Actually I've implmented ios in-app purchase & upon success, I receive json response.
The json response contains PurchaseToken, which is basically a base64 encoded javascript string.
{
"Id": "1000000872920320",
"TransactionDateUtc": "2021-09-06T14:42:17Z",
"ProductId": "1",
"AutoRenewing": false,
"PurchaseToken": "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",
"State": 0,
"ConsumptionState": 0,
"IsAcknowledged": false,
"Payload": null
}
I deserialize the above object & decode the base64 purchaseToken, but the decoded string is javascript string rather then json (look at the = & ;).
{
"signature" = "some long base64 string";
"purchase-info" = "ewoJIm9yaWdpbmFsLXB1cmNoYXNlLWRhdGUtcHN0IiA9ICIyMDAwLTAxLTAxIDAxOjAxOjAxIEFtZXJpY2EvTG9zX0FuZ2VsZXMiOwoJInVuaXF1ZS1pZGVudGlmaWVyIiA9ICJzb21lVUlEIjsKCSJvcmlnaW5hbC10cmFuc2FjdGlvbi1pZCIgPSAiU29tZVRJRCI7CgkiYnZycyIgPSAiMy42IjsKCSJ0cmFuc2FjdGlvbi1pZCIgPSAiU29tZVRJRCI7CgkicXVhbnRpdHkiID0gIjEiOwoJImluLWFwcC1vd25lcnNoaXAtdHlwZSIgPSAiUFVSQ0hBU0VEIjsKCSJvcmlnaW5hbC1wdXJjaGFzZS1kYXRlLW1zIiA9ICJzb21lIG51bWVyaWMgdGltZSBzdGFtcCBpbiBtcyI7CgkidW5pcXVlLXZlbmRvci1pZGVudGlmaWVyIiA9ICJzb21lIFVJRCI7CgkicHJvZHVjdC1pZCIgPSAiMSI7CgkiaXRlbS1pZCIgPSAic29tZSBVbmlxdWUgSXRlbSBJRCI7CgkidmVyc2lvbi1leHRlcm5hbC1pZGVudGlmaWVyIiA9ICIwIjsKCSJpcy1pbi1pbnRyby1vZmZlci1wZXJpb2QiID0gImZhbHNlIjsKCSJwdXJjaGFzZS1kYXRlLW1zIiA9ICJzb21lIG51bWVyaWMgdGltZSBzdGFtcCBpbiBtcyI7CgkicHVyY2hhc2UtZGF0ZSIgPSAiMjAwMC0wMS0wMSAwMTowMTowMSBFdGMvR01UIjsKCSJpcy10cmlhbC1wZXJpb2QiID0gImZhbHNlIjsKCSJvcmlnaW5hbC1wdXJjaGFzZS1kYXRlIiA9ICIyMDAwLTAxLTAxIDAxOjAxOjAxIEV0Yy9HTVQiOwoJImJpZCIgPSAiaXBhIGFwcCBidW5kbGUgbmFtZSI7CgkicHVyY2hhc2UtZGF0ZS1wc3QiID0gIjIwMDAtMDEtMDEgMDE6MDE6MDEgQW1lcmljYS9Mb3NfQW5nZWxlcyI7Cn0=";
"environment" = "Sandbox";
"pod" = "100";
"signing-status" = "0";
}
And the purchase info:
{
"original-purchase-date-pst" = "2000-01-01 01:01:01 America/Los_Angeles";
"unique-identifier" = "someUID";
"original-transaction-id" = "SomeTID";
"bvrs" = "3.6";
"transaction-id" = "SomeTID";
"quantity" = "1";
"in-app-ownership-type" = "PURCHASED";
"original-purchase-date-ms" = "some numeric time stamp in ms";
"unique-vendor-identifier" = "some UID";
"product-id" = "1";
"item-id" = "some Unique Item ID";
"version-external-identifier" = "0";
"is-in-intro-offer-period" = "false";
"purchase-date-ms" = "some numeric time stamp in ms";
"purchase-date" = "2000-01-01 01:01:01 Etc/GMT";
"is-trial-period" = "false";
"original-purchase-date" = "2000-01-01 01:01:01 Etc/GMT";
"bid" = "ipa app bundle name";
"purchase-date-pst" = "2000-01-01 01:01:01 America/Los_Angeles";
}
I'm facing this issue with deserializing of the javascript string into a C# object.
Any proper way to handle this deserialization?
