using System;using System.Data;using System.Text;using System.IO;namespace TestApp{    class Program    {        static void Main()        {            DataSet ds = new DataSet("carRepairs");            string path = Environment.CurrentDirectory;            path = Directory.GetParent(path).FullName;            path = Directory.GetParent(path).FullName;            path = Path.Combine(path, "toucai.xsd");            ds.ReadXmlSchema(path);            Console.WriteLine(ds.Tables.Count);                    }                 }}