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這篇文章主要介紹了asp.net 備份和恢復數據庫的方法示例,需要的朋友可以參考下

代碼如下:

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

*

* 功能說明:備份和恢復SQL Server數據庫

* 作者: 劉功勛;

* 版本:V0.1(C#2.0);時間:2007-1-1

* 當使用SQL Server時,請引用 COM組件中的,SQLDMO.dll組件

* 當使用Access中,請瀏覽添加引用以下兩個dll

* 引用C:Program FilesCommon FilesSystemadomsadox.dll,該DLL包含ADOX命名空間

* 引用C:Program FilesCommon FilesSystemadomsjro.dll,該DLL包含JRO命名空間

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

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;//該命名空間包含創建ACCESS的類(方法)--解決方案 ==> 引用 ==> 添加引用 ==> 游覽找到.dll

using JRO;//該命名空間包含壓縮ACCESS的類(方法)

namespace EC

{

/// <summary>

/// 數據庫恢復和備份

/// </summary>

public class SqlBackObject

{

public SqlBackObject()

{

//

// TODO: 在此處添加構造函數邏輯

//

}

#region SQL數據庫備份

/// <summary>

/// SQL數據庫備份

/// </summary>

/// <param name="ServerIP">SQL服務器IP或(Localhost)</param>

/// <param name="LoginName">數據庫登錄名</param>

/// <param name="LoginPass">數據庫登錄密碼</param>

/// <param name="DBName">數據庫名</param>

/// <param name="BackPath">備份到的路徑</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 = "數據庫備份";

oBackup.Initialize = true;

oBackup.SQLBackup(oSQLServer);

}

catch (Exception e)

{

throw new Exception(e.ToString());

}

finally

{

oSQLServer.DisConnect();

}

}

#endregion

#region SQL恢復數據庫

/// <summary>

/// SQL恢復數據庫

/// </summary>

/// <param name="ServerIP">SQL服務器IP或(Localhost)</param>

/// <param name="LoginName">數據庫登錄名</param>

/// <param name="LoginPass">數據庫登錄密碼</param>

/// <param name="DBName">要還原的數據庫名</param>

/// <param name="BackPath">數據庫備份的路徑</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 根據指定的文件名稱創建Access數據庫

/// <summary>

/// 根據指定的文件名稱創建數據

/// </summary>

/// <param name="DBPath">絕對路徑+文件名稱</param>

public static void CreateAccess(string DBPath)

{

if (File.Exists(DBPath))//檢查數據庫是否已存在

{

throw new Exception("目標數據庫已存在,無法創建");

}

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

//創建一個CatalogClass對象實例

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

//使用CatalogClass對象的Create方法創建ACCESS數據庫

cat.Create(DBPath);

}

#endregion

#region 壓縮Access數據庫

/// <summary>

/// 壓縮Access數據庫

/// </summary>

/// <param name="DBPath">數據庫絕對路徑</param>

public static void CompactAccess(string DBPath)

{

if (!File.Exists(DBPath))

{

throw new Exception("目標數據庫不存在,無法壓縮");

}

//聲明臨時數據庫名稱

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;

//定義臨時數據庫的連接字符串

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

//定義目標數據庫的連接字符串

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

//創建一個JetEngineClass對象的實例

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

//使用JetEngineClass對象的CompactDatabase方法壓縮修復數據庫

jt.CompactDatabase(DBPath2, temp2);

//拷貝臨時數據庫到目標數據庫(覆蓋)

File.Copy(temp, DBPath, true);

//最后刪除臨時數據庫

File.Delete(temp);

}

#endregion

#region 備份Access數據庫

/// <summary>

/// 備份Access數據庫

/// </summary>

/// <param name="srcPath">要備份的數據庫絕對路徑</param>

/// <param name="aimPath">備份到的數據庫絕對路徑</param>

/// <returns></returns>

public static void Backup(string srcPath,string aimPath)

{

if (!File.Exists(srcPath))

{

throw new Exception("源數據庫不存在,無法備份");

}

try

{

File.Copy(srcPath,aimPath,true);

}

catch(IOException ixp)

{

throw new Exception(ixp.ToString());

}

}

#endregion

#region 還原Access數據庫

/// <summary>

/// 還原Access數據庫

/// </summary>

/// <param name="bakPath">備份的數據庫絕對路徑</param>

/// <param name="dbPath">要還原的數據庫絕對路徑</param>

public static void RecoverAccess(string bakPath,string dbPath)

{

if (!File.Exists(bakPath))

{

throw new Exception("備份數據庫不存在,無法還原");

}

try

{

File.Copy(bakPath, dbPath, true);

}

catch (IOException ixp)

{

throw new Exception(ixp.ToString());

}

}

#endregion

}

}

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