/// /// 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();
}
}
