Code
using System;using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
SqlConnection conn = new SqlConnection("Server=zhuobin;uid=sa;pwd=zhuobin;database=Northwind");
string sql = "select * from employees where country='UK'";
string upd = @"update employees set city=@city where employeeid=@employeeid";
try
{
//Create the DataAdapter
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = new SqlCommand(sql,conn);
//crate the dataset and fill it
DataSet ds = new DataSet();
da.Fill(ds,"employees");
//get the datatable reference
DataTable dt=ds.Tables["employees"];
//modify the city in the first row
dt.Rows[0]["city"] = "Xuzhou";
//Dislay the rows
foreach (DataRow row in dt.Rows)
{
Console.WriteLine("{0} {1} {2}",row["firstname"].ToString().PadRight(15),row["lastname"].ToString().PadLeft(25),row["city"]);
}
//update Employees
SqlCommand cmd = new SqlCommand(upd,conn);
//City
cmd.Parameters.Add("@city",SqlDbType.VarChar,10,"city");
//Employees id
SqlParameter parm = cmd.Parameters.Add("@employeeid",SqlDbType.Int,4,"employeeid");
parm.SourceVersion = DataRowVersion.Original;
//Update database
da.UpdateCommand = cmd;
da.Update(ds,"employees");
}
catch (SqlException ex)
{
Console.WriteLine("The Error:{0}", ex.Message);
}
finally
{
conn.Close();
}
Console.ReadLine();
}
}
}