ASP.NET中使用代码来进行备份和还原数据库

 SQL代码：

 

-- 备份数据库

backup database db_CSManage to disk='c:\backup.bak'

-- 还原数据库，必须先备份该数据库的日志文件到原先的备份文件中

backup log db_CSManage to disk='c:\backup.bak'

restore database db_CSManage from disk='c:\backup.bak'

 

 

其中db_CSManage是数据库名称，disk后的路径即是备份文件存储的路径。
知道了SQL语句，那么在.NET代码中就容易多了，备份的.NET代码如下：

C#代码-备份： 

 

try

{

	if (txtPath.Text != "" && txtName122.Text != "")

	{

		getSqlConnection geCon = new getSqlConnection();

		SqlConnection con = geCon.GetCon();



		string strBacl = "backup database db_CSManage to disk='" + txtPath.Text.Trim() + "\\" + txtName.Text.Trim() + ".bak'";

		SqlCommand Cmd = new SqlCommand(strBacl, con);

		if (Cmd.ExecuteNonQuery() != 0)

		{

			MessageBox.Show("数据备份成功！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);

			this.Close();

		}

		else

		{

			MessageBox.Show("数据备份失败！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);

		}



	}

	else

	{

		MessageBox.Show("请填写备份的正确位置及文件名！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);



	}// end 

}

catch (Exception ee)

{

	MessageBox.Show(ee.Message.ToString());

}

 

 

 

以下是还原数据库的代码，在示例中发现开头得先删除与该数据库相关的进程，然后在还原之前得先把数据库日志备份到开始的备份文件中，然后才还原备份文件，要不然会出错的，代码如下：  

C#代码-还原： 

 

if (textPaht.Text != "")

{

	getSqlConnection geCon = new getSqlConnection();

	SqlConnection con = geCon.GetCon();

	if (con.State == ConnectionState.Open)

	{

		con.Close();

	}

	string DateStr = "Data Source=niunan\\sqlexpress;Database=master;User id=sa;PWD=123456";

	SqlConnection conn = new SqlConnection(DateStr);

	conn.Open();



	//-------------------杀掉所有连接 db_CSManage 数据库的进程--------------

	string strSQL = "select spid from master..sysprocesses where dbid=db_id( 'db_CSManage') ";

	SqlDataAdapter Da = new SqlDataAdapter(strSQL, conn);



	DataTable spidTable = new DataTable();

	Da.Fill(spidTable);



	SqlCommand Cmd = new SqlCommand();

	Cmd.CommandType = CommandType.Text;

	Cmd.Connection = conn;



	for (int iRow = 0; iRow <= spidTable.Rows.Count - 1; iRow++)

	{

		Cmd.CommandText = "kill " + spidTable.Rows[iRow][0].ToString();   //强行关闭用户进程 

		Cmd.ExecuteNonQuery();

	}

	conn.Close();

	conn.Dispose();

	//--------------------------------------------------------------------



	SqlConnection sqlcon = new SqlConnection(DateStr);

	sqlcon.Open();

	string sql = "backup log db_CSManage to disk='" + textPaht.Text.Trim() + "' restore database db_CSManage from disk='" + textPaht.Text.Trim() + "'";

	SqlCommand sqlCmd = new SqlCommand(sql, sqlcon);

	sqlCmd.ExecuteNonQuery();

	sqlCmd.Dispose();

	sqlcon.Close();

	sqlcon.Dispose();

	MessageBox.Show("数据还原成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

	MessageBox.Show("为了必免数据丢失，在数据库还原后将关闭整个系统。");

	Application.Exit();

}

else

{

	MessageBox.Show("请选择备份文件！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);

}

 

 

转自：http://niunan.javaeye.com/blog/321062