My problem should be plain and simple to solve, but google is not helping me today.
I need to read/write a configuration file (config.xml) and, as i see so much problems with permissions with special folders, i decided for myDocuments.
Now, from File system (Setup), I added a custom special folder (myDocuments)
added a subfolder (g1OKweb) inside myDocuments
added the file (config.xml) inside g1OKweb
What I expect, reading around, is that during the installation g1OKweb should be created if not existing or older, and the same for config.xml, but it isn't.
Does someone have any clue?
Thanks in advance
Use Directory.CreateDirectory to create the directory before attempting to access the file. This will automatically create all parts of the path that do not yet exist. If the full path already exists, it will do nothing.
When opening the file, use a FileStream constructor overload that allows you to specify FileMode.OpenOrCreate. This will succeed regardless of whether the file already exists or not.
When you have opened the file, check to see if it is empty before parsing it. If it is empty, insert your XML root element first.
Related
When you open an XCode project it can automatically write to the enclosing folder of the respective .xcodeproj file.
In a sandboxed application you can only write to files that are opened, or write to directories that have been opened with NSOpenPanel.
What I'm trying to achieve is the same functionality as XCode ; my app makes a project file (a document much like an .xcodeproj file) that is saved to a user-selected directory, and within that directory other files are created relating to that project file. However, if the file is re-opened after terminating the app, I end up losing permission to write to the enclosing directory.
I see bookmarks are an option but they do not provide the same functionality. If the project file is moved to a new directory it makes no sense to keep writing to the old directory, and I'd have to ask the user for permission to write to the new directory. I don't find this user-friendly. Is there absolutely no way to resolve this problem?
If the project file is moved to a new directory it makes no sense to keep writing to the old directory, and I'd have to ask the user for permission to write to the new directory. I don't find this user-friendly. Is there absolutely no way to resolve this problem?
Unfortunately for you this is Apple's sandbox model and you need to adapt to it. The process you describe is a good way to handle your situation - when you first create a project file ask the user to select the folder to store it and save a bookmark to that folder, when an existing project file is opened check whether you have a saved bookmark for its parent folder and if not put up a dialog explaining the file has been moved and ask the user for permission to use the new parent folder and keep a bookmark to it.
Users are used to these dialogs from apps, the sandbox has been around a long time. You might find keeping a number of saved bookmarks and optimising your collection will improve your users experience. E.g. remember that a bookmark to a folder grants access to all the files and folders within it, and the files/folders within those folders, etc. This means if a user reorganises by moving projects into sub folders may not require you to ask for a new bookmark, and similarly when a new bookmark is acquired any existing ones you have stored to folders contained by the new bookmark's folder are redundant and can be removed from your collection of stored bookmarks.
Not the answer you really wanted, but hope it helps!
I'm trying to copy a file from a local computer to a remote share but I get an exception saying "Can't find the specified file".
My.Computer.FileSystem.CopyFile("C:\filename.jpg", "\\focserver2\consultoria\teste\filename.jpg")
The remote shared folder has full control permissions on "Everyone".
What am I doing wrong? Or it's not possible to copy to network paths using FileSystem.CopyFile ?
Thanks.
João
The issue does not appear to be the destination but the source. I assume that the sample you showed above is NOT the real code and in the real code, you combine a couple values together to define the source. To help prevent issues, get in the habit of using the Path.Combine() method when concatenating strings for a file path. It's a life-saver.
The next most important thing is to learn how to debug your code by setting break-points and seeing what the values of your combined strings are before posting to websites. This is a good one to get you started. http://weblogs.asp.net/scottgu/debugging-tips-with-visual-studio-2010
Most likely the problem is that you are trying to access the root folder of the C:\ drive. This folder is generally locked down by the operating system, and even simple file operations don't work easily there.
Try copying the file from a subfolder e.g.
My.Computer.FileSystem.CopyFile("C:\Temp\filename.jpg", "\\focserver2\consultoria\teste\filename.jpg")
We got a homework in college, to make a Local web-site using MVC and VB, that will read from a Json file (that is places in the App_Data folder) some seed data and populate the database.
The problem is, I'm not sure how to make Json read from the file in App_data, without assigning a full address to it.
