1/// <summary>  
 2       /// 备份配置文件config.xml中数据库  
 3       /// </summary>  
 4       /// <param name="backupFolder">备份文件路径</param>  
 5       /// <returns></returns>  
 6       public static bool DataBackupConfigDB(string backupFolder)  
 7       {  
 8           //获取配置文件中sql数据库名  
 9           string dbName = "SqlDB";  
10           string name = dbName + DateTime.Now.ToString("yyyyMMddHHmmss");  
11           string procname;  
12           string sql;  
13           //创建连接对象  
14           SqlConnection conn = new SqlConnection(GetConnStr());  
15           conn.Open();        //打开数据库连接  
16           //删除逻辑备份设备，但不会删掉备份的数据库文件  
17           procname = "sp_dropdevice";  
18           SqlCommand sqlcmd1 = new SqlCommand(procname, conn);  
19           sqlcmd1.CommandType = CommandType.StoredProcedure;  
20           SqlParameter sqlpar = new SqlParameter();  
21           sqlpar = sqlcmd1.Parameters.Add("@logicalname", SqlDbType.VarChar, 20);  
22           sqlpar.Direction = ParameterDirection.Input;  
23           sqlpar.Value = dbName;  
24           try        //如果逻辑设备不存在，略去错误  
25           {  
26               sqlcmd1.ExecuteNonQuery();  
27           }  
28           catch  
29           {  
30               MessageBox.Show("错误的备份文件目录");  
31           }  
32           //创建逻辑备份设备  
33           procname = "sp_addumpdevice";  
34           SqlCommand sqlcmd2 = new SqlCommand(procname, conn);  
35           sqlcmd2.CommandType = CommandType.StoredProcedure;  
36           sqlpar = sqlcmd2.Parameters.Add("@devtype", SqlDbType.VarChar, 20);  
37           sqlpar.Direction = ParameterDirection.Input;  
38           sqlpar.Value = "disk";  
39           sqlpar = sqlcmd2.Parameters.Add("@logicalname", SqlDbType.VarChar, 20);//逻辑设备名  
40           sqlpar.Direction = ParameterDirection.Input;  
41           sqlpar.Value = dbName;  
42           sqlpar = sqlcmd2.Parameters.Add("@physicalname", SqlDbType.NVarChar, 260);//物理设备名  
43           sqlpar.Direction = ParameterDirection.Input;  
44           sqlpar.Value = backupFolder + name + ".bak";  
45           try  
46           {  
47               int i = sqlcmd2.ExecuteNonQuery();  
48           }  
49           catch (Exception err)  
50           {  
51               string str = err.Message;  
52           }  
53           //备份数据库到指定的数据库文件(完全备份)  
54           sql = "BACKUP DATABASE " + dbName + " TO " + dbName + " WITH INIT";  
55           SqlCommand sqlcmd3 = new SqlCommand(sql, conn);  
56           sqlcmd3.CommandType = CommandType.Text;  
57           try  
58           {  
59               sqlcmd3.ExecuteNonQuery();  
60           }  
61           catch (Exception err)  
62           {  
63               string str = err.Message;  
64               conn.Close();  
65               return false;  
66           }  
67           conn.Close();//关闭数据库连接  
68           return true;  
69       }  

 1 /// <summary>  
 2  /// 还原数据库文件  
 3  /// </summary>  
 4  /// <param name="dbFile">数据库备份文件（含路径）</param>  
 5  /// <returns></returns>  
 6  public static bool DataRestoreConfigDB(string dbFile)  
 7 {  
 8     //sql数据库名  
 9     string dbName = "SqlDB";  
10     //创建连接对象  
11     SqlConnection conn = new SqlConnection(GetConnStr());  
12     //还原指定的数据库文件  
13     string sql =string.Format("use master ;declare @s varchar(8000);select @s=isnull(@s,'')+' kill '+rtrim(spID) from master..sysprocesses where dbid=db_id('{0}');select @s;exec(@s) ;RESTORE DATABASE {1} FROM DISK = N'{2}' with replace",dbName,dbName,dbFile);  
14     SqlCommand sqlcmd = new SqlCommand(sql, conn);  
15     sqlcmd.CommandType = CommandType.Text;  
16     conn.Open();  
17     try  
18     {  
19         sqlcmd.ExecuteNonQuery();  
20     }  
21     catch (Exception err)  
22     {  
23         string str = err.Message;  
24         conn.Close();  
25         return false;  
26     }  
27     conn.Close();//关闭数据库连接  
28     return true;  
29 }