We Keep Coding

Unable to move directory in azure using ShareDirectoryClient

Normally we can move the directory using
// source is: "C:\Songs\Elvis my Man"
// newLocation is: "C:\Songs\Elvis"
try
{
// Previous command was: Directory.Move(source, newLocation);
DirectoryInfo dir = new DirectoryInfo(source);
dir.MoveTo(newLocation);
}
catch (Exception e)
{
Console.WriteLine("Error: "+ e.Message);
}
Now, when using the azure:
string myconnectionString = ConfigurationManager.ConnectionStrings["StorageConnection"].ConnectionString.ToString();
string myshareName = "Mysampleshare";
string mydirName = "Mysampledir";
// Get a reference to a share and then create it
ShareClient myshare = new ShareClient(myconnectionString, myshareName);
ShareDirectoryClient directory1 = myshare.GetDirectoryClient(mydirName);
string myshareName2 = "Mysampleshare2";
string mydirName2 = "Mysampledir2";
// Get a reference to a share and then create it
ShareClient myshare2 = new ShareClient(myconnectionString, myshareName2);
ShareDirectoryClient directory2 = myshare2.GetDirectoryClient(mydirName2);
Directory.Move(directory1.Path, directory2.Path);
I am unable to move the directory from one location to another using azure. I am getting exception.
DirectoryNotFoundException: The path specified by sourceDirName is invalid
Please suggest your advice.

ShareDirectoryClient essentially implements Azure File Service REST API thus you cannot use System.IO operations like Directory.Move with it.
There are two possible solutions:
If you want to use the SDK, what you will need to do is list files and directories recursively in the source directory and then copy individual files from source directory to target directory. You will also need to create directories in the target directory as well. Once the copy operation is complete, then you will need to delete all files and directories from the source directory. Once the source directory is empty, only then you will be able to delete the source directory.
You will need to do all this because the REST API does not natively support move operation. To accomplish move, you will need to perform copy operation followed by delete operation.
If you want to use System.IO, then you will need to mount the file share as a shared network drive so that you can get a drive letter assigned to that file share. Once you have that, then you will be able to use operations like Directory.Move available in System.IO namespace.
UPDATE
Please try the code below:
using System;
using System.Threading.Tasks;
using Azure.Storage.Files.Shares;
namespace SO69798149
{
class Program
{
const string MyconnectionString = "DefaultEndpointsProtocol=https;AccountName=account-name;AccountKey=account-key";
const string MyshareName = "share-name";
const string SourceDirectoryName = "source-directory-name";
private const string RenamedDirectoryName = "new-directory-name";
static async Task Main(string[] args)
{
ShareClient myshare = new ShareClient(MyconnectionString, MyshareName);
ShareDirectoryClient sourceDirectoryClient = myshare.GetDirectoryClient(SourceDirectoryName);
ShareDirectoryClient targetDirectoryClient = myshare.GetDirectoryClient(RenamedDirectoryName);
await RenameDirectory(sourceDirectoryClient, targetDirectoryClient);
Console.WriteLine("Directory renamed.");
}
static async Task RenameDirectory(ShareDirectoryClient sourceDirectoryClient,
ShareDirectoryClient targetDirectoryClient)
{
//Create target directory
await targetDirectoryClient.CreateIfNotExistsAsync();
//List files and folders from the source directory
var result = sourceDirectoryClient.GetFilesAndDirectoriesAsync();
await foreach (var items in result.AsPages())
{
foreach (var item in items.Values)
{
if (item.IsDirectory)
{
//If item is directory, then get the child items in that directory recursively.
await RenameDirectory(sourceDirectoryClient.GetSubdirectoryClient(item.Name),
targetDirectoryClient.GetSubdirectoryClient(item.Name));
}
else
{
//If item is file, then copy the file and then delete it.
var sourceFileClient = sourceDirectoryClient.GetFileClient(item.Name);
var targetFileClient = targetDirectoryClient.GetFileClient(item.Name);
await targetFileClient.StartCopyAsync(sourceFileClient.Uri);
await sourceFileClient.DeleteIfExistsAsync();
}
}
}
//Delete source directory.
await sourceDirectoryClient.DeleteIfExistsAsync();
}
}
}

