MSSQL、C# 、Winform、ASP.NET - 数据库备份与还原模块

数据库备份还原类:

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



//应用相应的命名空间

using System.Windows.Forms;

using System.Collections;

using System.IO;

using System.Data;

using System.Data.SqlClient;



namespace canyinxt.Command

{

    public static class BacupDatabase

    {

        static string connectionString = "Data Source=(local);Initial Catalog=master;integrated security = true";

        static SqlConnection conn = new SqlConnection(connectionString);



        #region 备份指定的数据库文件

        /// <summary>

        /// 备份指定的数据库文件

        /// </summary>

        /// <param name="DBName">备份名称要与数据库中的数据库名称相同</param>

        /// <param name="databasename">要还原的数据库(包含要备份的文件名)</param>

        /// <returns></returns>

        public static bool BackUpDataBase(string DBName, string databasefile)

        {

            if (!File.Exists(databasefile))

            {



            }

            //还原的数据库MyDataBase

            string sql = "BACKUP DATABASE " + "" + DBName + "" + " TO DISK = '" + databasefile + ".bak' ";

            conn.Open();

            SqlCommand comm = new SqlCommand(sql, conn);

            comm.CommandType = CommandType.Text;

            try

            {

                comm.ExecuteNonQuery();

            }

            catch (Exception err)

            {

                string str = err.Message;

                conn.Close();



                return false;

            }



            conn.Close();//关闭数据库连接

            return true;

        } 

        #endregion



        //以下是还原数据库,稍微麻烦些,要关闭所有与当前数据库相连的连接

        #region 还原数据库

        /// <summary>

        /// 还原数据库

        /// </summary>

        /// <param name="DBName">要还原数据库名称(此名称要和备份时候的相同)</param>

        /// <param name="backfile">数据库文件路径(加名称)</param>

        /// <returns></returns>

        public static bool RestoreDatabase(string DBName, string backfile)

        {

            ///杀死原来所有的数据库连接进程

            SqlConnection conn = new SqlConnection();

            conn.ConnectionString = "Data Source=(local);Initial Catalog=master;integrated security = true";

            conn.Open();

            string sql = "SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='" + "" + DBName + "" + "'";

            SqlCommand cmd1 = new SqlCommand(sql, conn);

            SqlDataReader dr;

            ArrayList list = new ArrayList();

            try

            {

                dr = cmd1.ExecuteReader();

                while (dr.Read())

                {

                    list.Add(dr.GetInt16(0));

                }

                dr.Close();

            }

            catch (SqlException eee)

            {

                MessageBox.Show(eee.ToString());

            }

            finally

            {

                conn.Close();

            }

            //MessageBox.Show(list.Count.ToString());

            for (int i = 0; i < list.Count; i++)

            {

                conn.Open();

                cmd1 = new SqlCommand(string.Format("KILL {0}", list[i].ToString()), conn);

                cmd1.ExecuteNonQuery();

                conn.Close();

                // MessageBox.Show("系统已经清除的数据库线程: " + list[i].ToString() + "\r\n正在还原数据库!");

            }

            MessageBox.Show("系统已经清除的数据库线程: " + list.Count.ToString() + "\r\n正在还原数据库!");

            //这里一定要是master数据库,而不能是要还原的数据库,因为这样便变成了有其它进程

            //占用了数据库。

            string constr = @"Data Source=(local);Initial Catalog=master;integrated security = true";

            string database = DBName;

            string path = backfile;

            string BACKUP = String.Format("RESTORE DATABASE {0} FROM DISK = '{1}' WITH REPLACE", database, path);

            SqlConnection con = new SqlConnection(constr);

            SqlCommand cmd = new SqlCommand(BACKUP, con);

            con.Open();

            try

            {

                cmd.ExecuteNonQuery();

                MessageBox.Show("还原成功,点击退出系统,请重新登录!");

                Application.Exit();

                return true;

            }

            catch (SqlException ee)

            {

                //throw(ee);



                //MessageBox.Show("还原失败");



                MessageBox.Show(ee.ToString() + "还原失败!", "还原失败!");

                return false;



            }

            finally

            {

                con.Close();

            }

        } 

        #endregion

    }

}

 

 

 

 

备份方法的使用:

调用 Command 文件夹下的 BacupDatabase 类下的 BackUpDataBase(备份方法):

Command.BacupDatabase.BackUpDataBase("DB_CYMS", BackupPath + @"\DB_CYMS")

 

 

还原方法的使用:

调用 Command 文件夹下的 BacupDatabase 类下的 RestoreDatabase(还原方法):

Command.BacupDatabase.RestoreDatabase("DB_CYMS", RestoreDB)

 

 

 

参考:http://www.cnblogs.com/enjoyprogram/p/3177693.html

 

 

模块下载(直接能使用):http://pan.baidu.com/s/1nt9pIml

 

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