Filtering not work with unchecked checkbox

Question

Hi,I have a grid with filtering allowed.

[...]

When filter "IsActive" is true, the filter works.When filtr "IsActive" is false, the filter does not work.Is it a bug?Thanks.See attachments for more infoAttachment: Capture_b421ffcd.zip

Hariharan J V · Answer

Hi Mini, 

Thanks for contacting Syncfusion support. 

We have tried to reproduce the reported issue based on given details, but its unsuccessful. The filter is working fine. We have prepared a sample for your convenience. Please download the sample from the link below, 
Sample: http://www.syncfusion.com/downloads/support/directtrac/general/ze/filter_core1387071555 

If you still face the issue, please get back to us with the following details, 


Share the full grid code example.
Share Grid package version.
Replicate the issue with above given sample.
Share Browser details.

Please get back to us if you need further assistance. 

Regards, 
Hariharan

Mini Dev · Answer

I replicate your sample and it works correctly.But my code does not work.MyController.cs[Route("[controller]")]public class TestController : Controller{ [HttpGet] public IActionResult Index() { ViewBag.usersSource = GetUsers(); return View(); } private IList GetUsers() { var users = new List { new User { UserId = 1, Email = "mario.rossi@gmail.com", FirstName = "Mario", LastName = "Rossi", IsActive = true }, new User { UserId = 1, Email = "luca.rossi@gmail.com", FirstName = "Luca", LastName = "Rossi", IsActive = false }, new User { UserId = 1, Email = "franco.rossi@gmail.com", FirstName = "Franco", LastName = "Rossi", IsActive = true }, new User { UserId = 1, Email = "alberto.rossi@gmail.com", FirstName = "Alberto", LastName = "Rossi", IsActive = false } }; return users; } }MyView.cshtml@using Syncfusion.EJ2

My User.cspublic int UserId { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string Email { get; set; } public bool IsActive { get; set; }My data source:"dataSource": ej.data.DataUtil.parse.isJson([ { "UserId": 1, "FirstName": "Mario", "LastName": "Rossi", "Email": "mario.rossi@gmail.com", "IsActive": true }, { "UserId": 1, "FirstName": "Luca", "LastName": "Rossi", "Email": "luca.rossi@gmail.com" }, { "UserId": 1, "FirstName": "Franco", "LastName": "Rossi", "Email": "franco.rossi@gmail.com", "IsActive": true }, { "UserId": 1, "FirstName": "Alberto", "LastName": "Rossi", "Email": "alberto.rossi@gmail.com" } ]) I notice that IsActive=false is not in data source list. Could be this the problem?How can i fix?

Hariharan J V · Answer

Hi Mini, We have validated the provided code example and we have achieved your requirement by using ‘ActionBegin’ and ‘ActionComplete’ event with its requestType as ‘filtering’. Please find the code example and sample for your reference. Code example

Sample: http://www.syncfusion.com/downloads/support/directtrac/general/ze/filter_core242272484.zip Documentation : https://ej2.syncfusion.com/documentation/grid/api-grid.html?lang=typescript#actionbegin https://ej2.syncfusion.com/documentation/grid/api-grid.html?lang=typescript#actioncomplete Regards, Hariharan

Mini Dev · Answer

Hithanks for the solution written above but in my model.cs has property IsActive=false valorized.            new User            {                UserId = 1,                Email = "luca.rossi@gmail.com",                FirstName = "Luca",                LastName = "Rossi",                                 IsActive = false            }but in datasource (page source on view.cshtml) the property IsActive is not in User model. In my data source model is the following:new User            {                UserId = 1,                Email = "luca.rossi@gmail.com",                FirstName = "Luca",                LastName = "Rossi"            }Why happens this?Why Do I lose the property IsActive in datasource if my user model has it valorized to false?

Madhu Sudhanan P · Answer

Hi Mini Dev, 
 
ASP.NET Core uses JSON.Net for serializing objects and we suspect that the properties with value as same as default values are not included in the serialized result by the JSON.Net. To include property even when the default value are same, decorate the IsActive property with the JsonProperty and set DefaultValueHandling as Include as follows. 
 





 
public class User 
{ 
    ... 
 
    [JsonProperty(DefaultValueHandling = DefaultValueHandling.Include)] 
    public bool IsActive { get; set; } 
} 
 
  
 
https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_DefaultValueHandling.htm 
 
Please try the above solution and let us know if you have any queries. 
 
Regards, 
Madhu Sudhanan P

Mini Dev · Answer

Yes, it was! Thanks for the correct solution!

Madhu Sudhanan P · Answer

Hi Mini Dev, 
 
Thanks for the update. We are glad that your requirement has been achieved. 
 
Regards, 
Madhu Sudhanan P