Read schema and reload data with DataSet : DataSet « ADO.Net « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. ADO.Net
3. DataSet

using System;
using System.Data;
using System.Data.SqlClient;

public class SaveDataSet
{
    private static string connectionString = "Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI";

    public static void Main() 
    {
        string SQL = "SELECT CategoryID, CategoryName,Description FROM Categories";

        SqlConnection con = new SqlConnection(connectionString);
        SqlCommand com = new SqlCommand(SQL, con);
        SqlDataAdapter adapter = new SqlDataAdapter(com);
        DataSet ds = new DataSet("Nortwind");

        con.Open();
        adapter.FillSchema(ds, SchemaType.Mapped, "Categories");
        adapter.Fill(ds, "Categories");
        con.Close();

        ds.WriteXmlSchema("mydata.xsd");
        ds.WriteXml("mydata.xml");

        ds.Reset();


        ds.ReadXmlSchema("mydata.xsd");
        ds.ReadXml("mydata.xml");

        Console.WriteLine(ds.GetXml());
    }
}