Hi Pratura,
Thanks for contacting Syncfusion support.
We have completed the ASP.NET Core support for ReportViewer. It is planned to include in our Essential studio 2018 volume 1 main release, which is tentatively scheduled to be released in the month of February. Once the ASP.NET Core support is provided for ReportViewer control, then we will included the document in our help documentation link (
https://help.syncfusion.com/aspnet-core/overview).
Regards,
Yuvaraj D.