推荐一个文件事物管理 transactional file manager
project descriptiontransactional file manager is a .net api that supports including file system operations such as file copy, move, delete, append, etc. in a transaction. it's an implementation of system.transaction.ienlistmentnotification (works with system.transactions.transactionscope).
this library allows you to wrap file system operations in transactions like this:
// wrap a file copy and a database insert in the same transactiontxfilemanager filemgr = new txfilemanager();using (transactionscope scope1 = new transactionscope()) {// copy a file filemgr.copy(srcfilename, destfilename);// insert a database record dbmgr.executenonquery(insertsql);scope1.complete(); }
current featuressupport the following file operations in transactions:
appendalltext
copy
createdirectory
deletedirectory
deletefile
move
snapshot
writealltext
writeallbytes
this library supports any file system and is not a wrapper over transactional ntfs (see alphafs).
examples// completely unrealistic example showing how various file operations, including operations done // by library/3rd party code, can participate in transactions.ifilemanager filemanager = new txfilemanager();using (transactionscope scope1 = new transactionscope()) { filemanager.writealltext(infilename, xml); // snapshot allows any file operation to be part of our transaction. // all we need to know is the file name. //the statement below tells the txfilemanager to remember the state of this file. // so even though xslcompiledtransform has no knowledge of our txfilemanager, the file it creates (outfilename) // will still be restored to this state in the event of a rollback. filemanager.snapshot(outfilename); xslcompiledtransform xsl = new xslcompiledtransform(true); xsl.load(uri); xsl.transform(infilename, outfilename); // write to database 1. this database op will get committed/rolled back along with the file operations we are doing in this transaction. mydb1.executenonquery(sql1); // write to database 2. the transaction is promoted to a distributed transaction here. mydb2.executenonquery(sql2); // let's delete some files for (string filename in filestodelete) { filemanager.delete(filename); } // just for kicks, let's start a new nested transaction. since we specify requiresnew here, this nested transaction // will be committed/rolled back separately from the main transaction. // note that we can still use the same filemanager instance. it knows how to sort things out correctly. using (transactionscope scope2 = new transactionscope(transactionscopeoptions.requiresnew)) { filemanager.movefile(anotherfile, anotherfiledest); } // move some files for (string filename in filestomove) { filemanager.move(filename, getnewfilename(filename)); } // finally, let's create a few temporary files... // disk space has to be used for something. // the nice thing about filemanager.gettempfilename is that // the temp file will be cleaned up automatically for you when the transactionscope completes. // no more worries about temp files that get left behind. for (int i=0; i<10; i++) { filemanager.writealltext(filemanager.gettempfilename(), "testing 1 2"); } scope1.complete(); // in the event an exception occurs, everything done here will be rolled back including the output xsl file.}
这是一个开源项目。原始项目网站是  事务文件管理器。
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以上就是文件事物管理transactional file manager的实例详解的详细内容。