filestream

问题 I have huge external files with the "ANSI" and "UCS-2 Little Endian" encoding formats. Now I want to change the file encoding format into UTF-8 using Visual Basic 6.0. I don't want to modify the original file; I just want to change the encoding format alone. I have searched on the web; but can't understand the VB code, and have no idea how to do it. I would also like to be able to read lines one at a time from UTF-8 encoded files. 回答1: NOTE. This answer has been extensively expanded to fit in

问题 I have huge external files with the "ANSI" and "UCS-2 Little Endian" encoding formats. Now I want to change the file encoding format into UTF-8 using Visual Basic 6.0. I don't want to modify the original file; I just want to change the encoding format alone. I have searched on the web; but can't understand the VB code, and have no idea how to do it. I would also like to be able to read lines one at a time from UTF-8 encoded files. 回答1: NOTE. This answer has been extensively expanded to fit in

问题 I know that this must be incredibly easy - It's unbelievable how long I have searched for an answer to this question based on how simple it is in VB6. I simply want to extract an Icon from an EXE File using Icon.ExtractAssociatedIcon, and then save this icon file to my hard drive. So, here is what I have, and I will also show you what I have tried so you don't think I'm being lazy. OpenFileDialog ofd = new OpenFileDialog(); ofd.ShowDialog(); string s = Environment.GetFolderPath(Environment

问题 I cannot get the Full-Text search to work on PDF files I am loading into my SQL Db via FileStream. Version: SQL Server 2008 R2 (Developer Edition - doing proof of concept) OS: Windows 7 Steps I have taken. Installed the Adobe iFilter Made sure SQL Server full Text Daemon service is running Added the environment path to the Adobe PDF Filter bin directory Ran the below scripts to setup the new iFilter and make sure it is active EXEC sp_fulltext_service @action='load_os_resources', @value=1; --

问题 I have an angular2 project with an ASP.Net Web API. I have code to retrieve a file path from my database which goes to a document on my server. I then want to display this document in the browser in a new tab. Does anybody have any suggestions how to do this? I am happy to retrieve the file in either Angular2 (Typescript) or in my API and stream it down. This is my attempt of retrieving it in my API but i cannot work out how to receive it in Angular2 and display it properly: public

问题 I am wondering if it's possible to get a readonly FileStream to a locked file? I now get an exception when I try to read the locked file. using (FileStream stream = new FileStream("path", FileMode.Open)) Thanks! 回答1: You should try another constructor. They are documented at MSDN. This one looks like a bet: FileStream Constructor (String, FileMode, FileAccess, FileShare) MSDN Link FileAccess A constant that determines how the file can be accessed by the FileStream object. This gets the

问题 I've searched all over but can't find an answer to this question. I understand that FileAccess deals with file access on the machine and FileShare deals with the share, but I can't find an explanation of how exactly it comes together and how they impact one another. For example, if I have using ( FileStream fs = new FileStream( pathName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite) ) does that mean that users on the machine can only read the file whilst users remotely accessing the

问题 I need a way to read a Excel file from a stream. It doesn't seem to work with the ADO.NET way of doing things. The scenario is that a user uploads a file through a FileUpload and i need to read some values from the file and import to a database. For several reasons I can't save the file to disk, and there is no reason to do so either. So, anyone know of a way to read a Excel file from a FileUpload stream? 回答1: It seems i found a soultion to the problem myself. http://www.codeplex.com

问题 Please explain what Byte streams and Character streams are. What exactly do these mean? Is a Microsoft Word document Byte oriented or Character oriented? Thanks 回答1: A stream is a way of sequentially accessing a file. A byte stream access the file byte by byte. A byte stream is suitable for any kind of file, however not quite appropriate for text files. For example, if the file is using a unicode encoding and a character is represented with two bytes, the byte stream will treat these

问题 I'm using Filestream for read big file (> 500 MB) and I get the OutOfMemoryException. Any solutions about it. My Code is: using (var fs3 = new FileStream(filePath2, FileMode.Open, FileAccess.Read)) { byte[] b2 = ReadFully(fs3, 1024); } public static byte[] ReadFully(Stream stream, int initialLength) { // If we've been passed an unhelpful initial length, just // use 32K. if (initialLength < 1) { initialLength = 32768; } byte[] buffer = new byte[initialLength]; int read = 0; int chunk; while (