Android: How do I construct *full* path to pass to Intent.CreateChooser

Trying to make Android chooser to display available actions for user to launch a PDF file which is stored in my local folder.
When I pass the file name like /data/user/0/myappappname/files/output.pdf , (which exsists, of course), I get a nice chooser with all the apps that can accept a pdf file. But when I pick any of them, I get an error (from external app) The document path is not valid. No exception is thrown.
Then I tried (for testing purposes) to set fname to something like /storage/emulated/0/Download/TLCL.pdf (file also exists), and everything works fine.
At first, I thought that this has something to do with file permissions (since first path is private to my app), but then I found flag ActivityFlags.GrantReadUriPermission built exactly for purpose of temporarily granting file access to other apps. Still same results.
Since this is a Xamarin.forms project, I am limited in choice of file creation locations (I use PCLStorage, which always writes to app-private, local folder), so I don't have an option of generating files in /Documents, /Downloads etc.
I am obviously doing something wrong. Any ideas appreciated.
Is there an option to get full path from system, including the /storage/emulated/0 part (or whatever that would be on other devices)? Maybe that would help?
Piece of code:
(mimeType is defined as "application/pdf" earlier)
public async Task<bool> LaunchFile(string fname, string mimeType)
{
var uri = Android.Net.Uri.Parse("file://" + fname );
var intent = new Intent(Intent.ActionView);
intent.SetDataAndType(uri, mimeType);
intent.SetFlags(ActivityFlags.ClearWhenTaskReset | ActivityFlags.NewTask | ActivityFlags.GrantReadUriPermission );
try
{
Forms.Context.StartActivity(Intent.CreateChooser(intent, "ChooseApp"));
return true;
}
catch (Exception ex)
{
Debug.WriteLine("LaunchFile: " + ex.Message);
return false;
}

My solution to this, which may not be exactly what you want, is to generate a file (in my case a zip file), export it to a public folder, and use that file for the chooser.
Using these:
private readonly string PublicDocsPath = Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/AppName";
private readonly string PrivateDocsPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);
and some basic functions:
public Stream GetOutputStream(string destFilePath)
{
string destFolderPath = Path.GetDirectoryName(destFilePath);
if (!Directory.Exists(destFolderPath))
Directory.CreateDirectory(destFolderPath);
return new FileStream(destFilePath, FileMode.Create, FileAccess.Write, FileShare.None);
}
public Stream GetInputStream(string sourceFilePath)
{
if (!File.Exists(sourceFilePath)) throw new FileNotFoundException();
string sourceFolderPath = Path.GetDirectoryName(sourceFilePath);
return new FileStream(sourceFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
}
You can copy your file to your public folder (or subfolders, you just have to assemble the path) and use that file for your chooser:
public void SendEmail(string subject, string body, string recipient, string mimeType, string attachmentFilePath, string activityTitle)
{
var emailIntent = new Intent(Intent.ActionSendMultiple);
if (string.IsNullOrEmpty(subject)) throw new ArgumentException();
emailIntent.PutExtra(Intent.ExtraSubject, subject);
if (!string.IsNullOrEmpty(recipient))
emailIntent.PutExtra(Intent.ExtraEmail, new[] { recipient });
if (!string.IsNullOrEmpty(body))
emailIntent.PutExtra(Intent.ExtraText, body);
if (!string.IsNullOrEmpty(attachmentFilePath))
{
var file = new Java.IO.File(attachmentFilePath);
file.SetReadable(true, true);
var uri = Android.Net.Uri.FromFile(file);
emailIntent.PutParcelableArrayListExtra(Intent.ExtraStream, new List<IParcelable>(){uri});
}
emailIntent.SetType(mimeType);
_activity.StartActivity(Intent.CreateChooser(emailIntent, activityTitle));
}
This chooser specifically lets the user send their file via email or google drive , but you can assemble it however you want. The attachmentFilePath of this function is the same as the string passed into the GetOutputStream function above.

we're using Acr.IO rather than PCLStorage and I recall that has a property that'll return the fullpath for you.
The code we're using is below, but I wonder if you're simply missing "file://" off the start of your path, as I noticed thats in our code, as well as this previous stackoverflow answer to a similar question as this one, open a PDF in Xamarin.Forms (Android)
We're using a dependency FileService on Android and using this code to open PDFs:
public void OpenNatively(string filePath) {
Android.Net.Uri uri;
if (filePath.StartsWithHTTP()) {
uri = Android.Net.Uri.Parse(filePath);
}
else {
uri = Android.Net.Uri.Parse("file:///" + filePath);
}
Intent intent = new Intent(Intent.ActionView);
var extension = filePath.Substring(filePath.LastIndexOf(".")+1);
if (extension == "ppt" || extension == "pptx") {
extension = "vnd.ms-powerpoint";
}
var docType = "application/" + extension;
intent.SetDataAndType(uri, docType);
intent.SetFlags(ActivityFlags.ClearWhenTaskReset | ActivityFlags.NewTask);
try {
Xamarin.Forms.Forms.Context.StartActivity(intent);
}
catch (Exception e) {
Toast.MakeText(Xamarin.Forms.Forms.Context, "No Application found to view " + extension.ToUpperInvariant() + " files.", ToastLength.Short).Show();
}
}

