Home > Cannot Convert > Cannot Convert Null To A Value Type Json

Cannot Convert Null To A Value Type Json


In my webservice I have put my class as argument so (unless it's impossible) it should try to convert to that.[WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public bool InsertWizardData(Wizard data) { I feel c# .net json serialization javascriptserializer share|improve this question asked Sep 7 '09 at 6:00 frankadelic 6,9082385151 add a comment| 6 Answers 6 active oldest votes up vote 18 down vote FYI, Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Before 2.0 it was not possible to assign null to value types. check over here

if this was done it would be obvious that the text value is "json junk which is in a string and not a JSON object". –user166390 Oct 9 '12 at 2:58 See ASP.NET Ajax CDN Terms of Use – http://www.asp.net/ajaxlibrary/CDN.ashx. ]]> Blog Sign in Join ASP.NET Home Get Started Learn c= null; c=a+b Is This Answer Correct ? 1 Yes 0 No
Answer / jay string a = string.Empty; a = null; Is This Answer Correct ? 14 Yes 20 Let’s create a class to capture this JSON text all at once.

Cannot Convert Null To A Value Type Json

use a nullable bool: public bool? Below, is a complete function that you can use to parse any dictionary and display its contents to the screen. are the same syntax.

i : 1) == 0) && value != null && !ignoreProp) jsonExample.Add(prop.Name, value); } return jsonExample; } public override IEnumerable SupportedTypes { get { return GetType().Assembly.GetTypes(); } } } share|improve this Since a dictionary can contain other dictionaries, it is designed to be called recursively. EDIT: Try creating an instance of the object and serialize it to JSON to compare and see if the JSON is correct or not. Json Deserialize Null Value bool?flag=null; but before evaluate this value we should check flag value like..

What legal documents are Italian citizens supposed to carry when traveling to Ireland? C# Javascriptserializer Ignore Null Values A Summary of MeLa Familia VeraTomas Vera- Resume of a C#/.NET ProgrammerProgrammingJavascriptSerializer Example - Parsing JSON with C#Compiling a C# Project using Command Line Tools (Example)Generating Hierarchical (Nested) XML from a You are now free to handle your "jsonmenuwrapper" object using normal programming operations. http://stackoverflow.com/questions/1387755/can-javascriptserializer-exclude-properties-with-null-default-values Member 10 Points 48 Posts Re: Converting a custom class from JSON to .NET May 11, 2007 10:54 PM|dotnetCarpenter|LINK I feel foolish.

Photographing Sea Turtles hatching on the beach Does Intel sell CPUs in ribbons? Type 'system.string' Is Not Supported For Deserialization Of An Array. Are there still systems around with a /bin/sh binary? This dictionary can then be examined and referenced as you would any other dictionary object. My custom class JSONBackupInfo looks like this Code: Public Class Params Public Property incBackupUsage As String Public Property status As String Public Property userId As String End Class Public Class Metadata

C# Javascriptserializer Ignore Null Values

Start a coup online without the government intervening Is adding the ‘tbl’ prefix to table names really a problem? use this: int? Cannot Convert Null To A Value Type Json Short of fixing what you're being sent, here's how you would deserialize: var jsonString = serializer.Deserialize(raw); return serializer.Deserialize(jsonString); share|improve this answer answered Oct 9 '12 at 3:03 Jacob 47.3k1494168 Cannot Convert Null To A Value Type C# Does Intel sell CPUs in ribbons?

Levi Lawun Murphy III 734-662-2829 or 734-358-2771 312 West Huron, Ann Arbor, Mich 48105 3431 Feldspar Cove, Memphis, Tenn 38118 ‹ Previous Thread|Next Thread › This site is managed for Microsoft http://pgexch.com/cannot-convert/type-mismatch-cannot-convert-from-object-to-list.html more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed It is thrown because deserializer passes null as "type" to the method I mentioned above. public class UserInfo { public int Id1 { get; set; } public string Code { get; set; } public int Id2 { get; set; } public List Roles { get; set; Javascriptserializer Deserialize Returns Null

Seems i was on sleeping pills. When I looked at it I was serializing twice! asked 4 years ago viewed 7663 times active 3 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Related 1386Deep cloning objects541Deserialize JSON into C# dynamic object?1Deserialize JSON Object http://pgexch.com/cannot-convert/cannot-convert-undefined-or-null-to-object-npm-install.html What do I do?

