/// 对数据库的备份和恢复操作，Sql语句实现

/// 实现备份或恢复的Sql语句

/// 该操作是否为备份操作，是为true否，为false

private void BakReductSql(string cmdText,bool isBak,string dbname)

{

string conString=DataBase.dbConnection.sqlNoDBNameConnect();

SqlConnection conn3 = new SqlConnection(conString);

SqlCommand cmdBakRst = new SqlCommand();

try

{

if(conn3.State==ConnectionState.Closed)

conn3.Open();

cmdBakRst.Connection = conn3;

cmdBakRst.CommandType = CommandType.Text;

if (!isBak) //如果是恢复操作

{

string setOffline = "Alter database "+dbname+" Set Offline With rollback immediate ";

string setOnline = " Alter database " + dbname + " Set Online With Rollback immediate";

cmdBakRst.CommandText = setOffline + cmdText + setOnline ;

}

else

{

cmdBakRst.CommandText = cmdText;

}

cmdBakRst.ExecuteNonQuery();

if (!isBak)

{

MessageBox.Show("数据成功恢复为所选文档的状态!", "系统消息");

}

else

{

MessageBox.Show("恭喜，你已经成功备份当前数据!", "系统消息");

}

}

catch (SqlException sexc)

{

MessageBox.Show("失败，可能是对数据库操作失败，原因：" + sexc, "数据库错误消息");

}

catch (Exception ex)

{

MessageBox.Show("对不起，操作失败，可能原因：" + ex, "系统消息");

}

finally

{

cmdBakRst.Dispose();

conn3.Close();

}

}

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