net11.0 
namespace Microsoft.EntityFrameworkCore.Query.Internal
{
    [DefaultMember("Item")]
    public class BufferedDataReader : DbDataReader
    {
        public override object! this[int ordinal] { get; }
    }
}
.NET
10.011.0
Information specific to net11.0
Assemblies

Microsoft.EntityFrameworkCore.Relational , Version=11.0.0.0, PublicKeyToken=adb9793829ddae60

Microsoft.EntityFrameworkCore.Relational , Version=10.0.5.0, PublicKeyToken=adb9793829ddae60

Referencing

Your project needs a package reference to Microsoft.EntityFrameworkCore.Relational.

Package Microsoft.EntityFrameworkCore.Relational (11.0.0-preview.2.26159.112) net11.0
Platform Restrictions

The property getter is supported on all platforms.

  • Built-in API
  • Package-provided API