class DsProducts
    {
        public SqlConnectionString Connectionstring { set; get; }
 
 
        public  DsProducts()
        {
            Fill();
        }
 
        public void Connection()
        {
            // Verbindung definieren
            ConnectionString = _
              ConfigurationManager.ConnectionStrings["SQLServer"].ConnectionStr_
              ing;  // Holt den Wert aus App.config
 
 
 
        }
 
        public DataSet FillProducts()
        {
            Da = new SqlDataAdapter("Select * FROM Products", ConnectionString);
            Ds = new DataSet();
            Da.Fill(Ds, "Products");
            return ds;
        }
    }
}