Newtonsoft.Json is not able to handle it & I have looked its docs again & again to find any suitable methods but no success.
Is there any way other then to replace characters & make its json like?
Any help would be highly appreciated.
As others already mentioned, it's not JSON. But based on the example you provided you should be able to transform it to a readable JSON. It's not the most pretty solution, but it seems to work. It have some draw-backs:
It will only work when " = " is the separator.
It will only work when each field is separated by ; followed by line-break (windows-style).
private string MakeReadableJson(string base64Input)
{
var data = System.Convert.FromBase64String(base64Input);
string readableString = Encoding.UTF8.GetString(data);
var json = readableString.Replace("\" = \"", "\":\"").Replace(";\n", ",");
return json;
}
I use System.Text.JsonSerializer. Use it like so:
string json = #"{
""Id"": ""1000000872920320"",
""TransactionDateUtc"": ""2021-09-06T14:42:17Z"",
""ProductId"": ""1"",
""AutoRenewing"": false,
""PurchaseToken"": ""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"",
""State"": 0,
""ConsumptionState"": 0,
""IsAcknowledged"": false,
""Payload"": null
}";
var info = JsonSerializer.Deserialize<ResultFromApple>(json);
var purchaseTokenJson = MakeReadableJson(info.PurchaseToken);
PurchaseToken purchaseToken = JsonSerializer.Deserialize<PurchaseToken>(purchaseTokenJson, new JsonSerializerOptions()
{
AllowTrailingCommas = true
});
var purchaseInfoJson = MakeReadableJson(purchaseToken.PurchaseInfo);
PurchaseInfo purchaseInfo = JsonSerializer.Deserialize<PurchaseInfo>(purchaseInfoJson, new JsonSerializerOptions()
{
AllowTrailingCommas = true
});
And your models:
public class PurchaseToken
{
public string signature { get; set; }
[JsonPropertyName("purchase-info")]
public string PurchaseInfo { get; set; }
public string environment { get; set; }
public string pod { get; set; }
[JsonPropertyName("signing-status")]
public string SigningStatus { get; set; }
}
public class ResultFromApple
{
public string Id { get; set; }
public DateTime TransactionDateUtc { get; set; }
public string ProductId { get; set; }
public bool AutoRenewing { get; set; }
public string PurchaseToken { get; set; }
public int State { get; set; }
public int ConsumptionState { get; set; }
public bool IsAcknowledged { get; set; }
public object Payload { get; set; }
}
public class PurchaseInfo
{
[JsonPropertyName("original-purchase-date-pst")]
public string OriginalPurchaseDatePst { get; set; }
[JsonPropertyName("unique-identifier")]
public string UniqueIdentifier { get; set; }
[JsonPropertyName("original-transaction-id")]
public string OriginalTransactionId { get; set; }
public string bvrs { get; set; }
[JsonPropertyName("transaction-id")]
public string TransactionId { get; set; }
public string quantity { get; set; }
[JsonPropertyName("in-app-ownership-type")]
public string InAppOwnershipType { get; set; }
[JsonPropertyName("original-purchase-date-ms")]
public string OriginalPurchaseDateMs { get; set; }
[JsonPropertyName("unique-vendor-identifier")]
public string UniqueVendorIdentifier { get; set; }
[JsonPropertyName("product-id")]
public string ProductId { get; set; }
[JsonPropertyName("item-id")]
public string ItemId { get; set; }
[JsonPropertyName("version-external-identifier")]
public string VersionExternalIdentifier { get; set; }
[JsonPropertyName("is-in-intro-offer-period")]
public string IsInIntroOfferPeriod { get; set; }
[JsonPropertyName("purchase-date-ms")]
public string PurchaseDateMs { get; set; }
[JsonPropertyName("purchase-date")]
public string PurchaseDate { get; set; }
[JsonPropertyName("is-trial-period")]
public string IsTrialPeriod { get; set; }
[JsonPropertyName("original-purchase-date")]
public string OriginalPurchaseDate { get; set; }
public string bid { get; set; }
[JsonPropertyName("purchase-date-pst")]
public string PurchaseDatePst { get; set; }
}
I would use Pidgin to parse something like this.
