I have two problems with the grid.

Firstly, Email and Roles properties of the UserDto objects are not editable within the DataGrid. Despite following the MudBlazor documentation closely, I cannot find a way to enable editing for these properties.
Docs: https://www.mudblazor.com/components/datagrid#editing (section: Editing)

Secondly, the Email property is being displayed incorrectly within the DataGrid, showing up as System.Collections.Generic.List1[System.String]` instead of the actual email address.

Here’s a simplified version of my code:

@page "/admin/user/list"
@attribute [Authorize(Roles = "Admin")]
@using System.Net.Http.Json
@using DogObedience.Shared
@using DogObedience.Shared.Admin.User
@inject NavigationManager navigationManager
@inject IHttpClientFactory HttpClientFactory

<MudDataGrid 
    T="UserDto" 
    Items="@users" 
    [email protected]
    CommittedItemChanges="@CommittedItemChanges"
    Bordered="true" 
    Dense="true" 
    [email protected]>
    <Columns>
        <PropertyColumn Property="u => u.UserName" Title="Navn" Editable="false" />
        <PropertyColumn Property="u => u.Email" Title="Email" />
        <PropertyColumn Property="u => u.Roles" >
            <EditTemplate>
                <MudSelect @bind-Value="@context.Item.Roles" Required RequiredError="You must select a Role" Margin="@Margin.Dense" >
                @foreach (var role in identityRoles)
                {
                    <MudSelectItem Value="@role">@role</MudSelectItem>
                }
                </MudSelect>
            </EditTemplate>
        </PropertyColumn>
    </Columns>
</MudDataGrid>

@code {

    private List<UserDto> users = [

            new UserDto {
                Id = "1",
                UserName = "JohnDoe",
                Email = "[email protected]",
                Roles = new List<string> { "Admin", "Judge" } },
            
            new UserDto {
                Id = "2",
                UserName = "JaneDoe",
                Email = "[email protected]",
                Roles = new List<string> { "DogHandler" } } ];

    private List<string> identityRoles = ["Admin", "Judge", "DogHandler"]; // Hardcoded roles
    private HttpClient httpClient;

    protected override void OnInitialized()
    {
        httpClient = HttpClientFactory.CreateClient("Auth");
    }

    // events

    async Task CommittedItemChanges(UserDto user)
    {
        user.Roles = user.Roles.ToList();

        
    }
}```


What did I try:
Hardcoded the values in case I got the wrong values back from my API or in the wrong format.

I have looked at https://mudblazor.com/components/select#variants to see if I could learn something about the select component that maybe was missing from the MudDataGrid example.

What I was expecting:

Editable cells by setting EditMode to @DataGridEditMode.Cell.
I thought that the Email and Roles properties would become editable directly within the DataGrid by clicking on them and the email cell to be a select/dropdown.

I expected the Email property to display the actual email address.