using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
namespace merge
{
class merge
{
static void Main(string[] args)
{
DataSet regularbooks = new DataSet("RegularBooks");
DataSet bestsellers = new DataSet("BestSellers");
DataTable regulartable = new DataTable("books");
DataTable sellertable = new DataTable("books");
DataColumn newcol = new DataColumn("ISBN",typeof(string));
regulartable.Columns.Add(newcol);
newcol = new DataColumn("Title", typeof(string));
regulartable.Columns.Add(newcol);
newcol = new DataColumn("ISBN", typeof(string));
sellertable.Columns.Add(newcol);
newcol = new DataColumn("Title", typeof(string));
sellertable.Columns.Add(newcol);
newcol = new DataColumn("WeekOnTop10", typeof(int));
newcol.DefaultValue = 0;
sellertable.Columns.Add(newcol);
//add book to regular table
DataRow newbook = regulartable.NewRow();
newbook["ISBN"] = "154565555";
newbook["Title"] = ".net compact framework";
regulartable.Rows.Add(newbook);
newbook = regulartable.NewRow();
newbook["ISBN"] = "1524455";
newbook["Title"] = "c#";
regulartable.Rows.Add(newbook);
//add book to seller table
newbook = sellertable.NewRow();
newbook["ISBN"] = "35446545";
newbook["Title"] = "lucky man:a memoir";
newbook["WeekOnTop10"] = 3;
sellertable.Rows.Add(newbook);
newbook = sellertable.NewRow();
newbook["ISBN"] = "35446545";
newbook["Title"] = "lucky man:a memoir";
newbook["WeekOnTop10"] = 3;
sellertable.Rows.Add(newbook);
regularbooks.Tables.Add(regulartable);
bestsellers.Tables.Add(sellertable);
regularbooks.Merge(bestsellers, true, MissingSchemaAction.Add); //合并语句
foreach (DataRow book in regulartable.Rows)
{
Console.WriteLine("{0},ISBN:{1},Weeks On Top 10:{2}",book["Title"].ToString(),book["ISBN"].ToString(),(int)book["WeekOnTop10"]);
}
}
}
}