Here's some code that parses your data into a Dictionary<string, string> and prints out the results:
using System;
using System.Collections.Generic;
using System.Linq;
using Pidgin;
using static Pidgin.Parser;
namespace NotQuiteJsonParsing
{
class Program
{
const string PurchaseInfo = #"{
""original-purchase-date-pst"" = ""2000-01-01 01:01:01 America/Los_Angeles"";
""unique-identifier"" = ""someUID"";
""original-transaction-id"" = ""SomeTID"";
""bvrs"" = ""3.6"";
""transaction-id"" = ""SomeTID"";
""quantity"" = ""1"";
""in-app-ownership-type"" = ""PURCHASED"";
""original-purchase-date-ms"" = ""some numeric time stamp in ms"";
""unique-vendor-identifier"" = ""some UID"";
""product-id"" = ""1"";
""item-id"" = ""some Unique Item ID"";
""version-external-identifier"" = ""0"";
""is-in-intro-offer-period"" = ""false"";
""purchase-date-ms"" = ""some numeric time stamp in ms"";
""purchase-date"" = ""2000-01-01 01:01:01 Etc/GMT"";
""is-trial-period"" = ""false"";
""original-purchase-date"" = ""2000-01-01 01:01:01 Etc/GMT"";
""bid"" = ""ipa app bundle name"";
""purchase-date-pst"" = ""2000-01-01 01:01:01 America/Los_Angeles"";
}";
private static string IEnumerableCharToString(IEnumerable<char> value)
{
// Feel free to swap this with an alternative answer to https://stackoverflow.com/questions/8108313
return new string(value.ToArray());
}
// Parsers can be slow to build, so minimise the
// number of times this setup method is called. See
// https://github.com/benjamin-hodgson/Pidgin#speed-tips
private static Parser<char, Dictionary<string, string>> BuildBlockParser()
{
var stringParser = Char('"').Then(AnyCharExcept('"').AtLeastOnceUntil(Char('"')));
var lineParser = Map(
(key, value) => new KeyValuePair<string, string>(IEnumerableCharToString(key), IEnumerableCharToString(value)),
stringParser.Before(SkipWhitespaces).Before(Char('=')).Before(SkipWhitespaces),
stringParser.Before(SkipWhitespaces).Before(Char(';')).Before(SkipWhitespaces));
var linesParser = lineParser.AtLeastOnce().Map(pairs => new Dictionary<string, string>(pairs));
var blockParser = SkipWhitespaces.Then(Char('{')).Then(SkipWhitespaces).Then(linesParser).Before(Char('}'));
return blockParser;
}
static void Main()
{
var blockParser = BuildBlockParser();
var result = blockParser.ParseOrThrow(PurchaseInfo);
foreach (var (key, value) in result)
{
Console.WriteLine($"{key} = {value}");
}
}
}
}
This parser has the following limitations:
Values in key-value pairs are always strings, not numbers, booleans or anything else.
There is no support for escaped " characters in keys or values. I don't know how they would be escaped.
There is no support for escape sequences such as \r, \n, \t or \u0123.
It's a bit embarrassing. I saw the problem as the opposite before. Try this, I think this can meet the needs:
Parse JavaScript string
static void Main(string[] args)
{
var jsStr = #"{
""signature"" = ""some long base64 string"";
""purchase-info"" = ""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"";
""environment"" = ""Sandbox"";
""pod"" = ""100"";
""signing-status"" = ""0"";
}";
var model = GetModelFromJsStr<PurchaseToken>(jsStr);
}
public class PurchaseToken
{
[JsonPropertyName("signature")]
public string Signature { get; set; }
[JsonPropertyName("purchase-info")]
public string PurchaseInfo { get; set; }
[JsonPropertyName("environment")]
public string Environment { get; set; }
[JsonPropertyName("pod")]
public int Pod { get; set; }
[JsonPropertyName("signing-status")]
public int SigningStatus { get; set; }
}
public static T GetModelFromJsStr<T>(string jsStr) where T : new()
{
var model = new T();
var rows = jsStr.Split("\n").Select(item => item.Trim()).ToList();
foreach (var prop in typeof(T).GetProperties())
{
var jsonProperty = prop.GetCustomAttribute<JsonPropertyNameAttribute>();
if (jsonProperty != null)
{
var matchRow = rows.FirstOrDefault(row => row.StartsWith(#$"""{jsonProperty.Name}"" ="));
if (matchRow != null)
{
var pattern = #$"^""{jsonProperty.Name}"" = ""(.*)"";$";
var match = Regex.Match(matchRow, pattern);
if (match?.Groups?.Count > 1)
{
// convertible types can be extended
if (prop.PropertyType == typeof(int))
{
int.TryParse(match.Groups[1].Value, out var propValue);
