netcoreapp3.0 
namespace System.Data.SqlClient
{
    [DefaultMember("Item")]
    public class SqlDataReader : DbDataReader, IDbColumnSchemaGenerator, IDisposable
    {
        public ReadOnlyCollection<DbColumn> GetColumnSchema();
    }
}
.NET
5.06.07.08.09.010.011.0
.NET Core
2.12.23.03.1
Information specific to netcoreapp3.0
Assembly

System.Data.SqlClient , Version=5.0.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

Your project needs a package reference to System.Data.SqlClient.

Package System.Data.SqlClient (5.0.0-alpha.1.19618.1) netcoreapp2.1
Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API