<SPAN style="FONT-SIZE: 14px">using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data.SqlClient;

namespace txt导入至数据库
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (ofdfile.ShowDialog() == DialogResult.OK) //点击form窗体上的导入按钮
            {
               using (FileStream fileStream=File.OpenRead(ofdfile .FileName)) //选txt文本
               {
                using (StreamReader streamreader = new StreamReader(fileStream))
                {
                    using (SqlConnection conn = new SqlConnection("server=.;database=test;user id=sa;password=123456")) //打开数据库连接
                     {
                        conn.Open();
                        string lines = null;
                        using (SqlCommand cmd = conn.CreateCommand())
                        {
                            cmd.CommandText = "insert into T_persons(name,age)values(@name,@age)";                          
                            while ((lines=streamreader.ReadLine()) != null)
                            {                          
                                string[] strs = lines.Split('|');
                                string name = strs[0].ToString();
                                int age = Convert.ToInt32(strs[1]);
                                cmd.Parameters.Clear();
                                cmd.Parameters.Add(new SqlParameter("name",name));
                                cmd.Parameters.Add(new SqlParameter("age",age));
                                cmd.ExecuteNonQuery();                               
                            }
                        }
                    }
                }
             }
               MessageBox.Show("数据导入成功");
          }
       }
    }
}

</SPAN>