SQL数据更新的问题

这是我的代码：
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;


namespace 嘿嘿
{
class Program
{
static void Main(string[] args)
{
SqlConnection myConnection = new SqlConnection("server=localhost;database=SB;uid=sa;pwd=123");
myConnection.Open();
SqlDataAdapter myDataAdapter = new SqlDataAdapter("select * from information",myConnection);
SqlCommandBuilder myCommandBuilder = new SqlCommandBuilder(myDataAdapter);
DataSet myDataset = new DataSet();
myDataAdapter.Fill(myDataset, "information");
myDataset.Tables["information"].Rows[0]["name"] = "大便";
Console.WriteLine("{0}", myDataset.Tables["information"].Rows[0]["name"]);
try
{
myDataAdapter.Update(myDataset, "information");
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
myConnection.Close();
Console.ReadKey();
}
}
}

这是数据库内容。数据库名是SB

这是异常：

孬啊。这是为什么呢。

你写的是select查询语句怎么用了myDataAdapter的更改数据的方法呢

调用的方法不对吧