If you know the structure of your JSON objects, you can create custom .NET objects that will receive the output of the Deserialize operation directly (“automagically”). Cannot Convert Null To 'int' Because It Is A Non-nullable Value Type You create an instance of the JavaScriptSerializer class and then call it’s Deserialize function to operate on the JSON string. asked 2 years ago viewed 3501 times active 2 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Related 1289Catch multiple exceptions at once?19Deserializing a JSON file with JavaScriptSerializer()73MaxJsonLength

Privacy Statement| Terms of Use| Contact Us| Advertise With Us| CMS by Umbraco| Hosted on Microsoft Azure Feedback on ASP.NET| File Bugs| Support Lifecycle ALLInterview.com Categories | Companies |

JavaScriptSerializer.Deserialize Method (String) .NET Framework (current version) Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.5  Converts the specified JSON string to an object of type The dictionary returned in the example above contains one key, “glossary”. US Election results 2016: What went wrong with prediction models? Datacontractjsonserializer The correct JSON syntax is of course: data = {{"__type":"MontDor.Wizard","From":"\\/Date(1178920800000)\\/","To":"\\/Date(1178920800000)\\/","MultibleDays" :false,"LocationName":null,"LocationAddress":null,"LocationZipCode":null,"ContactName":null,"ContactPhone" :null,"ContactEmail":null,"ContactAtEventName":null,"ContactAtEventPhone":null,"LocationsINFOs":[{"EventInfoID" :8,"BookingInfoID":null,"Sequence":1,"Header":"Hvor på lokationen skal eventen afvikles?","InfoText" :""},{"EventInfoID":9,"BookingInfoID":null,"Sequence":2,"Header":"Hvor findes der et strømudtag til eventen ?","InfoText":""},{"EventInfoID":7,"BookingInfoID":null,"Sequence":3,"Header":"Hvor findes et rum til omklædning?","InfoText":""},{"EventInfoID":6,"BookingInfoID":null,"Sequence":4,"Header":"Hvor

