Develop Reference

How can I iterate all files under a folder but some special sub folders I don't want to iterate?

For example, I have a folder called Effects, and there are tons of sub folders in it. I don't want to iterate files under Effects/Materials but others I want to iterate. How should I do that?

Please see below code:
class Program
{
static void Main(string[] args)
{
IterateItemsInFolder(#"C:\Users\MT\Desktop\Effects");
}
public static void IterateItemsInFolder(string path)
{
// We ignore Materials folder
if (Path.GetFileName(path) == "Materials") return;
// Get all files and directories in direcotry
var items = Directory.GetFileSystemEntries(path);
foreach(var item in items)
{
var attr = File.GetAttributes(item);
// If current item is directory, recurse.
if (attr.HasFlag(FileAttributes.Directory))
{
IterateItemsInFolder(item);
}
else
{
Console.WriteLine(item);
}
}
}
}

Skip Directories StartsWith or Contains or any other logic you want -
var directoryToSearch = #"C:\SearchDir\";
var directoryToExclude = #"C:\SearchDir\Exclude";
var files = (from f in Directory.GetFiles(directoryToSearch, "*.*", SearchOption.AllDirectories)
let directoryName = Path.GetDirectoryName(f)
where !directoryName.Contains(directoryToExclude)
select f).ToList();
return;

How can I download files from Sharepoint?

I'm browsing my instance, https://instance.sharepoint.com/1234/abc
That page contains a list of several folders and files. How do I download files from that path?
ClientContext cxt = new ClientContext(fullWebUrl);
cxt.Credentials = new SharePointOnlineCredentials(username, new NetworkCredential("", password).SecurePassword);
List list = cxt.Web.Lists.GetByTitle("Documents");
cxt.Load(list);
cxt.ExecuteQuery();
FolderCollection fcol = list.RootFolder.Folders;
List<string> lstFile = new List<string>();
foreach (Folder f in fcol)
{
if (f.Name == "filename")
{
cxt.Load(f.Files);
cxt.ExecuteQuery();
FileCollection fileCol = f.Files;
foreach (Microsoft.SharePoint.Client.File file in fileCol)
{
lstFile.Add(file.Name);
}
}
}
This fails down at the foreach with the error
Microsoft.SharePoint.Client.CollectionNotInitializedException: 'The collection has not been initialized
Would not cxt.ExecuteQuery do the job?

you can make a mass download from a SharePoint library without using code, just do the following:
1:go to your SharePoint Library
2:copy the full path
for example
https://sharepointdomain.com/sites/yoursite/yourLibraryName/forms/Allitems.aspx
now remove
/forms/allitems.aspx from the address and you will remain with
https://sharepointdomain.com/sites/yoursite/yourLibraryName
copy that and open your windows file browser and paste that in the address bar and your library will be opened as a local folder, then you can select all files and copy them to any destination even you can move them to another SharePoint library you might be prompted to enter your SharePoint credentials make sure to enter it is as follow:
username is : domain\your SharePoint user name
password : your SharePoint login password.

You need to load the FolderCollection fcol first (cxt.Load(fcol)):
List list = cxt.Web.Lists.GetByTitle("Documents");
cxt.Load(list);
cxt.ExecuteQuery();
FolderCollection fcol = list.RootFolder.Folders;
cxt.Load(fcol);
cxt.ExecuteQuery();
List<string> lstFile = new List<string>();
foreach (Folder f in fcol)
{
if (f.Name == "filename")
{
cxt.Load(f.Files);
cxt.ExecuteQuery();
FileCollection fileCol = f.Files;
foreach (Microsoft.SharePoint.Client.File file in fileCol)
{
lstFile.Add(file.Name);
}
}
}
To download the file:
foreach (Microsoft.SharePoint.Client.File file in fileCol)
{
var localstream = System.IO.File.Open("c:/" + file.Name, System.IO.FileMode.CreateNew);
var fileInfo = File.OpenBinaryDirect(cxt, file.ServerRelativeUrl);
var spstream = fileInfo.Stream;
spstream.CopyTo(localstream);
}

