Blazor: Skip the initial validation for dynamically added form content

I’ve been trying to skip the initial validation for dynamically added content but to no avail.

The problem

I have a form model object with a list of children objects. Whenever I add another child in the list during runtime, the child gets validatated even though the child’s fields were not even touched by the user. I would like for the newly added child to not be subject to validation right after creation. In other words, I want to skip the initial validation for such children.

Reproducing the problem (simplified example)

Index.razor html

<EditForm EditContext="EditContext" OnValidSubmit="@HandleValidSubmit">
        <ObjectGraphDataAnnotationsValidator />

        <div>
            <section>
                <label>
                    Name
                    <InputText @bind-Value="Model.Name" />
                    <ValidationMessage For="() => Model.Name" />
                </label>
            </section>

            @foreach (var item in Model.Items)
            {
                <section>
                    <label>
                        Name
                        <InputText @bind-Value="item.Name" />
                        <ValidationMessage For="() => item.Name" />
                    </label>
                </section>
            }
        </div>

        <section>
            <button @onclick="AddItem">Add Item</button>
            <button type="submit" disabled="@(!IsFormValid)">Create</button>
        </section>
</EditForm>

Index.razor code

...

protected override void OnInitialized()
{
    EditContext = new(Model);
    EditContext.OnFieldChanged += HandleFieldChanged;
    EditContext.OnValidationRequested += HandleValidationRequested;
    MessageStore = new(EditContext);
}

...

private void AddItem()
{
    Model.Items.Add(new ItemModel());
}

Any ideas?

More info

• framework: .NET 6
• project type: .NET Maui Blazor

[IonutArhire]

Been away from github and my pet project for quite some time but today I had a look once more.

Turns out the described behaviour was due to my own code where I overwrote a validation lifecycle event.

Sorry for the mistake. This issue can be closed.

[msftbot[bot]]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

See our Issue Management Policies for more information.