学习了http://dava.itpub.net/post/2653/279019

   /// <summary>

        /// MrTom

        /// Oracle数据库备份

        /// </summary>

        private void OracleBackUp()

        {

            //创建一个进程实例

            Process p = new Process();

            //生成备份文件的文件名称

            string filename = "E:\\DBData" + System.DateTime.Today.ToString("yyyyMMdd") + ".dmp";

            //导出程序路径

            p.StartInfo.FileName = "D:\\oracle\\product\\10.2.0\\db_1\\BIN\\exp.exe";

            //D:\oracle\product\10.2.0\db_1\bin\imp.exe

            //启用操作系统外壳程序执行

            p.StartInfo.UseShellExecute = true;

            //显示dos窗口执行过程

            p.StartInfo.CreateNoWindow = false;

            //执行参数用户名和密码还有本机配置的Oracle服务名[kdtc/bjdscoal@tns:orcl file=" + filename + ]

            string username = txtUsername.Text.Trim();

            string pwd = txtPwd.Text.Trim();

            string ipAddress = TxtIpAddress.Text.Trim();

            p.StartInfo.Arguments = username + "/" + pwd + "@" + ipAddress + "  file=" + filename; 

            p.Start();
            p.Dispose();
        }



http://blog.csdn.net/happy09li/article/details/6690562

        /// <summary>
        /// run command ang get the result info
        /// </summary>
        /// <param name="command"></param>
        /// <returns></returns>
        public static string RunCmd(string command)
        {
            Process p = new Process();

            p.StartInfo.FileName = "cmd.exe";           //filename
            p.StartInfo.Arguments = "/c " + command;    //argument
            p.StartInfo.UseShellExecute = false;        //close Shell
            p.StartInfo.RedirectStandardInput = true;   //redirect input
            p.StartInfo.RedirectStandardOutput = true;  //redirect output
            p.StartInfo.RedirectStandardError = true;   //redirect error
            p.StartInfo.CreateNoWindow = true;          //no window

            p.Start();   //start

            //p.StandardInput.WriteLine(command);       //input the command
            //p.StandardInput.WriteLine("exit");        //Exit or will cause collapse

            return p.StandardOutput.ReadToEnd();        //return the result

        }