prop.SetValue(model, propValue);
}
else
{
prop.SetValue(model, match.Groups[1].Value);
}
}
}
}
};
return model;
}
Was able to handle this by with following code using Newtonsoft.Json.JsonConverter:
Create models for the data
public class InAppPurchaseToken
{
public string Signature { get; set; }
[JsonProperty("purchase-info")]
public string PurchaseInfo { get; set; }
public string Environment { get; set; }
public string Pod { get; set; }
public string SigningStatus { get; set; }
}
public class InAppPurchaseInfo
{
[JsonProperty("original-purchase-date-pst")]
public string originalpurchasedatepst { get; set; }
[JsonProperty("unique-identifier")]
public string uniqueidentifier { get; set; }
[JsonProperty("original-transaction-id")]
public string originaltransactionid { get; set; }
public string bvrs { get; set; }
[JsonProperty("transaction-id")]
public string transactionid { get; set; }
public string quantity { get; set; }
[JsonProperty("in-app-ownership-type")]
public string inappownershiptype { get; set; }
[JsonProperty("original-purchase-date-ms")]
public string originalpurchasedatems { get; set; }
[JsonProperty("unique-vendor-identifier")]
public string uniquevendoridentifier { get; set; }
[JsonProperty("product-id")]
public string productid { get; set; }
[JsonProperty("item-id")]
public string itemid { get; set; }
[JsonProperty("version-external-identifier")]
public string versionexternalidentifier { get; set; }
[JsonProperty("is-in-intro-offer-period")]
public string isinintroofferperiod { get; set; }
[JsonProperty("purchase-date-ms")]
public string purchasedatems { get; set; }
[JsonProperty("purchase-date")]
public string purchasedate { get; set; }
[JsonProperty("is-trial-period")]
public string istrialperiod { get; set; }
[JsonProperty("original-purchase-date")]
public string originalpurchasedate { get; set; }
public string bid { get; set; }
[JsonProperty("purchase-date-pst")]
public string purchasedatepst { get; set; }
}
And the handle the parsing using following code (assuming you have deserialized the initial json as inAppPayData C# object):
public string GetJsonFromBase64JsStr(string base64JsStr)
{
if (string.IsNullOrWhiteSpace(base64JsStr))
return "";
var decodedStr2Parse = Encoding.UTF8.GetString(Convert.FromBase64String(base64JsStr));
//var ConvertedJsonStrComplete = decodedStr2Parse.Replace("\" = \"", "\":\"").Replace(";\n", ",").Replace(",}", "}"); //more error prone
var ConvertedJsonStrPartial = decodedStr2Parse.Replace("\" = \"", "\":\"").Replace(";\n", ",");
var ConvertedJsonStrComplete = ConvertedJsonStrPartial.Remove(ConvertedJsonStrPartial.LastIndexOf(",}"), 1);
return ConvertedJsonStrComplete;
}
//call the above function with base64JsString
var purchaseJsonStr = GetJsonFromBase64JsStr(inAppPayData.PurchaseToken);
var purchaseTokenObj = JsonConvert.DeserializeObject<InAppPurchaseToken>(purchaseJsonStr);
var purchaseInfoJsonStr = GetJsonFromBase64JsStr(purchaseTokenObj.PurchaseInfo);
var purchaseInfoObj = JsonConvert.DeserializeObject<InAppPurchaseInfo>(purchaseInfoJsonStr);
Today I've wanted to write a webscraper that searches through a calendar website and finds the tags of events, so I can search through them and get info about who worked for the event.
The Problem is: The div I want to search for gets added by js, so how do I get it with htmlagilitypack?
The Calendar Website: https://esel.at/termine
My Code:
using System;
using HtmlAgilityPack;
using System.Linq;
using System.Diagnostics;
using System.Threading;
namespace ESEL_Scraper
{
class Program
{
static void Main(string[] args)
{
string Url = $"https://esel.at/termine";
HtmlWeb web = new HtmlWeb();
HtmlDocument doc = web.Load(Url);
HtmlNode[] nodes = doc.DocumentNode.SelectNodes("//div[#class='content']").ToArray();
for(int i = 0; i < nodes.Length; i++) {
Console.WriteLine(nodes[i].InnerText);
}
}
}
}
SelectNodes returns null when it doesn't find what you're looking for. So that's why you get the null exception. There are no "div" elements with class = "content". If you change to a class that is used by a div element on that page you'll get results.
With HtmlAgility pack "SelectNodes" you need to do a null check in some way before using the result.
