Error when setting data source in grid

[Krasimir Ivanov]

Hello when setting the grid DataSource I am getting the following error: Uncaught (in promise) Error: System.InvalidCastException: Invalid cast from 'System.String' to 'Syncfusion.EJ2.RazorComponents.DataManagerRequest'. My code is: 

<EjsGrid id="Grid" ref="otherGrid" >

    <GridEditSettings allowAdding="true" allowEditing="true" allowDeleting="true" Mode="@EditMode.Dialog"></GridEditSettings>

    <GridColumns>

        <GridColumn ref=@col Field=@nameof(OrdersDetails.CustomerID) HeaderText="Customer Name" Width="120"></GridColumn>

        <GridColumn Field=@nameof(OrdersDetails.OrderDate) HeaderText=" Order Date" Format="yMd" TextAlign="@TextAlign.Right" Width="130"></GridColumn>

        <GridColumn Field=@nameof(OrdersDetails.Freight) HeaderText="Freight" Format="C2" TextAlign="@TextAlign.Right" MinWidth="10" Width="120" MaxWidth="200"></GridColumn>

        <GridColumn Field=@nameof(OrdersDetails.ShipCountry) HeaderText="Ship Country" Width="150"></GridColumn>

    </GridColumns>

</EjsGrid>

@functions{

    GridColumn col;

    // EjsGrid defaultGrid;

    EjsGrid otherGrid;

    public string Temp { get; set; }

    public List<OrdersDetails> gridData { get; set; }

    protected override void OnAfterRender()

    {

        base.OnAfterRender();

        this.otherGrid.DataSource = OrdersDetails.GetAllRecords();

        col.Template = "<a rel='nofollow' href='counter'>redirect</a>";

        this.otherGrid.GridLines = GridLine.Both;

  

    }

}

[Vijayanand S]

Hi Ivan, 

Could you please confirm that you have upgraded your project to .NET Core 3.0 Preview 6 version? If so, we suspect that your project may use the older NuGet package or browser still has the older script files, so we recommend you to clear the NuGet cache and browser cache and run your application.   

1. Delete / clear the package Syncfusion.EJ2.AspNet.Core.RazorComponents from the installed location ({system-driver}\Users\{user-name}\.nuget\packages\syncfusion.ej2.aspnet.core.razorcomponents).
2. Update Syncfusion.EJ2.AspNet.Core.RazorComponents to their latest version 17.1.0.52-beta using NuGet package manager.
3. Refresh the browser using Ctrl+F5 to force to cache refresh and fetch the latest scripts.

Please let me know if this helps. 

Regards, 

Vijay 

[Peter Groft]

Go to Solution. Please click the file->Options and Settings->Data Source Settings, and you will get the following data source settings navigator. Then select change source(highlighted in red line), please check the path, and open the file in the right format.

Greetings,

Peter

[Suganya Gopinath]

Peter,

Thank you for the suggestion shared to solve the issue. This will be very useful.

Please get back to us for further assistance. 

Regards,

Suganya Gopinath.