I am new to winforms and facing one problem in my application. I am trying to show the user to save a file using SaveFileDialog control on my form. But as soon as the user chooses his directory and saves his file, my next code which uses Directory.getCurrentDirectory() fails to point to my working directory. It seems that SaveFileDialog is causing problem here.
For eg:- I have these lines of code -
MessageBox.Show( Directory.GetCurrentDirectory( ) ); // output: C:\TestSamples\TestApp\Bin\Debug
fdSave.ShowDialog( ); // fdSave is SaveFileDialog control which will show to save file
MessageBox.Show( Directory.GetCurrentDirectory( ) ); //output: C:\Program files\outputDir (This is the path chosen by user to save file in previous saveDialog.)
Is there any solution for this so that my current working directory does not get changed or should I keep a variable to store my current working directory before saveDialog is used?
I found a possible answer in the comments on Raymond Chen's excellent blog:
in the class System.Windows.Forms.FileDialog, there is a property 'RestoreDirectory'
Well you could use the Application.StartupPath if you always wanted it to point to the bin directory
Related
I have the two following methods and I am using them to store a special value locally and be able to access it on application restart:
(Store value locally:)
private void SaveSet(string key, string value)
{
ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(this);
ISharedPreferencesEditor prefEditor = prefs.Edit();
prefEditor.PutString(key, value);
// editor.Commit(); // applies changes synchronously on older APIs
prefEditor.Apply(); // applies changes asynchronously on newer APIs
}
(Read it again:)
private string RetrieveSet(string key)
{
ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(this);
return prefs.GetString(key, null);
}
This works perfectly. Now is it possible to access and edit this Shared Preferences externally? Unfortunately, I cannot find any file when searching in folder
Phone\Android\data\com.<company_name>.<application_name>\files
nor anywhere else. I want / try to edit this value from my computer, after connecting the phone to it. Is this possible?
Alternatively: Can anyone maybe show me how to create a new file in the given path above, write/read it programmatically and how it stays there, even if application is closed / started again? So I can then edit this file with my computer anyhow?
I tried it with the following code, but unfortunately it doesn't work / no file is created or at least i cannot see it in the given path above:
//"This code snippet is one example of writing an integer to a UTF-8 text file to the internal storage directory of an application:"
public void SaveValueIntoNewFile(int value)
{
var backingFile = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), "newFile.txt");
using (var writer = System.IO.File.CreateText(backingFile))
{
writer.WriteLine(value.ToString());
}
}
Would be very happy about every answer, thanks in advance and best regards
What you're looking for is where Android stores the Shared Preference file for applications that make use of it's default PreferenceManager.
I'd refer to this SO post which answers your question pretty well
SharedPreferences are stored in an xml file in the app data folder,
i.e.
/data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PREFS_NAME.xml
or the default preferences at:
/data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PACKAGE_NAME_preferences.xml
SharedPreferences added during runtime are not stored in the Eclipse
project.
Note: Accessing /data/data/ requires superuser
privileges
A simple method is to use Android Device Monotor,you can open it by clicking Tools--> android-->Android Device Monotor...
For example:
The path in my device is as follows:
/data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PACKAGE_NAME_preferences.xml
And we notice three buttons in the upper right corner of the picture.
The first one is used toPull a file from the device,the second one is used to Push a file onto the device,and the last one is used to delete the preferences.xml file.
So we can pull the preferences.xml file from current device to our computer and edit it as we want, and then push the updated preferences.xml to the folder again.Then we will get the value of preferences.xml file .
So I'm trying to dynamically create a folder inside the web pages folder.
I'm making a game database. Everytime a game is added I do this:
public void addGame(Game game) throws DatabaseException {
em.getTransaction().begin();
em.persist(game);
em.getTransaction().commit();
File file = new File("C:\\GameDatabaseTestFolder");
file.mkdir();
}
So everything works here.
The file get's created.
But I want to create the folder like this:
public void addGame(Game game) throws DatabaseException {
em.getTransaction().begin();
em.persist(game);
em.getTransaction().commit();
File file = new File(game.getId()+"/screenshots");
file.mkdir();
}
Or something like that. So it will be created where my jsp files are and it will have the id off the game.
I don't understand where the folder is created by default.
thank you in advance,
David
It's by default relative to the "current working directory", i.e. the directory which is currently open at the moment the Java Runtime Environment has started the server. That may be for example /path/to/tomcat/bin, or /path/to/eclipse/workspace/project, etc, depending on how the server is started.
You should now realize that this condition is not controllable from inside the web application.
You also don't want to store it in the expanded WAR folder (there where your JSPs are), because any changes will get lost whenever you redeploy the WAR (with the very simple reason that those files are not contained in the original WAR).
Rather use an absolute path instead. E.g.
String gameWorkFolder = "/path/to/game/work/folder";
new File(gameWorkFolder, game.getId()+"/screenshots");
You can make it configureable by supplying it as a properties file setting or a VM argument.
See also:
Image Upload and Display in JSP
getResourceAsStream() vs FileInputStream
I have the following requirement for a business application:
(All of this could be on local or server)
Allow user to select folder location
Show contents of folder
Print selected items from folder (*.pdf)
Display which files have been printed
Potentially move printed files to new location (sub-folder of printed)
How can I make this happen in Silverlight?