Short anwser: You can't. Parsing the web page for data, that gets added when the page loads is not possible by using HtmlAgilityPack - the initial source code of the page doesn't have the data.
Long anwser: There is probably some API call that gets the data for the events, and is then pushed via javascript to the page. Try to figure out what URL is used, and try to parse that. That would be this one: https://esel.at/api/termine/data?date=05.09.2020&selection=false
As it's stated Javascript append the content. Using basic network inspecting you will see that there is another network request.
What you get here is data in JSON format which gets appended in HTML using Javascript.
Instead of using HtmlAgility pack you will need to parse JSON. In the example below I have used Newtonsoft.Json package to do that.
Here is the code:
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
namespace ESEL_Scraper
{
internal class Program
{
private static void Main(string[] args)
{
//Simply create request to the API and deserialize JSON using the Root class
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
CookieContainer cookies = new CookieContainer();
// Set the date you want in the link, in this example it's 06.09.2020
var request = (HttpWebRequest)WebRequest.Create("https://esel.at/api/termine/data?date=06.09.2020&selection=false");
request.CookieContainer = cookies;
request.Method = "GET";
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36";
request.ContentType = "application/json";
request.Headers.Add("accept-language", "en,hr;q=0.9");
request.Headers.Add("accept-encoding", "");
request.Headers.Add("Upgrade-Insecure-Requests", "1");
WebResponse response = request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
string responseFromServer = reader.ReadToEnd();
reader.Close();
response.Close();
//Deserialize Json
Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(responseFromServer);
foreach (var el in myDeserializedClass.termine)
{
//Get any field you need
Console.WriteLine(el.title);
Console.WriteLine(el.location);
}
Console.ReadLine();
}
}
// Based on the JSON response https://pastebin.com/Xa5gSp50 I have generated classes using this website: https://json2csharp.com/
public class Termine
{
public int id { get; set; }
public string title { get; set; }
public string category { get; set; }
public string startdate { get; set; }
public string startdatetime { get; set; }
public string starttime { get; set; }
public string enddate { get; set; }
public List<object> runtime { get; set; }
public string thumbnail { get; set; }
public string thumbnail_credits { get; set; }
public string type { get; set; }
public string recommended { get; set; }
public bool online_event { get; set; }
public object feed_urls { get; set; }
public string status { get; set; }
public string tags { get; set; }
public string url { get; set; }
public string sort_date { get; set; }
public string sort_category { get; set; }
public string location_url { get; set; }
public string location { get; set; }
}
public class Meta
{
public List<string> next { get; set; }
public DateTime now { get; set; }
public List<string> date { get; set; }
public DateTime end { get; set; }
public DateTime runtime { get; set; }
public int upcoming { get; set; }
public int running { get; set; }
public int termine { get; set; }
}
public class Root
{
public List<Termine> termine { get; set; }
public Meta meta { get; set; }
}
}
This question already has answers here:
Parse JSON array in JSON.NET
(3 answers)
Closed 5 years ago.
I have regex expression, which prevented me entering certain characters in the input field
onKeyMonitor ($event) {
const value = $event.key;
const pattern = /^[#$^<>[\]{}]*$/;
const regex = new RegExp(pattern);
if (regex.test(value)) {
$event.preventDefault();
}
}
But this is failing if I paste the same special characters, What needs to be done here.
I have written an onpaste event as well. with similar logic, but it is failing.
Initially you could define the following classes:
public class AnswerOption
{
[JsonProperty("parentQuestion")]
public string ParentQuestion { get; set; }
[JsonProperty("parentAnswer")]
public object ParentAnswer { get; set; }
[JsonProperty("answerOption")]
public object Option { get; set; }
}
public class Question
{
[JsonProperty("questionId")]
public int QuestionId { get; set; }
[JsonProperty("questionName")]
public string QuestionName { get; set; }
[JsonProperty("questionType")]
public string QuestionType { get; set; }
[JsonProperty("questionSequenceNumber")]
public int QuestionSequenceNumber { get; set; }
[JsonProperty("pageNo")]
public int PageNo { get; set; }
[JsonProperty("highlightedText")]
public string HighlightedText { get; set; }
[JsonProperty("isDynamicText")]
public string IsDynamicText { get; set; }
[JsonProperty("answerOptions")]
public IList<AnswerOption> AnswerOptions { get; set; }
}
public class DataObj
{
[JsonProperty("surveyId")]
public int SurveyId { get; set; }
[JsonProperty("questions")]
public IList<Question> Questions { get; set; }
}
public class Example
{
[JsonProperty("dataObj")]
public DataObj DataObj { get; set; }
[JsonProperty("errorCode")]
public int ErrorCode { get; set; }
[JsonProperty("errorMessage")]
public string ErrorMessage { get; set; }
}
Then you could deserialize your json as below:
var example = JsonConvert.DeserializeObject<Example>(json);
where json is a variable that holds the json you want to deserialize.
