sqlsever2008数据库的备份与还原

 本文数据库的名称为ProjectControl
  public static SqlConnection conn = new SqlConnection("server=(local);uid=sa;pwd=000;database=ProjectControl");
//备份 public bool BackUpDataBase(string databasefile) { if (!File.Exists(databasefile)) { } //还原的数据库MyDataBase string sql = "BACKUP DATABASE " + "ProjectControl" + " 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; MessageBox.Show(str); conn.Close(); return false; } MessageBox.Show("备份成功"); conn.Close();//关闭数据库连接 return true; } //还原 public string RestoreDatabase(string backfile) { ///杀死原来所有的数据库连接进程 SqlConnection conn = new SqlConnection(); conn.ConnectionString = "Data Source=.;Initial Catalog=master;User ID=sa;pwd =000"; conn.Open(); string sql = "SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='" + "ProjectControl" + "'"; 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!"); } //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=.;Initial Catalog=master;User ID=sa;pwd =tc0001"; string database = "ProjectControl"; 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!"); Application.Exit(); } catch (SqlException ee) { //throw(ee); //MessageBox.Show("还原失败"); MessageBox.Show(ee.ToString()); } finally { con.Close(); } return "成功与否字符串"; }

 

posted @ 2014-11-24 11:17  zzlp  阅读(203)  评论(0编辑  收藏  举报