CslaValidator.cs

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using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Forms;
 
namespace Csla.Blazor
{
 
  public class CslaValidator : ComponentBase
  {
    
    [CascadingParameter]
    public EditContext CurrentEditContext { get; set; }
 
    protected override void OnInitialized()
    {
      // Check that the EditContext parameter has been made available
      if (CurrentEditContext == null)
      {
        // No cascading parameter is available; we are probably not inside an EditForm component
        throw new InvalidOperationException(
          string.Format(Csla.Properties.Resources.CascadingEditContextRequiredException,
          nameof(CslaValidator), nameof(EditContext)));
      }
 
      // Wire up validation to the context we have been provided
      CurrentEditContext.AddCslaValidation();
    }
  }
}