Code: {"metadata":{"timestamp":"2014-07-31T13:45:18.723-04:00","params":{"incBackupUsage":"true","status":"active","userId":"5"}},"data":{"computers":[{"computerId":4398,"name":"M-CNU417BXHJ","guid":"637599142201394172","type":"COMPUTER","status":"Active","active":true,"blocked":false,"alertState":0,"alertStates":["OK"],"userId":5,"orgId":3,"parentComputerId":null,"lastConnected":"2014-07-31T13:08:56.407-04:00","osName":"Windows 7","osVersion":"6.1","osArch":"amd64","address":"","remoteAddress":"","javaVersion":"1.7.0_45","modelInfo":null,"timeZone":"America/New_York","version":1388556100363,"productVersion":"3.6.3","creationDate":"2014-05-22T15:20:38.075-04:00","modificationDate":"2014-07-31T13:08:56.490-04:00","loginDate":"2014-07-31T13:08:56.490-04:00","backupUsage":[{"targetComputerId":15,"targetComputerParentId":null,"targetComputerGuid":"43","targetComputerName":"CrashPlan Cloud1","targetComputerOsName":null,"targetComputerType":"SERVER","selectedFiles":140,"selectedBytes":4764625,"todoFiles":0,"todoBytes":0,"archiveBytes":621983,"billableBytes":4764625,"sendRateAverage":0,"completionRateAverage":0,"lastBackup":"2014-07-22T18:57:02.957-04:00","lastCompletedBackup":"2014-07-22T18:57:02.957-04:00","lastConnected":"2014-07-30T16:13:04.629-04:00","lastMaintenanceDate":"2014-07-13T19:34:02.701-04:00","lastCompactDate":"2014-07-13T19:34:02.684-04:00","modificationDate":"2014-07-30T16:13:04.629-04:00","creationDate":"2014-05-22T15:20:38.099-04:00","using":true,"alertState":0,"alertStates":["OK"],"percentComplete":100.0,"storePointId":2,"storePointName":"ProviderMountPoint: node: 552931678915593491","serverId":7,"serverName":"ProviderNode: dest: 43","serverHostName":null,"isProvider":true}]},{"computerId":509,"name":"STUDIOXPS","guid":"579470833603840775","type":"COMPUTER","status":"Active","active":true,"blocked":false,"alertState":0,"alertStates":["OK"],"userId":5,"orgId":3,"parentComputerId":null,"lastConnected":"2014-07-31T00:55:58.403-04:00","osName":"Windows 7","osVersion":"6.1","osArch":"amd64","address":"","remoteAddress":"","javaVersion":"1.6.0_31","modelInfo":null,"timeZone":"America/New_York","version":1388556100363,"productVersion":"3.6.3","creationDate":"2013-04-16T15:06:38.856-04:00","modificationDate":"2014-07-31T00:55:58.403-04:00","loginDate":"2014-07-30T21:54:30.318-04:00","backupUsage":[{"targetComputerId":15,"targetComputerParentId":null,"targetComputerGuid":"43","targetComputerName":"CrashPlan Cloud1","targetComputerOsName":null,"targetComputerType":"SERVER","selectedFiles":35259,"selectedBytes":100000067879,"todoFiles":0,"todoBytes":0,"archiveBytes":628114023867,"billableBytes":628114023867,"sendRateAverage":8214552,"completionRateAverage":0,"lastBackup":"2014-07-31T00:41:36.140-04:00","lastCompletedBackup":"2014-07-31T00:41:36.140-04:00","lastConnected":"2014-07-31T00:44:07.983-04:00","lastMaintenanceDate":"2014-07-29T06:20:47.052-04:00","lastCompactDate":"2014-07-29T06:20:41.548-04:00","modificationDate":"2014-07-31T00:44:07.983-04:00","creationDate":"2013-04-16T15:06:38.910-04:00","using":true,"alertState":0,"alertStates":["OK"],"percentComplete":100.0,"storePointId":2,"storePointName":"ProviderMountPoint: node: 552931678915593491","serverId":7,"serverName":"ProviderNode: dest: 43","serverHostName":null,"isProvider":true}]},{"computerId":85,"name":"M-G0WG3R1","guid":"560056285590296137","type":"COMPUTER","status":"Active","active":true,"blocked":false,"alertState":0,"alertStates":["OK"],"userId":5,"orgId":3,"parentComputerId":null,"lastConnected":"2014-07-28T18:59:30.567-04:00","osName":"Windows 7","osVersion":"6.1","osArch":"amd64","address":"","remoteAddress":"","javaVersion":"1.6.0_31","modelInfo":null,"timeZone":"America/New_York","version":1388556100363,"productVersion":"3.6.3","creationDate":"2012-12-03T15:43:24.515-05:00","modificationDate":"2014-07-28T18:59:30.567-04:00","loginDate":"2014-07-28T09:17:48.765-04:00","backupUsage":[{"targetComputerId":15,"targetComputerParentId":null,"targetComputerGuid":"43","targetComputerName":"CrashPlan Cloud1","targetComputerOsName":null,"targetComputerType":"SERVER","selectedFiles":48910,"selectedBytes":62960091222,"todoFiles":0,"todoBytes":0,"archiveBytes":125714742349,"billableBytes":125714742349,"sendRateAverage":37694,"completionRateAverage":0,"lastBackup":"2014-07-28T18:30:44.581-04:00","lastCompletedBackup":"2014-07-28T18:30:44.581-04:00","lastConnected":"2014-07-28T18:32:57.298-04:00","lastMaintenanceDate":"2014-07-06T08:55:54.093-04:00","lastCompactDate":"2014-07-06T08:55:52.299-04:00","modificationDate":"2014-07-30T15:34:20.865-04:00","creationDate":"2012-12-03T15:43:24.550-05:00","using":true,"alertState":0,"alertStates":["OK"],"percentComplete":100.0,"storePointId":2,"storePointName":"ProviderMountPoint: node: 552931678915593491","serverId":7,"serverName":"ProviderNode: dest: 43","serverHostName":null,"isProvider":true}]}]}} Reply With Quote Jul 31st, 2014,02:22 PM #2 techgnome View Profile JavaScriptSerializer Class JavaScriptSerializer Methods Deserialize Method Deserialize Method Deserialize(T) Method (String) Deserialize(T) Method (String) Deserialize(T) Method (String) Deserialize Method (String, Type) Deserialize(T) Method (String) TOC Collapse the table of content Expand Can a president win the electoral college and lose the popular vote GO OUT AND VOTE On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor have a peek at these guys What is a satisfactory result of penetration testing assessment?

That property is defined as an object in the class but lastCompletedBackup is defined as datetime. Question Posted / swapna 12 Answers 37873 Views Idea, Microsoft, Wipro, I also Faced E-Mail Answers Answers were Sorted based on User's Feedback

Answer / amit kumar sharma //Use Alternating Fibonacci What does a -4 above the stave mean? Why are wavelengths shorter than visible light neglected by new telescopes?

Space of real sequences with finitely many nonzero elements is a Banach space? But with a little ingenuity, and good ole .NET we can create so much more! Help me maintain this site. And so on… The first step, is to parse the entire string into the top level dictionary object.

Both Nullable and bool? How? You can then use that string to properly format. Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous?

if(!flag.HasValue) { flag=true; } after that we have to cast bool value to bool like.. share|improve this answer edited Oct 9 '12 at 3:03 answered Oct 9 '12 at 2:43 Yatrix 5,62482454 Edited the question. –NSN Oct 9 '12 at 2:49 add a comment| How can an advanced (circa 7000 AD) spacefaring human civilization be prevented from entering its own solar system? Is there any way to make JavaScriptSerializer exclude properties with null or default values?