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If I use the 

RowDeselected event of grid control, in blazor client side project, it throws the error:

Uncaught (in promise) Error: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: [. Path 'rowIndex', line 1, position 13.

My .razor page is:

@page "/testgrid"


@code{ EjsGrid DefaultGrid; public int GridHeight; public List Orders { get; set; } protected override void OnInit() { Orders = Enumerable.Range(1, 75).Select(x => new Order() { OrderID = 1000 + x, CustomerID = (new string[] { "ALFKI", "ANANTR", "ANTON", "BLONP", "BOLID" })[new Random().Next(5)], Freight = 2.1 * x, OrderDate = DateTime.Now.AddDays(-x), }).ToList(); } public class Order { public int? OrderID { get; set; } public string CustomerID { get; set; } public DateTime? OrderDate { get; set; } public double? Freight { get; set; } } public void RowDeselectHandler(RowDeselectEventArgs args) { Console.WriteLine("deselect"); // Here you can customize your code } public void Load(object args) { var RowHeight = 35; //height of the each row Int32.TryParse(this.DefaultGrid.Height, out GridHeight); //grid height var PageSize = (this.DefaultGrid.PageSettings as GridPageSettings).PageSize; //initial page size var PageResize = ((GridHeight) - (PageSize * RowHeight)) / RowHeight; //new page size is obtained here (this.DefaultGrid.PageSettings as GridPageSettings).PageSize = PageSize + Math.Floor(PageResize); } }