c#做的登录系统 （oracle数据库连接）

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace MessageManage
{
    public partial class ChangePassword : Form
    {
        public ChangePassword（）
        {
            InitializeComponent（）;
        }

        private void ChangePassword_Load（object sender EventArgs e）
        {
            this.txtID.Text = DB.ID.ToString（）;
        }

        private void btnCancel_Click（object sender EventArgs e）
        {
            this.Close（）;
        }

        private void btnConfirm_Click（object sender EventArgs e）
        {
            try
            {
                string ID = this.txtID.Text.ToString（）;
                string 

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      28672  2008-05-07 09:41  登录窗口\MessageManage\bin\Debug\MessageManage.exe

     文件      42496  2008-05-07 09:41  登录窗口\MessageManage\bin\Debug\MessageManage.pdb

     文件       5632  2005-12-08 14:51  登录窗口\MessageManage\bin\Debug\MessageManage.vshost.exe

     文件       2207  2008-05-07 09:33  登录窗口\MessageManage\ChangePassword.cs

     文件       7650  2008-05-07 09:31  登录窗口\MessageManage\ChangePassword.Designer.cs

     文件       5814  2008-05-07 09:31  登录窗口\MessageManage\ChangePassword.resx

     文件        399  2008-05-07 08:42  登录窗口\MessageManage\DB.cs

     文件       1752  2008-05-07 08:44  登录窗口\MessageManage\Login.cs

     文件       5403  2008-05-06 21:34  登录窗口\MessageManage\Login.Designer.cs

     文件       5814  2008-05-06 21:34  登录窗口\MessageManage\Login.resx

     文件       4485  2008-05-07 08:23  登录窗口\MessageManage\MessageManage.csproj

     文件        510  2008-05-07 09:41  登录窗口\MessageManage\MessageSerch.cs

     文件       2628  2008-05-07 09:38  登录窗口\MessageManage\MessageSerch.Designer.cs

     文件       5814  2008-05-07 09:38  登录窗口\MessageManage\MessageSerch.resx

     文件        874  2008-05-07 09:38  登录窗口\MessageManage\MessageShow.cs

     文件       5042  2008-05-07 08:19  登录窗口\MessageManage\MessageShow.Designer.cs

     文件       5814  2008-05-07 08:19  登录窗口\MessageManage\MessageShow.resx

     文件        180  2008-05-07 09:31  登录窗口\MessageManage\obj\Debug\MessageManage.ChangePassword.resources

     文件       1038  2008-05-07 09:38  登录窗口\MessageManage\obj\Debug\MessageManage.csproj.GenerateResource.Cache

     文件      28672  2008-05-07 09:41  登录窗口\MessageManage\obj\Debug\MessageManage.exe

     文件        180  2008-05-06 21:34  登录窗口\MessageManage\obj\Debug\MessageManage.Login.resources

     文件        180  2008-05-07 09:38  登录窗口\MessageManage\obj\Debug\MessageManage.MessageSerch.resources

     文件        180  2008-05-07 08:19  登录窗口\MessageManage\obj\Debug\MessageManage.MessageShow.resources

     文件      42496  2008-05-07 09:41  登录窗口\MessageManage\obj\Debug\MessageManage.pdb

     文件        180  2008-05-06 21:08  登录窗口\MessageManage\obj\Debug\MessageManage.Properties.Resources.resources

     文件        455  2008-05-29 21:29  登录窗口\MessageManage\obj\MessageManage.csproj.FileList.txt

     文件       2062  2008-05-07 09:21  登录窗口\MessageManage\Operate.cs

     文件        472  2008-05-06 21:08  登录窗口\MessageManage\Program.cs

     文件       1198  2008-05-06 20:53  登录窗口\MessageManage\Properties\AssemblyInfo.cs

     文件       2880  2008-05-06 20:53  登录窗口\MessageManage\Properties\Resources.Designer.cs

............此处省略17个文件信息