If a field in a MudForm fails validation, I want to disable the button that performs an action. e.g. if the user tabs out of the required text field on this example form and leaves the field blank, the “Create” button becomes disabled. I’ve tried a few different things but so far no luck. The most recent thing I’ve tried is setting the button’s Disabled field based on the form’s IsValid field thinking it might automatically get handled through binding but it doesn’t do anything.

Here’s the razor file:

<MudButton Variant="Variant.Filled" OnClick="HandleClick">Test</MudButton>

<MudMessageBox @ref="TestMessageBox" Title="Validation Test" CancelText="Cancel">
    <MessageContent>
        <MudForm @ref="TestForm">
            <AntiforgeryToken />
            <MudTextField @bind-Value="RequiredTextValue" Label="Required field"
                          Required />
            <MudTextField @bind-Value="OptionalTextValue" Label="Optional field"/>
        </MudForm>
    </MessageContent>
    <YesButton>
        <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="PerformCreation"
                   Disabled="TestForm.IsValid == false">Create</MudButton>
    </YesButton>
</MudMessageBox>

and here’s the code:

public partial class TestButton
{
    private MudMessageBox TestMessageBox { get; set; } = null!;

    public MudForm TestForm { get; set; } = null!;

    public string RequiredTextValue { get; set; } = string.Empty;

    public string OptionalTextValue { get; set; } = string.Empty;

    private async void HandleClick()
    {
        await TestMessageBox.Show();
    }

    private void PerformCreation(MouseEventArgs obj)
    {
        Console.WriteLine("Performing creation.");
    }
}