How can I provide a custom validation in an InputText that is generated through a foreach loop?

I've discovered that my Blazor design for this particular context is unusual, and I'm having trouble figuring out how to address it.

This is my data class models:

Data class model holder of database-fetched data

[Keyless]public class Specs{  [Column("id")]  public string? ID { get; set; }  [Column("name")]  public string? Name { get; set; }  [Column("value")]  public string? Value { get; set; }  [Column("rank")]  public int Rank { get; set; }}

Data class model holder of user-modified data

public class SpecsEntryHolder(string? id, string? n, string? val, int rank){  public string? ID { get; set; } = id;  public string? Name { get; set; } = n;  public string? Value { get; set; } = val;  public int Rank { get; set; } = rank;}

Redefine those data class models as a List

public List<Specs> SpecsList { get; set; } = [];public List<SpecsEntryHolder> SpecsEntryHolderList { get; set; } = [];

I cloned the data through this approach:

// SpecsList has already been fed with the database records.SpecsEntryHolderList = SpecsList.Select(v => new SpecsEntryHolder(v.ID, v.Name, v.Value, v.Rank)).ToList();

In the Razor UI page:

<EditForm EditContext="editContext" OnValidSubmit="UpdateSomething" FormName="edit" Enhance><DataAnnotationsValidator />    @foreach (var specs in SpecsEntryHolderList)    {<div class="col-12 col-sm-6 col-lg-3 mb-3 d-flex flex-column align-items-start"><label for="someText" class="form-label text-nowrap fw-bold">@($"{specs.Name}")</label><InputText id="@($"{specs.ID}")"                @bind-Value="specs.Value"                @onblur="FormatOnBlurSpecs"                class="form-control form-control-sm" /><ValidationMessage                For="() => specs.Value"                class="text-danger" /></div>    }</EditForm>

Here's what it looks like:

I was hoping this would work, but it doesn’t:

private void FormatOnBlurSpecs(FocusEventArgs e){    foreach (var spec in SpecsEntryHolderList)    {        var fieldIdentifier = new FieldIdentifier(spec, nameof(spec.Value));        if (string.IsNullOrWhiteSpace(spec.Value))        {            messageStore!.Add(fieldIdentifier, $"{spec.Name} is required.");        }        messageStore?.Clear(fieldIdentifier);    }}

I was trying to programmatically handle the validation for a certain field when it's empty through this approach (if it is possible), but I can't achieve what I wanted. I already know that the basic implementation of built-in validation in Blazor is through a set of fields that corresponds to each text entry. The approach I'm trying to achieve is to provide a custom validation instead, with a reconceptualized field binding source. I was trying to figure out this limitation and its corresponding workaround since it is obviously a dynamic setup of InputText.

Here is my additional question, aside from the title question for this context:

• Is there a workaround for this approach? If so, how can it be implemented properly?