Kind regards,
ribald
First of all, all but the last item can be done (the way you expect). Due to security protocols, silverlight cannot access the user's drive and manipulate it. The closest you can get is accessing silverlight's application storage which will be of no help to you whatsoever in this case. I will highlight how to do the first 4 items.
Allow user to select folder location & Show contents of folder
public void OnSelectPDF(object sender)
{
//create the open file dialog
OpenFileDialog ofg = new OpenFileDialog();
//filter to show only pdf files
ofg.Filter = "PDF Files|*.pdf";
ofg.ShowDialog();
byte[] _import_file = new byte[0];
//once a file is selected proceed
if (!object.ReferenceEquals(ofg.File, null))
{
try
{
fs = ofg.File.OpenRead();
_import_file = new byte[fs.Length];
fs.Read(_import_file, 0, (int)fs.Length);
}
catch (Exception ex)
{
}
finally
{
if (!object.ReferenceEquals(fs, null))
fs.Close();
}
//do stuff with file - such as upload the file to the server
};
}
If you noticed, in my example, once the file is retrieved, i suggest uploading it to a webserver or somewhere with temporary public access. I would recommend doing this via a web service. E.g
//configure the system file (customn class)
TSystemFile objFile = new TNetworkFile().Initialize();
//get the file description from the Open File Dialog (ofg)
objFile.Description = ofg.File.Extension.Contains(".") ? ofg.File.Extension : "." + ofg.File.Extension;
objFile.FileData = _import_file;
objFile.FileName = ofg.File.Name;
//upload the file
MasterService.ToolingInterface.UploadTemporaryFileAsync(objFile);
Once this file is uploaded, on the async result, most likely returning the temporary file name and upload location, I would foward the call to some javascript method in the browser for it to use the generic "download.aspx?fileName=givenFileName" technique to force a download on the users system which would take care of both saving to a new location and printing. Which is what your are seeking.
Example of the javascript technique (remember to include System.Windows.Browser):
public void OnInvokeDownload(string _destination)
{
//call the browser method/jquery method
//(I use constants to centralize the names of the respective browser methods)
try
{
HtmlWindow window = HtmlPage.Window;
//where BM_INVOKE_DOWNLOAD is something like "invokeDownload"
window.Invoke(Constants.TBrowserMethods.BM_INVOKE_DOWNLOAD, new object[] { _destination});
}
catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.ToString()); }
}
Ensure you have the javascript method existing either in an included javaScript file or in the same hosting page as your silverlight app. E.g:
function invokeDownload(_destination) {
//some fancy jquery or just the traditional document.location change here
//open a popup window to http://www.myurl.com/downloads/download.aspx? fileName=_destination
}
The code for download.aspx is outside the scope of my answer, as it varies per need and would just lengthen this post (A LOT MORE). But from what I've given, it will "work" for what you're looking for, but maybe not in exactly the way you expected. However, remember that this is primarily due to silverlight restrictions. What this approach does is rather than forcing you to need a pluging to view pdf files in your app, it allows the user computer to play it's part by using the existing adobe pdf reader. In silverlight, most printing, at least to my knowledge is done my using what you call and "ImageVisual" which is a UIElement. To print a pdf directly from silverlight, you need to either be viewing that PDF in a silverlight control, or ask a web service to render the PDF as an image and then place that image in a control. Only then could you print directly. I presented this approach as a lot more clean and direct approach.
One note - with the temp directory, i would recommend doing a clean up by some timespan of the files on the server side everytime a file is being added. Saves you the work of running some task periodically to check the folder and remove old files. ;)
Im writing WPF application and want to add ability to call jump list and open program configuration, app.config or log directory from it. Is it possible(cant find the way to do that..just JumpTasks with application path and JumpPath with path to file, and not just path to be opened via explorer)?
Found answer here. Seems that JumpList wasnt designed for opening anything but files or applications, associated with current program. So that when we see directories in explorer tasklist -it actually means: use explorer with parameters. By the way ill try to use it.
Update
made it with such code:
string explorerPath = #"%windir%\explorer.exe";
JumpTask path = new JumpTask
{
CustomCategory = "Paths",
Title = "Open program directory",
IconResourcePath = explorerPath,
ApplicationPath = explorerPath,
Arguments = #"/root," + AppDomain.CurrentDomain.BaseDirectory,
Description = AppDomain.CurrentDomain.BaseDirectory
};
Im leaving this answer here, because someone can have similar incomprehension.
I am trying to use a hyperlinkbutton in silverlight to enable the user to download a word document. I don't care if a file save as box appears or if the word doc opens in a new browser. I get the error "cannot navigate to locations relative to a page." I've seen it posted that you can do this with the absolute path (www.domain.com/filename.doc) but there's got to be a way to make this relative (/docs/filename.doc). Anyone know how?
Slightly easier:
Uri myAbsoluteUri = new Uri(HtmlPage.Document.DocumentUri, myRelativePath);
The HyperlinkButton only works with absolute URLS, so you should fixup your URLs at runtime:
uriCurrent = System.Windows.Browser.HtmlPage.Document.DocumentUri;
string current = uriCurrent.OriginalString;
int iLastSlash = current.LastIndexOf('/') + 1;
current = current.Remove(iLastSlash, current.Length - iLastSlash);
from Silverlight.net forums.