C# implements MySQL command line backup and recovery

There are many tools available for backing up MySQL databases. In the past two days, I wrote a small tool that uses C# to call MYSQL's mysqldump command to complete the backup and recovery of MySQL databases.

Let's first talk about how to use the mysqldump command to back up the MySQL database.

mysqldump -hhostname -uusername -ppassword databasename > backupfile.sql

Compress and back up the MySQL database directly

mysqldump -hhostname -uusername -ppassword databasename | gzip > backupfile.sql.gz

Back up a table(s) in the MySQL database

mysqldump -hhostname -uusername -ppassword databasename specific_table1 specific_table2 > backupfile.sql

Back up multiple MySQL databases simultaneously

mysqldump -hhostname -uusername -ppassword –databases databasename1 databasename2 databasename3 > multibackupfile.sql

Back up only the database structure

mysqldump –no-data –databases databasename1 databasename2 databasename3 > structurebackupfile.sql

Back up all databases on the server

mysqldump –all-databases > allbackupfile.sql

Command to restore MySQL database

mysql -hhostname -uusername -ppassword databasename < backupfile.sql

Restoring a compressed MySQL database

gunzip < backupfile.sql.gz | mysql -uusername -ppassword databasename

Transfer the database to the new server

mysqldump -uusername -ppassword databasename | mysql –host=*.*.*.* -C databasename

Using C# to operate MYSQL backup and recovery is mainly achieved by using C# to execute external programs

Below is some C# source code

/// <summary>
/// Back up the database to a specific directory/// </summary>
/// <param name="binfolderpath">Bin folder directory, used to get the mysqldump.exe file</param>
/// <param name="server">Server</param>
/// <param name="user">User name</param>
/// <param name="pass">Password</param>
/// <param name="db">Database name to be backed up</param>
/// <param name="backupfile">What file to back up to</param>
/// <returns></returns>
public static bool BackupDB(string binfolderpath, string server, string character, string user, string pass, string db, string backupfile)
{
string command = string.Format("mysqldump.exe --quick --host=\"{0}\" --default-character-set=\"{1}\" --lock-tables --verbose --force --port=3306 --user=\"{2}\" --password=\"{3}\" \"{4}\" -r \"{5}\"",server, character.Trim().ToLower(), user, pass, db, backupfile);
  StartCmd(binfolderpath + @"\", command);
  if (File.Exists(backupfile))
  {
    return true;
  }
  else
  {
    return false;
  }
}
/// <summary>
/// Restore the specified database to the specified file/// </summary>
/// <param name="binfolderpath">Bin folder directory, used to get the mysqldump.exe file</param>
/// <param name="server">Server</param>
/// <param name="user">User name</param>
/// <param name="pass">Password</param>
/// <param name="db">Database name to be backed up</param>
/// <param name="backupfile">SQL file to be restored</param>
/// <returns></returns>
public static bool RestoreDB(string binfolderpath, string character, string server, string user, string pass, string db, string restorefile)
{
string command = string.Format("mysql.exe --host=\"{0}\" --default-character-set=\"{1}\" --port=3306 --user=\"{2}\" --password=\"{3}\" \"{4}\"<\"{5}\"", server, character.Trim().ToLower(), user, pass, db, restorefile);
   StartCmd(binfolderpath + @"\", command);
   return true;
}

The database backup and recovery function can be implemented with just a few lines of code. The main principle of implementing MySQL command line backup and recovery in C# is to use C# to execute external programs. There are other implementation methods. You can learn more about them.

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