实例介绍
【实例简介】txt2access1
【实例截图】txt2access1
【核心代码】txt2access1
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.OleDb;
using System.IO;
namespace txttoaccess1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string str_FilePath = "D:\\2.txt";
//string str_DaraSource = "D:\\test.accdb";
String str_FolderPath = "D:\\text";
private void button1_Click(object sender, EventArgs e)
{
string P_Connection = string.Format(//创建数据库连接字符串
//"Provider=Microsoft.jet.OLEDB.4.0;Data Source=test.mdb;User Id=Admin");
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=test.accdb;User Id=Admin");
OleDbConnection P_OLEDBConnection = //创建连接对象
new OleDbConnection(P_Connection);
P_OLEDBConnection.Open();//连接到数据库
OleDbCommand P_OLEDBCommand = new OleDbCommand(//创建命令对象
"select * from [book]",
P_OLEDBConnection);
DataTable dt = new DataTable();
dt.Columns.Add("a");
dt.Columns.Add("b");
dt.Columns.Add("c");
dt.Columns.Add("d");
FileStream fs = new FileStream(str_FilePath, FileMode.Open, FileAccess.Read);
StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default);
string strLine = sr.ReadLine();
while (strLine != null)
{
string[] strArray = new string[4];
strArray = strLine.Split('\t');
DataRow dr = dt.NewRow();
dr[0] = strArray[0];
dr[1] = strArray[1];
dr[2] = strArray[2];
dr[3] = strArray[3];
//String SQL = "select * from [book] where [1] Like '%" dr[0] "%'";
String SQL = "select * from [book] where [1]='" dr[0] "'";
OleDbCommand cmd = new OleDbCommand(SQL, P_OLEDBConnection);
DataTable dt1 = new DataTable();
OleDbDataAdapter Adapter = new OleDbDataAdapter(cmd);
Adapter.Fill(dt1);
if (dt1.Rows.Count > 0)
{
MessageBox.Show(dr[0] "已存在,请修改文件名后导入");
dt.Clear();
return ;
}
else
{
dt.Rows.Add(dr);
strLine = sr.ReadLine();
}
}
for (int i = 0; i < dt.Rows.Count; i )
{
string sql = "insert into book values('" dt.Rows[i][0] "','" dt.Rows[i][1] "','" dt.Rows[i][2] "','" dt.Rows[i][3] "')";
P_OLEDBCommand.CommandText = sql;
P_OLEDBCommand.ExecuteNonQuery();
}
MessageBox.Show( "导入数据成功!");
sr.Close();
fs.Close();
P_OLEDBConnection.Close();
}
private void button2_Click(object sender, EventArgs e)
{
string P_Connection = string.Format(//创建数据库连接字符串
//"Provider=Microsoft.jet.OLEDB.4.0;Data Source=test.mdb;User Id=Admin");
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=test.accdb;User Id=Admin");
OleDbConnection P_OLEDBConnection = //创建连接对象
new OleDbConnection(P_Connection);
P_OLEDBConnection.Open();//连接到数据库
OleDbCommand P_OLEDBCommand = new OleDbCommand(//创建命令对象
"select * from [book]",
P_OLEDBConnection);
DataTable dt1 = new DataTable();
foreach (String fileName in Directory.GetDirectories(str_FolderPath)) //GetDirectories获取文件夹列表
{
FileInfo file = new FileInfo(fileName);//声明一个操作文件的实例
//String SQL = "select * from [book] where [1] Like '%" file.Name "%'";
String SQL = "select * from [book] where [1]='" file.Name "'";
OleDbCommand cmd = new OleDbCommand(SQL, P_OLEDBConnection);
OleDbDataAdapter Adapter = new OleDbDataAdapter(cmd);
Adapter.Fill(dt1);
}
P_OLEDBConnection.Close();
if (dt1.Rows.Count > 0)
{
for (int i = 0; i < dt1.Rows.Count; i )
{
Directory.Move(str_FolderPath "\\" dt1.Rows[i][0], str_FolderPath "\\" dt1.Rows[i][0] dt1.Rows[i][1] dt1.Rows[i][2] dt1.Rows[i][3]);
}
MessageBox.Show("修改成功!");
}
else
MessageBox.Show("未找到要修改文件夹!");
}
public static string ChangeFilesNames(string str_oldname)
{
