Retrieving Schema and Constraints for a 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;

    class Program
    {
        static void Main(string[] args)
        {
            string sqlConnectString = "Data Source=(local);" +
                "Integrated security=SSPI;Initial Catalog=AdventureWorks;";

            string sqlSelect = "SELECT ContactID,FirstName, LastName FROM Person.Contact";

            SqlDataAdapter da = new SqlDataAdapter(sqlSelect, sqlConnectString);

            DataSet ds = new DataSet( );
            da.Fill(ds, "Contact");

            Console.WriteLine("GetXmlSchema( ) = {0}", ds.GetXmlSchema( ));
            DataSet dsSchema = new DataSet( );
            da.FillSchema(dsSchema, SchemaType.Source, "Person.Contact");
            da.Fill(dsSchema, "Contact");
            Console.WriteLine(dsSchema.Tables.Count);
            Console.WriteLine("GetXmlSchema( ) = {0}", dsSchema.GetXmlSchema( ));
        }
    }