这篇文章主要介绍了asp.net 备份和恢复数据库的方法示例,需要的朋友可以参考下

代码如下:

/**********************************************************************************

*

* 功能说明:备份和恢复SQL Server数据库

* 作者: 刘功勋;

* 版本:V0.1(C#2.0);时间:2007-1-1

* 当使用SQL Server时,请引用 COM组件中的,SQLDMO.dll组件

* 当使用Access中,请浏览添加引用以下两个dll

* 引用C:Program FilesCommon FilesSystemadomsadox.dll,该DLL包含ADOX命名空间

* 引用C:Program FilesCommon FilesSystemadomsjro.dll,该DLL包含JRO命名空间

* *******************************************************************************/

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.IO;

using ADOX;//该命名空间包含创建ACCESS的类(方法)--解决方案 ==> 引用 ==> 添加引用 ==> 游览找到.dll

using JRO;//该命名空间包含压缩ACCESS的类(方法)

namespace EC

{

/// <summary>

/// 数据库恢复和备份

/// </summary>

public class SqlBackObject

{

public SqlBackObject()

{

//

// TODO: 在此处添加构造函数逻辑

//

}

#region SQL数据库备份

/// <summary>

/// SQL数据库备份

/// </summary>

/// <param name="ServerIP">SQL服务器IP或(Localhost)</param>

/// <param name="LoginName">数据库登录名</param>

/// <param name="LoginPass">数据库登录密码</param>

/// <param name="DBName">数据库名</param>

/// <param name="BackPath">备份到的路径</param>

public static void SQLBACK(string ServerIP,string LoginName,string LoginPass,string DBName,string BackPath)

{

SQLDMO.Backup oBackup = new SQLDMO.BackupClass();

SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();

try

{

oSQLServer.LoginSecure = false;

oSQLServer.Connect(ServerIP, LoginName, LoginPass);

oBackup.Database = DBName;

oBackup.Files = BackPath;

oBackup.BackupSetName = DBName;

oBackup.BackupSetDescription = "数据库备份";

oBackup.Initialize = true;

oBackup.SQLBackup(oSQLServer);

}

catch (Exception e)

{

throw new Exception(e.ToString());

}

finally

{

oSQLServer.DisConnect();

}

}

#endregion

#region SQL恢复数据库

/// <summary>

/// SQL恢复数据库

/// </summary>

/// <param name="ServerIP">SQL服务器IP或(Localhost)</param>

/// <param name="LoginName">数据库登录名</param>

/// <param name="LoginPass">数据库登录密码</param>

/// <param name="DBName">要还原的数据库名</param>

/// <param name="BackPath">数据库备份的路径</param>

public static void SQLDbRestore(string ServerIP,string LoginName,string LoginPass,string DBName,string BackPath)

{

SQLDMO.Restore orestore = new SQLDMO.RestoreClass();

SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();

try

{

oSQLServer.LoginSecure = false;

oSQLServer.Connect(ServerIP, LoginName, LoginPass);

orestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;

orestore.Database = DBName;

orestore.Files = BackPath;

orestore.FileNumber = 1;

orestore.ReplaceDatabase = true;

orestore.SQLRestore(oSQLServer);

}

catch (Exception e)

{

throw new Exception(e.ToString());

}

finally

{

oSQLServer.DisConnect();

}

}

#endregion

#region 根据指定的文件名称创建Access数据库

/// <summary>

/// 根据指定的文件名称创建数据

/// </summary>

/// <param name="DBPath">绝对路径+文件名称</param>

public static void CreateAccess(string DBPath)

{

if (File.Exists(DBPath))//检查数据库是否已存在

{

throw new Exception("目标数据库已存在,无法创建");

}

DBPath = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+DBPath;

//创建一个CatalogClass对象实例

ADOX.CatalogClass cat = new ADOX.CatalogClass();

//使用CatalogClass对象的Create方法创建ACCESS数据库

cat.Create(DBPath);

}

#endregion

#region 压缩Access数据库

/// <summary>

/// 压缩Access数据库

/// </summary>

/// <param name="DBPath">数据库绝对路径</param>

public static void CompactAccess(string DBPath)

{

if (!File.Exists(DBPath))

{

throw new Exception("目标数据库不存在,无法压缩");

}

//声明临时数据库名称

string temp = DateTime.Now.Year.ToString();

temp += DateTime.Now.Month.ToString();

temp += DateTime.Now.Day.ToString();

temp += DateTime.Now.Hour.ToString();

temp += DateTime.Now.Minute.ToString();

temp += DateTime.Now.Second.ToString() + ".bak";

temp = DBPath.Substring(0, DBPath.LastIndexOf("") + 1) + temp;

//定义临时数据库的连接字符串

string temp2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+temp;

//定义目标数据库的连接字符串

string DBPath2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+DBPath;

//创建一个JetEngineClass对象的实例

JRO.JetEngineClass jt = new JRO.JetEngineClass();

//使用JetEngineClass对象的CompactDatabase方法压缩修复数据库

jt.CompactDatabase(DBPath2, temp2);

//拷贝临时数据库到目标数据库(覆盖)

File.Copy(temp, DBPath, true);

//最后删除临时数据库

File.Delete(temp);

}

#endregion

#region 备份Access数据库

/// <summary>

/// 备份Access数据库

/// </summary>

/// <param name="srcPath">要备份的数据库绝对路径</param>

/// <param name="aimPath">备份到的数据库绝对路径</param>

/// <returns></returns>

public static void Backup(string srcPath,string aimPath)

{

if (!File.Exists(srcPath))

{

throw new Exception("源数据库不存在,无法备份");

}

try

{

File.Copy(srcPath,aimPath,true);

}

catch(IOException ixp)

{

throw new Exception(ixp.ToString());

}

}

#endregion

#region 还原Access数据库

/// <summary>

/// 还原Access数据库

/// </summary>

/// <param name="bakPath">备份的数据库绝对路径</param>

/// <param name="dbPath">要还原的数据库绝对路径</param>

public static void RecoverAccess(string bakPath,string dbPath)

{

if (!File.Exists(bakPath))

{

throw new Exception("备份数据库不存在,无法还原");

}

try

{

File.Copy(bakPath, dbPath, true);

}

catch (IOException ixp)

{

throw new Exception(ixp.ToString());

}

}

#endregion

}

}

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