UnAuthorized exception when trying to get folder name

I tried to extract all my files and folders starting in c:\ to a tree data structure.
I get an UnAuthorized exception for some directories.
Is there another solution to check to see if I have permission to a folder?
I also tried using directoryName.Exists - it did not work.
my code:
private static void getAllFilesAndFoldersInPath(TreeView treeView, string path)
{
treeView.Items.Clear();
var stack = new Stack<TreeViewItem>();
var rootDirectory = new DirectoryInfo(path);
TreeViewItem node = new TreeViewItem();
node.Header = rootDirectory;
stack.Push(node);
while (stack.Count > 0)
{
var currentNode = stack.Pop();
var directoryInfo = (DirectoryInfo)currentNode.Header;
try
{
foreach (var directory in directoryInfo.GetDirectories())
{
if (!directory.Name.StartsWith("$"))
{
TreeViewItem childDirectoryNode = new TreeViewItem();
childDirectoryNode.Header = directory;
currentNode.Items.Add(childDirectoryNode);
stack.Push(childDirectoryNode);
}
}
foreach (var file in directoryInfo.GetFiles())
{
if (System.IO.Path.GetFileName(file.Name).StartsWith("~$") || System.IO.Path.GetExtension(file.Name) == ".tmp")
{
continue;
}
TreeViewItem tempNode = new TreeViewItem();
tempNode.Header = file;
currentNode.Items.Add(tempNode);
}
}
catch (UnauthorizedAccessException e) { }
}
treeView.Items.Add(node);
}

I would use EnumerateDirectories instead of GetDirectories. Much, much faster.
In your catch statement - do something with the exception. Don't just let the code swallow it, this is bad programming.
I have a handy little method I wrote awhile back that works well for me, feel free to give it a spin:
public IEnumerable<T> Find<T>(DirectoryInfo workingDirectory,
string searchPattern,
bool recursive = false)
where T : FileSystemInfo
{
var results = workingDirectory.EnumerateFileSystemInfos(searchPattern,
recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly);
return results.OfType<T>();
}
Where in your case you might call it like this:
var dirTree = Find<DirectoryInfo>(new DirectoryInfo("C:\\"), "*", true);

how to display all folder and sub folder from FTP using c# windows application?

i want to display the all the files and sub folders from FTP using c#
how do i do?
can you one upload code?
i have tried import data from FTP in Tree view.but i cannot do
my code:
private TreeNode CreateDirectoryNode(string root, string p)
{
var directoryNode = new TreeNode("CGT");
var directoryListing = GetDirectoryListing(path);
var directories = directoryListing.Where(d => d.IsDirectory);
var files = directoryListing.Where(d => !d.IsDirectory);
foreach (var dir in directories)
{
directoryNode.Nodes.Add(CreateDirectoryNode(dir.FullPath, dir.Name));
}
foreach (var file in files)
{
directoryNode.Nodes.Add(new TreeNode(file.Name));
}
return directoryNode;
}
Leave this code this for example only..you people please help me out of here

Denied access to User Folder

I Need to find my pictures in my User folder. But I get the runtime error Access Denied
Here is my code
static void Main(string[] args)
{
string pic = "*.jpg";
string b = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
string appdata = Path.Combine(b, "AppData"); // I Dont want search in this folder.
string data = Path.Combine(b, "Data aplikací"); // Here also not.
foreach (string d in Directory.GetDirectories(b))
{
try
{
if ((d == data) || (d == appdata))
{
continue;
}
else
{
foreach (string f in Directory.GetFiles(d, pic))
{
//...
}
}
}
catch (System.Exception excpt)
{
Console.WriteLine(excpt.Message);
}
}
}
Running the application as admin doesn't work either. How to avoid this?

check if the folder is read only (in windows) if it is, just clear the read only flag.
if it isn't read only, make sure that the admin user has full rights on that folder. You can check this by right clicking on the folder --> properties --> security
check out this link for more information on how to set it programatically:
C# - Set Directory Permissions for All Users in Windows 7

Oh, don't go changing your directory/folder permissions - that's just asking for future pain.
There's no "one-liner" solution here - basically, you need to recursively walk through the folder structure looking for the files you care about, and absorbing/eating the UnauthorizedAccessExceptions along the way (you could avoid the exception altogether by checking DirectoryInfo.GetAccessControl, but that's a whole different question)
Here's a blob o'code:
void Main()
{
var profilePath = Environment
.GetFolderPath(Environment.SpecialFolder.UserProfile);
var imagePattern = "*.jpg";
var dontLookHere = new[]
{
"AppData", "SomeOtherFolder"
};
var results = new List<string>();
var searchStack = new Stack<string>();
searchStack.Push(profilePath);
while(searchStack.Count > 0)
{
var path = searchStack.Pop();
var folderName = new DirectoryInfo(path).Name;
if(dontLookHere.Any(verboten => folderName == verboten))
{
continue;
}
Console.WriteLine("Scanning path {0}", path);
try
{
var images = Directory.EnumerateFiles(
path,
imagePattern,
SearchOption.TopDirectoryOnly);
foreach(var image in images)
{
Console.WriteLine("Found an image! {0}", image);
results.Add(image);
}
var subpaths = Directory.EnumerateDirectories(
path,
"*.*",
SearchOption.TopDirectoryOnly);
foreach (var subpath in subpaths)
{
searchStack.Push(subpath);
}
}
catch(UnauthorizedAccessException nope)
{
Console.WriteLine("Can't access path: {0}", path);
}
}
}