radzen-blazor/RadzenBlazorDemos/Pages/NumericRangeValidatorConfig.razor

@using Radzen
@using System.Text.Json

<RadzenStack class="rz-p-0 rz-p-md-12">
    <RadzenCard Variant="Variant.Outlined" Style="width: 100%">
        <RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" Gap="0.5rem">
            <RadzenCheckBox @bind-Value=@popup Name="popup"></RadzenCheckBox>
            <RadzenLabel Text="Display validators as popup" Component="popup" />
        </RadzenStack>
    </RadzenCard>

    <RadzenTemplateForm TItem="Model" Data=@model Submit=@OnSubmit InvalidSubmit=@OnInvalidSubmit>
        <RadzenFieldset Text="Bid info">
            <RadzenStack Gap="2rem" class="rz-p-4 rz-p-md-12">
                <RadzenRow AlignItems="AlignItems.Center" RowGap="0.25rem">
                    <RadzenColumn Size="12" SizeMD="4" class="rz-text-align-start rz-text-align-md-end">
                        <RadzenLabel Text="Quantity" Component="Quantity" />
                        <small style="display: block">(1-10 items)</small>
                    </RadzenColumn>
                    <RadzenColumn Size="12" SizeMD="8">
                        <RadzenNumeric Name="Quantity" @bind-Value=@model.Quantity @oninput=@OnInput Style="display: block; width: 100%;" />
                        <!-- Use 'm' (decimal), 'f' (float) or 'd' (double) as numeric literal suffix when setting Min and Max -->
                        <RadzenNumericRangeValidator Component="Quantity" Min="1m" Max="10m" Text="Quantity should be between 1 and 10" Popup=@popup Style="position: absolute" />
                    </RadzenColumn>
                </RadzenRow>
                <RadzenRow AlignItems="AlignItems.Center" class="rz-mt-4">
                    <RadzenColumn Size="12" Offset="0" SizeMD="8" OffsetMD="4">
                        <RadzenButton ButtonType="ButtonType.Submit" Text="Submit"></RadzenButton>
                    </RadzenColumn>
                </RadzenRow>
            </RadzenStack>
        </RadzenFieldset>
    </RadzenTemplateForm>

    <EventConsole @ref=@console />
</RadzenStack>

@code {
    class Model
    {
        public decimal Quantity { get; set; }
    }

    bool popup;

    Model model = new Model();
    EventConsole console;

    void OnInput(ChangeEventArgs args)
    {
        Log("oninput", args.Value.ToString());
    }

    void Log(string eventName, string value)
    {
        console.Log($"{eventName}: {value}");
    }

    void OnSubmit(Model model)
    {
        Log("Submit", JsonSerializer.Serialize(model, new JsonSerializerOptions() { WriteIndented = true }));
    }

    void OnInvalidSubmit(FormInvalidSubmitEventArgs args)
    {
        Log("InvalidSubmit", JsonSerializer.Serialize(args, new JsonSerializerOptions() { WriteIndented = true }));
    }
}