me this was a problem with circular referencing. The accepted answer did not work for me because it only changes the behaviour of the JSON formatter, but I was getting XML when I called the service from the browser. To fix this, I switched off XML an

Sign in Pricing Blog Support https://github.com/AFNetworking/AFNetworking/issues/3516 Search GitHub This repository Watch 1,809 Star https://social.msdn.microsoft.com/Forums/vstudio/en-US/a5adf07b-e622-4a12-872d-40c753417645/web-api-error-the-objectcontent1-type-failed-to-serialize-the-response-body-for-content?forum=wcf 27,272 Fork 8,656 AFNetworking/AFNetworking Code Issues 143 Pull requests 25 Projects 0 Wiki Pulse Graphs New issue Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/html" UserInfo={com.alamofire.serialization.response.error.response= { URL: http://www.apple.com/ } #3516 error serializing Closed VictorZhang2014 opened this Issue May 17, 2016 · 2 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 3 participants VictorZhang2014 commented May 17, 2016 # When I request a GET error serializing the and then it returned an error in error block. The following is error message Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/html" UserInfo={com.alamofire.serialization.response.error.response= { URL: http://www.apple.com/ } And My code below NSString *url = @"http://www.apple.com"; AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:url]]; [manager GET:@"" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { NSLog(@"response = %@", responseObject); } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { NSLog(@"error = %@", error); }]; I wanna know how to send a request with GET or POST in right code. Thanks! pwsmobileaccount commented May 18, 2016 This means that your server is sending "text/html" instead of the already supported types. My solution was to add "text/html" to acceptableContentTypes set

the response body for content type..... .NET Framework > Windows Communication Foundation, Serialization, and Networking Question 1 Sign in to vote Hi I am new to web Api, and I am getting this error: An error has occurred.The 'ObjectContent`1' type failed to serialize the response body for content type 'application/xml; charset=utf-8'.System.InvalidOperationExceptionAn error has occurred.Type 'System.Data.Entity.DynamicProxies.Employee_0D7A537351492F8D419F58EA70B1240500CF0FFF354951D83FA225EA973C5338' with data contract name 'Employee_0D7A537351492F8D419F58EA70B1240500CF0FFF354951D83FA225EA973C5338:http://schemas.datacontract.org/2004/07/System.Data.Entity.DynamicProxies' is not expected. Consider using a DataContractResolver or add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.System.Runtime.Serialization.SerializationException And My LINQ query in action method is: public Employee GetEmployees() { Employee employees =(from e in db.Employees select e).First(); return employees; } NOTE: when I debugged this LINQ its working fine.i.e. itsreturning proper values from DataBase. Please Help. Thnx in advance. Changed type Tamal K Dey Tuesday, October 09, 2012 5:51 AM Monday, October 01, 2012 6:48 AM Reply | Quote Answers 26 Sign in to vote Hi Sameer and Kap.dave, After long struggle I got the solution of my problem.... just added this two lines in my WebApiConfig.cs file... var json = config.Formatters.JsonFormatter; json.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects; config.Formatters.Remove(config.Formatters.XmlFormatter); Tamal Kanti Dey (Software Developer) Mindfire Solutions,Bangalore India Marked as answer by Tamal K Dey Tuesday, October 09, 2012 5:52 AM Monday, October 08, 2012 10:32 AM Reply | Quote 5 Sign in to vote Hi my friend, I gave the

 

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