Thanks for your interest in Syncfusion products.
Query: “Any Hint to implement the Custom Adaptor”
Thank you for your inquiry. We have already considered this requirement “Custom Adaptor support in Blazor” as a feature and we have planned to implement to this requirement in our 2019 Volume 2 Service Pack 1 Nuget release which is expected to be rolled out in the month end of July 2019.
Till then you can track the status of the requirement using below feedback link
Please let us know if you have any other questions on this.