EjsDataManager does not display records

I also set breakpoint on return new { Items = ..., Count = ...} statement

Hi Andrey,  

Greetings from Syncfusion support.  

Query1: “hits breakpoint, but nevertheless no records are displayed in the grid.” 

 

We suspect that you are facing Camel Case issue in Asp.Net Core. Normally, ASP.NET Core 1.0+ framework has camel casing issues while serializing the JSON Object. If you are facing the same camel casing issue while running the sample then please use the below codes in Startup.cs file to overcome that casing issue in Application level.  

 

In the below code, we have called the ContractResolver options under the Startup.cs file to avoid camel casing conversion during the serialization process. The is related to ASP.NET Core specifics and we suggest refer to the following article which describes how to overcome a similar issues. 

 

Reference Link: https://dotnetcoretutorials.com/2017/01/02/pascalcase-vs-camelcase-asp-net-core/  

 

Please use the code below, 

 

Note: WebAPI controller must return the values in form of Items and Count (refer below screenshot). Kindly ensure this in your sample.  

For your convenience we have prepared a sample which can be downloaded from below  

Sample: https://www.syncfusion.com/downloads/support/directtrac/248099/ze/ServerApp-1901621663  

Refer our UG documentation for your reference 

https://ej2.syncfusion.com/blazor/documentation/grid/data-binding/#web-api  

Query2: “I noticed that there is Adaptors.BlazorAdaptor but not found any documentation of using it” 

 

By default, Grid will consider the Adaptor Type as BlazorAdpator if we bind the dataSource in form of List of objects or IEnumerable. So it is not necessary to define Blazor adaptor separately in EjsDataManager. Refer our UG documentation for your reference. 

 

UG: https://ej2.syncfusion.com/blazor/documentation/grid/data-binding/#list-binding 

Please get back to us if you have further queries.   

Query3: “Ideally it would be better to have an ability to call await GetData(skip, take) method on blazor control directly instead of  creating api” 

You can use GetJsonAsync() method of http to retrieve the entire data from WebAPI controller to bind it to Grid in the form of list of objects. But this requirement can be achieve while using Client Side Blazor or Hosted Blazor Application. So kindly confirm your Blazor Application type. Based on your confirmation, we will provide the solution / possible way to retrieve data from API controller      

Regards, 

Vignesh Natarajan.  

Hi Manuel, 

  

Thanks for the update.  

  

Query: “But templated columns are not displaying (System.ArgumentException: Property set method not found) when I am using WebApiAdaptor” 

  

The reported issue is occurred when using the Model class with read-only properties (i.e) without set property in class definition. While using WebAPI Adaptor data will be returned in the form of string from the server. So they will be deserialized based on the model class provided in ModelType and assign it to context. Since you have defined some properties as read-only (i.e) without set property the reported issue is occurred. You can resolve the reported issue in either way.  

  

  

     

  

  

  

Please get back to us if you have further queries.   

   

Regards, 

Vignesh Natarajan. 

My POCO model has no read-only fields, but has TimeSpan { get; set;} property. 

WebApiAdaptor does not displays templated fields if POCO model has TimeSpan properties..

Hi Andrey,  

Query: “WebApiAdaptor does not displays templated fields if POCO model has TimeSpan properties..” 

We are able to reproduce the reported issue at our end too while preparing a sample as per your suggestion. We have considered the reported issue as a bug and logged defect report “Template column is not rendered properly while using Model class with TimeSpan property and WebAPI adaptor” for the same. Fix for the issue will be included in our upcoming Nuget release which is expected to be roll out in the first week of October 2019. 

You can track the status of the issue and contact us through the below feedback portal 

Feedback:   https://www.syncfusion.com/feedback/8960/template-column-is-not-rendered-properly-while-using-model-class-with-timespan-property-and-webapi  

Till then we appreciate your patience. 

EjsDataAdapter' TimeSpan  issue still not has been fixed in the latest 17.3.11 release.

I am getting:

Hi Andrey,  

We regret for the inconvenience caused.  

Due to some unforeseen circumstances, we will not be able to include the fix for this bug “Template column is not rendered properly while using Model class with TimeSpan property and WebAPI adaptor” in our latest Nuget release. But we will fix this bug and this will be included in our subsequent Bi-Weekly Nuget release which is expected to be rolled out on or before 16^th October 2019.  

Until then we appreciate your patience. 

Regards, 

Hi Andrey,  

 

We are glad to inform that our latest Nuget package (17.3.0.17-beta) has been successfully rolled out. In this release we have included the fix for the issue “Template column is not rendered properly while using Model class with TimeSpan property and WebAPI adaptor”. Please find the latest Nuget package and release notes regarding the changes in Grid from below   

 

Nuget:  https://www.nuget.org/packages/Syncfusion.EJ2.Blazor/17.3.0.17-beta  

 

Release Note: https://ej2.syncfusion.com/blazor/documentation/release-notes/17.3.17/#grid  

 

Also ensure that you have referred the latest version script and css as below  

 

 

Please get back to us if you have further queries. 

 

Regards, 

Vignesh Natarajan.