filestream

Say I want to define a TempFileStream class that creates a temporary file using Path.GetTempFileName() method. A temporary file must be deleted when TempFileStream's object is no longer needed, e.g. closed or disposed: class TempFileStream: FileStream { string m_TempFileName = Path.GetTempFileName(); public TempFileStream(FileMode fileMode): base(m_TempFileName,fileMode) {} /// ... public ovverride Dispose(bool disposing) { /// ??? } } How should I implement this simply and safely? Try this one instead: public class TempFileStream : FileStream { public TempFileStream() : base(Path

Is it possible to cache a binary file in .NET and do normal file operations on cached file? The way to do this is to read the entire contents from the FileStream into a MemoryStream object, and then use this object for I/O later on. Both types inherit from Stream , so the usage will be effectively identical. Here's an example: private MemoryStream cachedStream; public void CacheFile(string fileName) { cachedStream = new MemoryStream(File.ReadAllBytes(fileName)); } So just call the CacheFile method once when you want to cache the given file, and then anywhere else in code use cachedStream for

I have a WCF service, from which users can request large datafiles (stored in an SQL database with FileStream enabled). These files should be streamed, and not loaded into memory before sending them off. So I have the following method that should return a stream, which is called by the WCF service, so that it can return the Stream to the client. public static Stream GetData(string tableName, string columnName, string primaryKeyName, Guid primaryKey) { string sqlQuery = String.Format( "SELECT {0}.PathName(), GET_FILESTREAM_TRANSACTION_CONTEXT() FROM {1} WHERE {2} = @primaryKey", columnName,

I want to return some files in a HttpResponse and I'm using the following function. The file that is returned always has a filesize of 1kb and I do not know why. I can open the file, but it seems that it is not served correctly. Thus I wanted to know how one can return files with django/python over a HttpResponse. @login_required def serve_upload_files(request, file_url): import os.path import mimetypes mimetypes.init() try: file_path = settings.UPLOAD_LOCATION + '/' + file_url fsock = open(file_path,"r") #file = fsock.read() #fsock = open(file_path,"r").read() file_name = os.path.basename

When i want to store a file in a filestream column, i always need to read the whole binary into the memory: using (MemoryStream memoryStream = new MemoryStream()) { sourceStream.CopyTo(memoryStream); binaryStore.Content = memoryStream.ToArray(); //Content = filestream column } is there a way with the entity framework, to put the stream directly? Because, if i want to upload a large file, i get a OutOfMemoryException. Didn't see any update about FILESTREAM support in EF. ( Mentioned before as partial support with .net 3.5 sp1 release here ). I suppose entity framework is accessing FILESTREAM

In the past I've always used a FileStream object to write or rewrite an entire file after which I would immediately close the stream. However, now I'm working on a program in which I want to keep a FileStream open in order to allow the user to retain access to the file while they are working in between saves. ( See my previous question ). I'm using XmlSerializer to serialize my classes to a from and XML file. But now I'm keeping the FileStream open to be used to save (reserialized) my class instance later. Are there any special considerations I need to make if I'm reusing the same File Stream