ASP Web API create directory on server gives access denied

I'm trying to create a directory on the server for saving files as links, when I create a directory it gives access denied to the file path.
This is how I do it
public static string CreateFile(string FilePath)
{
string Path = "";
string RootPath = System.Web.HttpContext.Current.Server.MapPath("");
//RootPath = RootPath.Substring(0, RootPath.Length - cropsize);
System.IO.DirectoryInfo DirInfo = new System.IO.DirectoryInfo(RootPath + FilePath);
System.Security.AccessControl.DirectorySecurity DirPermission = new System.Security.AccessControl.DirectorySecurity();
System.Security.AccessControl.FileSystemAccessRule FRule = new System.Security.AccessControl.FileSystemAccessRule
("Everyone", System.Security.AccessControl.FileSystemRights.ReadAndExecute, System.Security.AccessControl.AccessControlType.Allow);
DirPermission.AddAccessRule(FRule);
if (DirInfo.Exists == false)
{
System.IO.Directory.CreateDirectory(RootPath + FilePath);
}
Path = RootPath + FilePath;
return Path;
}
It's a Web API, not a website.
I'm uploading the files from a mobile, I managed the reading part.
The Server.MapPath("") is returning D:\\home...\\api
It's located on an external server
I tried this code running the service locally and it worked, but on external server it gives the error above.
Also, is there an other way to save the files as links?
About the problem:
I'm uploading the file from a mobile device and reading the file from the service as byte[], and I don't want to save the bytes directly to the database, I only want the Url of the file.

How to check a folder exists in DropBox using DropNet

I'm programming an app that interact with dropbox by use DropNet API. I want to check if the folder is exist or not on dropbox in order to I will create one and upload file on it after that. Everything seen fine but if my folder is exist it throw exception. Like this:
if (isAccessToken)
{
byte[] bytes = File.ReadAllBytes(fileName);
try
{
string dropboxFolder = "/Public/DropboxManagement/Logs" + folder;
// I want to check if the dropboxFolder is exist here
_client.CreateFolder(dropboxFolder);
var upload = _client.UploadFile(dropboxFolder, fileName, bytes);
}
catch (DropNet.Exceptions.DropboxException ex) {
MessageBox.Show(ex.Response.Content);
}
}

I'm not familiar with dropnet, but looking at the source code, it appears you should be able to do this by using the GetMetaData() method off of your _client object. This method returns a MetaData object.
Example:
//gets contents at requested path
var metaData = _client.GetMetaData("/Public/DropboxManagement/Logs");
//without knowing how this API works, Path may be a full path and therefore need to check for "/Public/DropboxManagement/Logs" + folder
if (metaData.Contents.Any(c => c.Is_Dir && c.Path == folder)
{
//folder exists
}

C# Path Problem

I have this file: C:\Documents and Settings\extryasam\My Documents\Visual Studio 2010\Projects\FCR\WebApplication4\config\roles.txt and I want to import it into my C# application. If I insert the full path it's ok, but I want to do something similar to what we do with websites, and that is "\config\roles.txt"
However with the below code, this is not working.
This is my code:
public string authenticate()
{
WindowsIdentity curIdentity = WindowsIdentity.GetCurrent();
WindowsPrincipal myPrincipal = new WindowsPrincipal(curIdentity);
//String role = "NT\\Internet Users";
//string filePath = Server.MapPath("config/roles.txt");
//string filePath = (#"~/WebApplication4/config/roles.txt");
//string filePath = Path.GetDirectoryName(#"\config\roles.txt");
string filePath = Path.GetPathRoot(#"/config/roles.txt");
string line;
string role = "";
if (File.Exists(filePath))
{
StreamReader file = null;
try
{
file = new StreamReader(filePath);
while ((line = file.ReadLine()) != null)
{
role = line;
}
}
finally
{
if (file != null)
{
file.Close();
}
}
}
if (!myPrincipal.IsInRole(#role))
{
return "401.aspx";
}
else
{
return "#";
}
}

In ASP.NET, you can use ~/config/roles.txt - in combination with Server.MapPath(), you can get the full path.
[...] ASP.NET includes the Web application root operator (~), which
you can use when specifying a path in server controls. ASP.NET
resolves the ~ operator to the root of the current application. You
can use the ~ operator in conjunction with folders to specify a path
that is based on the current root.
(see http://msdn.microsoft.com/en-us/library/ms178116.aspx)
So you could try the following:
string filePath = System.Web.HttpContext.Current.Server.MapPath("~/config/roles.txt");

You can use Server.MapPath to map the specified relative or virtual path to the corresponding physical directory on the server.

Since you are working locally you can use absolute path to that file and it's will works.
But what about situation when web application that contains roles.txt file will be deployed on some web server and user will try to access this file from another machine?
You can use the approach below to access file hosted on a web server from a Windows application:
using (var stream = new WebClient().OpenRead("your_web_application_root_url/configs/roles.txt"))
using (var reader = new StreamReader(stream))
{
Console.WriteLine(reader.ReadToEnd());
}
Be warned that share security settings over network is not quite good idea.

You should select your file and press F4, and choose copy to output directory. Then you will be able to work with it

You could try embedding the file as a resource in your project. Something like this: How to embed a text file in a .NET assembly?