using System.Data; using System.Data.SqlClient; using System.Xml; class CommandXmlTest { public static void main() { string conStr = "Server=localhost;user id=sa;password=wpsjfpxj;database=northwind"; string xquery = "select * from Address FOR XML AUTO, ELEMENT"; SqlConnection conn = new SqlConnection(conStr); conn.Open(); SqlCommand xcomm = new SqlCommand(xquery, conn); XmlReader reader = null;..