namespace System.Data.Common
{
    public abstract class DbConnection : Component, IDbConnection, IAsyncDisposable, IDisposable
    {
        [DefaultValue("")]
        [RecommendedAsConfigurable(true)]
        [RefreshProperties(RefreshProperties.All)]
        [SettingsBindable(true)]
        public abstract string! ConnectionString { get; set; }
    }
}