Last you could access the firsts question id as below:
labl1.text = example.DataObj?.Questions?.FirstOrDefault()?.QuestionId;
Use this website to help you generate C# classes from Json string http://json2csharp.com/
Note: Don't forget to double the data type.
This question already has an answer here:
How to get the values from the Model and into Views Javascript (Visual Studio 2015 mvc)
(1 answer)
Closed 6 years ago.
How do I set a list of objects coming from my viewmodel to a javascript variable to use in my js file? I'm getting an error when I try to set it.
Here is my viewmodel
public class TargetListAddressesViewModel
{
public List<Address> Addresses { get; set; }
public int OrganizationId { get; set; }
}
Here is the address object
public partial class Address
{
[Column] public int AddressId { get; set; }
[Column] public bool IsPrimary { get; set; }
[Column] public int ParentId { get; set; }
[Column] public int ParentTypeId { get; set; }
[Column] public int AddressTypeId { get; set; }
[Column] public string Address1 { get; set; }
[Column] public string Address2 { get; set; }
[Column] public string City { get; set; }
[Column] public string State { get; set; }
[Column] public string PostalCode { get; set; }
[Column] public string Country { get; set; }
[Column] public string AddressHash { get; set; }
[Column] public decimal Latitude { get; set; }
[Column] public decimal Longitude { get; set; }
[Column] public string ModifiedBy { get; set; }
}
Here is where I try and set it to a js variable, but it throws an error that says "VM320917:3 Uncaught SyntaxError: Unterminated template literal"
<script type="text/javascript">
var organizationId = #Html.Raw(Model.OrganizationId);
var addresses = #Html.Raw(Model.Addresses);
</script>
var addresses = #Html.Raw(Json.Encode(Model.Addresses))
I'm trying to figure out how to send the MVC Model to my ActionResult method, but the data on the AccountsManagementDetailsModel model is always empty or null, even though the model object itself is properly constructed, only with empty properties.
My method on the controller:
public async Task<ActionResult> ResetPassword(AccountsManagementDetailsModel model)
{
...
}
My JQuery:
var form = $('<form action="#Url.Action("ResetPassword", "AccountsManagement")" method="POST">');
var input = $("<input>")
.attr("type", "hidden")
.attr("name", "model").val(#Html.Raw(Json.Encode(Model)));
form.append(input + "</input></form>");
form.appendTo('body').submit();
My AccountsManagementDetailsModel:
public class AccountsManagementDetailsModel : UserInfo
{
public bool New { get; set; }
}
public class UserInfo
{
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[Display(Name = "Username")]
public string UserName { get; set; }
[Required]
[Display(Name = "First Name")]
public string FirstName { get; set; }
[Required]
[Display(Name = "Last Name")]
public string LastName { get; set; }
public bool Customer { get; set; }
public string CustomerID { get; set; }
public bool MustChangePassword { get; set; }
[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd hh:mm}", ApplyFormatInEditMode = true)]
public DateTime? LastLogin { get; set; }
}
What am I doing wrong?
The right way to sent your model is create inputs for each property of your model. It could be difficult but you can use EditorTemplate that generate you html with assistance of HtmlHelpers.
The easiest way that i can see is to change your code like this:
var form = $('<form action="#Url.Action("ResetPassword", "AccountsManagement")" method="POST">' + formHtml + "</form>");
var formHtml = '#Html.Raw(Html.EditorForModel().ToString().Replace("\r\n", "<br />"))';
form.append(formHtml + "</form>");
form.appendTo('body').submit();
Helper EditorForModel should create valid inputs (with right name attributes) for you and allow you to post model to controller and bind it there.
Anyway if you don't want to change your code this way you can change your controller code like this:
public async Task<ActionResult> ResetPassword(string model)
{
AccountsManagementDetailsModel modelBind = new JavaScriptSerializer().Deserialize<AccountsManagementDetailsModel>(model);
}
This lines should deserialize your serialized string from Json to your model.