How to Pass Additional Data With the DataSourceResult Back to the View

Environment

Product

Telerik UI for ASP.NET Core

Description

How can I pass additional data with the DataSourceResult from the Controller back to the View?

Solution

The desired result can be achieved by following the steps below:

• Store the output of the ToDataSourceResult method call in a variable.
• Return a custom Json result with the same field names and add the additional fields
• Add a RequestEnd event handler to retrieve the additional data in the View

var resultFinal = result.ToDataSourceResult(request);
return Json(new
   {
       Data = resultFinal.Data,
       Total = resultFinal.Total,
       AggregateResults = resultFinal.AggregateResults,
       Errors = resultFinal.Errors,
       myAdditionalParam= "additional data", // Add the extra value
    });

 .DataSource(dataSource => dataSource
                .Events(ev=>ev.RequestEnd("requestEnd"))
                )
<script>
    function requestEnd(e){
        //access the additional data sent from the Controller
        console.log(e.response.myAdditionalParam);
    }
</script>

More ASP.NET Core DataSource Resources

• ASP.NET Core DataSource Documentation
• Client-Side API Reference of the DataSource for ASP.NET Core
• Server-Side API Reference of the DataSource for ASP.NET Core