string P_Connection = string.Format(//创建数据库连接字符串
//"Provider=Microsoft.jet.OLEDB.4.0;Data Source=test.mdb;User Id=Admin");
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=test.accdb;User Id=Admin");
OleDbConnection P_OLEDBConnection = //创建连接对象
new OleDbConnection(P_Connection);
P_OLEDBConnection.Open();//连接到数据库
OleDbCommand P_OLEDBCommand = new OleDbCommand(//创建命令对象
"select * from [book]",
P_OLEDBConnection);
//String SQL = "select * from [book] where [1] Like '%" str_oldname "%'";
String SQL = "select * from [book] where [1]='" str_oldname "'";
OleDbCommand cmd = new OleDbCommand(SQL, P_OLEDBConnection);
DataTable dt1 = new DataTable();
OleDbDataAdapter Adapter = new OleDbDataAdapter(cmd);
Adapter.Fill(dt1);
P_OLEDBConnection.Close();
string str_changedname="";
if (dt1.Rows.Count > 0)
{
str_changedname=str_oldname dt1.Rows[0][1] dt1.Rows[0][2] dt1.Rows[0][3];
}
else
MessageBox.Show("未找到该目录!");
if (str_changedname.Length > 248)
return str_changedname.Substring(0, 247);
else
return str_changedname;
}
private void button3_Click(object sender, EventArgs e)
{
textBox2.Text = ChangeFilesNames(textBox1.Text);
}
private void button4_Click(object sender, EventArgs e)
{
try
{
string P_Connection = string.Format(//创建数据库连接字符串
//"Provider=Microsoft.jet.OLEDB.4.0;Data Source=test.mdb;User Id=Admin");
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=test.accdb;User Id=Admin");
OleDbConnection P_OLEDBConnection = //创建连接对象
new OleDbConnection(P_Connection);
P_OLEDBConnection.Open();//连接到数据库
OleDbCommand P_OLEDBCommand = new OleDbCommand(//创建命令对象
"select * from [book]",
P_OLEDBConnection);
string cmdString = "delete from [book] where [1]= '" textBox3.Text "'";
//注意where处没有单引
P_OLEDBCommand.CommandText = cmdString;
P_OLEDBCommand.ExecuteNonQuery();
P_OLEDBConnection.Close();
MessageBox.Show(//弹出消息对话框
"数据删除成功！\r\n", "完成！");
}
catch (Exception ex)
{
MessageBox.Show(//弹出消息对话框
"数据删除失败！\r\n" ex.Message, "错误！");
}
}
private void button5_Click(object sender, EventArgs e)
{ try
{
string P_Connection = string.Format(//创建数据库连接字符串
//"Provider=Microsoft.jet.OLEDB.4.0;Data Source=test.mdb;User Id=Admin");
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=test.accdb;User Id=Admin");
OleDbConnection P_OLEDBConnection = //创建连接对象
new OleDbConnection(P_Connection);
P_OLEDBConnection.Open();//连接到数据库
OleDbCommand P_OLEDBCommand = new OleDbCommand(//创建命令对象
"select * from [book]",
P_OLEDBConnection);
string RefreshString = "update [book] set [2]='" textBox4.Text "' where [1]='" textBox5.Text "'";
P_OLEDBCommand.CommandText = RefreshString;
P_OLEDBCommand.ExecuteNonQuery();
P_OLEDBConnection.Close();
MessageBox.Show(//弹出消息对话框
"数据修改成功！\r\n", "完成！");
}
catch (Exception ex)
{
MessageBox.Show(//弹出消息对话框
"数据删除失败！\r\n" ex.Message, "错误！");
}
}
}
}
标签： Access
好例子网口号：伸出你的我的手 — 分享！
小贴士
感谢您为本站写下的评论，您的评论对其它用户来说具有重要的参考价值，所以请认真填写。
- 类似“顶”、“沙发”之类没有营养的文字，对勤劳贡献的楼主来说是令人沮丧的反馈信息。
- 相信您也不想看到一排文字/表情墙，所以请不要反馈意义不大的重复字符，也请尽量不要纯表情的回复。
- 提问之前请再仔细看一遍楼主的说明，或许是您遗漏了。
- 请勿到处挖坑绊人、招贴广告。既占空间让人厌烦，又没人会搭理，于人于己都无利。
关于好例子网
本站旨在为广大IT学习爱好者提供一个非营利性互相学习交流分享平台。本站所有资源都可以被免费获取学习研究。本站资源来自网友分享，对搜索内容的合法性不具有预见性、识别性、控制性，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，平台无法对用户传输的作品、信息、内容的权属或合法性、安全性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论平台是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二与二十三条之规定，若资源存在侵权或相关问题请联系本站客服人员，点此联系我们。关于更多版权及免责申明参见 版权及免责申明
网友评论
我要评论