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

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

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

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

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

mysqldump –all-databases > allbackupfile.sql

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

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

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

/// <summary>
/// 备份数据库到特定目录
/// </summary>
/// <param name="binfolderpath">Bin文件夹目录,用于得到mysqldump.exe文件</param>
/// <param name="server">服务器</param>
/// <param name="user">用户名</param>
/// <param name="pass">密码</param>
/// <param name="db">要备份的数据库名</param>
/// <param name="backupfile">备份到什么文件</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>
/// 恢复指定数据库到指定文件
/// </summary>
/// <param name="binfolderpath">Bin文件夹目录,用于得到mysqldump.exe文件</param>
/// <param name="server">服务器</param>
/// <param name="user">用户名</param>
/// <param name="pass">密码</param>
/// <param name="db">要备份的数据库名</param>
/// <param name="backupfile">要恢复的SQL文件</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;
}