Entity Framework Core interceptor to trim strings (remove leading and trailing spaces) before saving to database

StringTrimmerInterceptor.cs

using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Diagnostics;

namespace gist;

public class StringTrimmerInterceptor : ISaveChangesInterceptor
{
    public InterceptionResult<int> SavingChanges(DbContextEventData eventData, InterceptionResult<int> result)
    {
        if (eventData.Context != null)
        {
            TrimStrings(eventData.Context);
        }
        return result;
    }

    public ValueTask<InterceptionResult<int>> SavingChangesAsync(DbContextEventData eventData, InterceptionResult<int> result, CancellationToken cancellationToken = default)
    {
        if (eventData.Context != null)
        {
            TrimStrings(eventData.Context);
        }
        return ValueTask.FromResult(result);
    }

    private static void TrimStrings(DbContext dbContext)
    {
        var stringProperties = dbContext.ChangeTracker.Entries()
            .Where(e => e.State is EntityState.Added or EntityState.Modified)
            .SelectMany(e => e.Properties)
            .Where(p => p.CurrentValue != null && p.Metadata.ClrType == typeof(string));

        foreach (var property in stringProperties)
        {
            var currentValue = (string)property.CurrentValue!;
            property.CurrentValue = currentValue.Trim();
        }
    }
}