将截断字符串或二进制数据。语句已终止！ 这是声明原因呢？代码为下，请高手帮忙调试！！！

Question

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;namespace searchrow
{
    class Test
    {
        static void Main(string[] args)
        {
            SqlConnection con = new SqlConnection(@"server=.\hwq;database=northwind;uid=sa;pwd=sa");
            con.Open();
            SqlDataAdapter sda = new SqlDataAdapter("select CustomerID,CompanyName from Customers",con);
            SqlCommandBuilder scb = new SqlCommandBuilder(sda);            DataSet ds = new DataSet();
            sda.Fill(ds,"客户表");
            sda.Update(ds,"客户表");
            Console.WriteLine("Before deal wo have count is:{0}.",ds.Tables["客户表"].Rows.Count);            DataColumn[] keys=new DataColumn[1];
            keys[0]=ds.Tables["客户表"].Columns["CustomerID"];
            ds.Tables["客户表"].PrimaryKey = keys;            DataRow datarow = ds.Tables["客户表"].Rows.Find("ShuangWei");            if (datarow == null)
            {
                Console.WriteLine("NO Find!Do you want to add?If want input Y,or N!");
                string s=Console.ReadLine();
                if (s.ToLower() == "y")
                {
                    DataRow datarows = ds.Tables["客户表"].NewRow();
                    datarows["CustomerID"] = "ShuangWei";
                    datarows["CompanyName"] = "Doublewei Inc.";
                    ds.Tables["客户表"].Rows.Add(datarows);
                    sda.Update(ds, "客户表");
                }
                else
                {
                    Console.WriteLine("Ｆｉｎｉｓｈｅｄ！");
                }
 
                }
                
            else
            
            {
                Console.WriteLine("SuccessfullY Find!");
            }
            sda.Update(ds,"客户表");
            con.Close();
            Console.WriteLine("After deal ,wo have count:{0}.",ds.Tables["客户表"].Rows.Count);
            Console.ReadKey();        }
    }
}

Answer 1

检查CustomerID和CompanyName两个字段的定义，这里长度超出