Datagrid Inline Edit

Hello everyone

I am aiming to edit the data grid

It was difficult for me to see the demo "Data Grid InLine Editing", so I'm trying to make the characters in a simple column bold first.

I found that I needed an "Edit Template" to make the datagrid editable, but the code below didn't change it.

"Edit Template" is
How should I use it?

@page "/"

<h1>Hello, world!</h1>

Welcome to your new app.

<SurveyPrompt Title="How is Blazor working for you?" />

<div>
<RadzenCard>
    <RadzenGrid AllowFiltering="true" AllowPaging="true" PageSize="4" AllowSorting="true" Data="@(m_books)" TItem="Models.my_book" EditMode="DataGridEditMode.Single">
        <Columns>
            <RadzenGridColumn TItem="Models.my_book" Property="id" Title="id" Type="integer" >
                <EditTemplate>
                    <strong>${m_books.id}</strong>
                </EditTemplate>
            </RadzenGridColumn>
            <RadzenGridColumn TItem="Models.my_book" Property="title" Title="title" Type="string" />
            <RadzenGridColumn TItem="Models.my_book" Property="author" Title="author" Type="string" />
            <RadzenGridColumn TItem="Models.my_book" Property="price" Title="price" Type="integer" />
            <RadzenGridColumn TItem="Models.my_book" Property="publisher" Title="publisher" Type="string" />
        </Columns>
    </RadzenGrid>
</RadzenCard>
</div>


@code
{
    private RadzenTest.Models.blazordbContext ent;
    private IEnumerable<Models.my_book> m_books {get; set;}
    protected override void OnInitialized()
        {
            this.ent = new Models.blazordbContext();
            this.m_books = ent.my_books.ToList();
        }
}