RadzenDatagrid The 'np' (null-propagation)

Radzen.Blazor Components
1

Hi, I'm trying to group columns using the drag and drop column header event.
What the TItem receives is an object.
In the properties of the table I have the AllowGrouping="true" and in the creation of the columns I have Groupable="true" and GroupProperty="@x.name".
And from the browser console I get the following error:

Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: The 'np' (null-propagation) function requires the first argument to be a MemberExpression, ParameterExpression or MethodCallExpression
The 'np' (null-propagation) function requires the first argument to be a MemberExpression, ParameterExpression or MethodCallExpression (at index 0)

2

Any additional info how to reproduce this? Works normally on all grouping demos:

3

Yes, right. In the columns I'm doing this:

@foreach (System.Reflection.PropertyInfo x in ListObject)
        {
            <RadzenDataGridColumn 
                TItem="object" Type="@x.PropertyType" Title="@x.Name"
                Width="150px" Property="@x.Name" GroupProperty="@x.Name" Groupable="true" SortProperty="@x.Name" Reorderable="true">
                <Template Context="data">
                    @(x.PropertyType == typeof(DateTime) ? 
                        Convert.ToDateTime(x.GetValue(data)).ToString("dd/MM/yyyy") : 
                        x.GetValue(data))
                </Template>
            </RadzenDataGridColumn>
        }

And the properties of my table are:

<RadzenDataGrid 
    @ref="@ReferenceTable"
    TItem="object"
    @bind-Value="@SelectedRows"
    Data="@ResultList"
    class="w-100"       
    AllowColumnResize="true"
    AllowColumnReorder="true"
    AllowFiltering="true"
    AllowGrouping="true"
    AllowSorting="true"
    AllowPaging="true"
    AllowRowSelectOnRowClick="true"
    SelectionMode="DataGridSelectionMode.Multiple"
    PagerAlwaysVisible="true"
    PagerPosition="PagerPosition.Bottom"
    GroupPanelText="Arrastre una columna para agrupar los datos por ella.">
4

Unfortunately I'm unable to tell what's going on from the provided code. You can attach Radzen.Blazor source project to your application to debug your case.

5

Sorry, I get this message "Sorry, new users can not upload attachments." and I can't do it.
Maybe passing my component files I can visualize it.

6

You misunderstood my advice. Here is the source code of Radzen.Blazor:

You can attach it to your application to debug the exception.