What happens, pretty much, is I give it an address:
File.ReadFile("~/App_Data/emails.json") 'Also tried "App_Data/emails.json"
After that, I pass this path (as filename) to a StreamReader:
Using fileRead As New IO.StreamReader(filename)
Json read stuff
And instead of reading this address as the address of the Project ("C:\Users\BlueLight\Desktop\Codes\VBA\NMCAss2\App_Data\emails.json") it throws an Exception, that it
"could not find a part of the path 'C:\Program Files (x86)\Common Files\Microsoft Shared\DevServer\10.0\App_Data\emails.json'." So, it searches in a different place.
Can I redirect this path to my App_Data, without using the full path? Or, maybe there is a problem somewhere in my logic?
Thanks in advance.
Update: I tried reversing "/" with "\" like "App_Data\filename.json" and "'~\App_Data\filename.json" it still didn't work.
Apparently, the best way to fix it is using
System.Web.HttpContext.Current.Server.MapPath("~/App_Data/namemails.json")
Works perfectly.
I'm quite new to this app.config function. Hope someone can show me the road on this.
I have a solution which comprise of 5 projects and one of them just to retrieve the value from the app.config file to be read by other projects. So, in the app.config file, i have my connection string stated inside and i can use it nicely.
After i built the projects, it will convert my app.config file to appname.dll.config file and it can be seen in the bin/Release folder. I copy all these projects bin/release content to another folder to have all those files stay in one place.
My question is, which config file should i change if i want to change the connection string username (for example) WIHOUT building the project and transfer again? I changed the value inside appname.dll.config file but it does not reflect when the program run. It's still taking the old connection string.
Hope someone can help me on this.
Thanks in advance.
Usually the app.config associated with the exe project (command line or GUI) is the one that holds the changes app wide. Check for the appname.exe.config file and make your necessary changes there for connection strings, etc...
[update]
Just thought of something else... if it's a web project you can use the web.config in the main webproject to configure your changes
I'm currently working out the best structure for a document I'm trying to create. The document is basically a core data document that uses sqlite as its store, but uses the Apple provided NSPersistentDocument+FileWrapperSupport to enable file wrapper support.
The document makes heavy use of media, such as images, videos, audio files, etc. with potentially 1000s of files. So what I'm trying to do is create a structure similar to the following:
/myfile.ext/
/myfile.ext/store.sqlite
/myfile.ext/content/
/myfile.ext/content/images/*
/myfile.ext/content/videos/*
/myfile.ext/content/audio/*
Now, first of all I went down the route of creating a temporary directory and placing all of my media in there. Basically creating the paths and file names '/content/images/image1.jpg' as I wanted them to appear in the saved file wrapper, and then upon save I attempted to copy these all into the filewrapper...
What I found was that the files were indeed copied into the wrapper with the file structure I wanted, but when the actual wrapper was saved, these files all magically disappeared.
Great.
So, I trashed my existing solution and tried to use file wrappers instead. This solution involved creating a content wrapper file directory when a new document was created, or loading in a content directory file wrapper upon opening a document.
When an image was added/modified, I created the necessary directory wrappers inside this root content wrapper (i.e. an images directory wrapper if it didn't already exist, or any other intermediary directory wrappers that needed to be created) and then created a regular file wrapper for the media, removing any existing wrapper for that file name if one was there.
Saving the document was just a case of making sure the content file wrapper was added to the document file wrapper, and the document would save.
Well... it did. The first time. However, any attempts to make any subsequent changes i.e add an image, save. Then replace image, save. Did not behave as expected, only showing the image from the first save.
So, my question is... first of all, which of the above approaches is the correct one, if at all, and what am I doing that wrong for them to fail.
And secondly, as I expect to be managing 1000s of images, is using file wrappers the correct way to go about things at all.
With that much media in play, you should likely give your users control over whether the media resides in the document or only a reference to the media is included in the document, and the media resides elsewhere, such as in a library/repository managed by your application. Then they could save out a (potentially many times larger) copy with all references resolved.
You might want to zip/unzip any directory so that users don't get confused trying to attach the document to an email. I believe iWork has been doing this with its document bundles for a while now.
As far as what you are doing wrong, no-one can say, as you haven't provided any code demonstrating what you are doing.
Why don't you create a one-off application that lets you select files on disk and saves those files in a document using a file wrapper? This would let you tackle this functionality without any interference from other issues in your application. Once you understand how to use file wrappers, you can port the code back or just write new code that works.