using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace txt記事本文件的讀寫
{
    static class Program
    {
        /// <summary>
        /// 應用程序的主入口點。
        /// </summary>
        [STAThread]
        static void Main()
        {
            //SQLServer 附加mdf文件
            string dataDir = AppDomain.CurrentDomain.BaseDirectory;
            if (dataDir.EndsWith(@"/bin/Debug/") || dataDir.EndsWith(@"/bin/Release/"))
            {
                dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName;
                AppDomain.CurrentDomain.SetData("DataDirectory", dataDir);
            }

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

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.Data.SqlClient;
using System.IO;

namespace txt記事本文件的讀寫
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void BtnReadTXT_Click(object sender, EventArgs e)
        {

            if (odfImport.ShowDialog() == DialogResult.OK)
            {
                using (SqlConnection conn = new SqlConnection(@"Data Source=./SQLEXPRESS;AttachDbFilename=|DataDirectory|/TelphoneNo.mdf;Integrated Security=True;User Instance=True"))
                {
                    conn.Open();
                    using (FileStream fileStream = File.OpenRead(odfImport.FileName))  //打開txt文件
                    {
                        using (StreamReader stmReader = new StreamReader(fileStream))  //讀取txt文件
                        {
                            string line = null;
                            string TelNo = "";
                            string Name = "";
                            string strIns = "";

                            //sql 參數
                            strIns = "insert into PhoneNo(TelNO,Name) values(@telNO,@name) ";
                            SqlParameter[] sqlPara = new SqlParameter[] {
                                    new SqlParameter("telNO",TelNo),
                                    new SqlParameter("name",Name)
                                };
                            //把讀取出來的數據寫入.mdf
                            using (SqlCommand sqlCmd = new SqlCommand(strIns, conn))
                            {
                                //逐行讀取
                                while ((line = stmReader.ReadLine()) != null)
                                {
                                    string[] strTel = line.Split('-');
                                    TelNo = strTel[0].ToString();
                                    Name = strTel[1].ToString();

                                    sqlCmd.Parameters.AddRange(sqlPara);
                                    sqlCmd.ExecuteNonQuery();
                                    sqlCmd.Parameters.Clear(); //參數清除
                                }
                                MessageBox.Show("導入成功", "Read TXT");
                            }
                        }
                    }
                }
            }
            else
            {
                return;
            }

        }
    }
}