I have created an application to upload files to a mapped network drive(say: Z:), but is showing the error:
System.IO.DirectoryNotFoundException: Could not find a part of the path 'Z'.
What i did:
Created a web page with FileUpload control & a button.In button click event i have used the code as below.
[Code]....
I have seen some examples on other sites , but since im not familiar enough with DirectoryInfo and Files from the System.IO namespace, i dont know how to change it to fit my needs. So i found a very simple example that works, but i have some questions.
Here is the code i found:
[Code]....
This works great and lists the files in my root directory.
#1 - What i need to know is how to accomplish the same thing but in a format i can control, this code simply displays the files at the top of my page and pushes everything down. So does anyone know of a good and simple tutorial written in C#?
#2 - I also need to be able to setup the code so that certain files within the directories are not displayed, as in the code behind files and other files to be determined by the business.
Short Version: Can anyone say whether it's possible or not to use impersonation in ASP.NET to access mapped drives?
Long Version:
I'm currently using impersonation in ASP.NET to gain access to network files. This is working perfectly for any network file using a UNC path, but it is failing to access any files on mapped drives defined for the user account I'm impersonating.
For example, let's say a file lives on the network at "machinefolderfile.txt", and let's also say that drive S: is mapped to "machinefolder". We need to be able to access both the full UNC path, "machinefolderfile.txt", as well as the shorter, mapped drive path, "S:file.txt".
Obviously the standard ASP.NET process cannot access either.
Using a console application that runs under the local account with the mapped S: drive, calling File.Exists(@"machinefolderfile.txt") returns true, and File.Exists(@"S:file.txt") also returns true.
However, when impersonating in an ASP.NET context with the same local account, only File.Exists(@"machinefolderfile.txt") returns true. File.Exists(@"S:file.txt") returns false.
I'm testing with IIS 7 running on my local Windows 7 Professional box, though this will need to run in both IIS 6 and IIS 7.
Impersonation is handled with a couple of classes in C# which I'll include here:
public static class Impersonation
{
private static WindowsImpersonationContext context;
public static void ImpersonateUser(string username, string password)
{
ImpersonateUser(".", username, password);
}
public static void ImpersonateUser(string domain, string username, string password)
{
StopImpersonating();
IntPtr userToken;
var returnValue = ImpersonationImports.LogonUser(username, domain, password,
ImpersonationImports.LOGON32_LOGON_INTERACTIVE,
ImpersonationImports.LOGON32_PROVIDER_DEFAULT,
out userToken);
context = WindowsIdentity.Impersonate(userToken);
}
public static void StopImpersonating()
{
if (context != null)
{
context.Undo();
context = null;
}
}
}
public static class ImpersonationImports
{
public const int LOGON32_LOGON_INTERACTIVE = 2;
public const int LOGON32_LOGON_NETWORK = 3;
public const int LOGON32_LOGON_BATCH = 4;
public const int LOGON32_LOGON_SERVICE = 5;
public const int LOGON32_LOGON_UNLOCK = 7;
public const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;
public const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
public const int LOGON32_PROVIDER_DEFAULT = 0;
[DllImport("advapi32.dll", SetLastError = true)]
public static extern int LogonUser(
string lpszUsername,
string lpszDomain,
string lpszPassword,
int dwLogonType,
int dwLogonProvider,
out IntPtr phToken
);
[DllImport("advapi32.dll", SetLastError = true)]
public static extern int ImpersonateLoggedOnUser(
IntPtr hToken
);
[DllImport("advapi32.dll", SetLastError = true)]
public static extern int RevertToSelf();
[DllImport("kernel32.dll", SetLastError = true)]
public static extern int CloseHandle(IntPtr hObject);
}
Then, during Page_Load, we basically do something like this:
Impersonation.ImpersonateUser("DOMAIN", "username", "password");
if (!File.Exists(@"S:file.txt"))
throw new WeCannotContinueException();
I realize using mapped drives isn't a best practice, but for legacy reasons it's desirable for our business. Can anyone say whether it's possible or not to use impersonation in ASP.NET to access mapped drives?
Need to upload files in mapped drive. i tried with UNC path. locally i tried with 2 systems its working fine. but in production environment its not working. Scenario is, 2 systems with windows 2003 server. one is app server and second is data server. Hosted app in IIS. Its something with the drive/folder permissions.
View 1 RepliesI have file locations stored in my DB. The locations are mapped drives on a different server. How can I access them? Do I need to set something up in IIS?
Here are som example locations:
\FILESERVERP4W$Documents - FCClient�0510911000LE~1.DOC
V:471471231File Note 28.11.08.1.doc
When I have a HttpHandler class in C#/ASP.NET mapped to a file extension in IIS any file with that extension fails to download/display in web browsers (it's downloaded as a 0-byte file in some browsers and nothing at all in other browsers). After removing the application mapping for the HttpHandler in IIS so it doesn't call the IHttpHandler class in C#, the web browser downloads the file successfully.
This was tested with an IHttpHandler class in C# that has an empty ProcessRequest method.
I want to upload files to the web servers from the client machines.
Can i upload a file on a network share folder using file upload control?
I would like to create a share folder on a file server sitting next to the web server. If i upload the file from the network share folder instead of uploading it from the client machine does it make any difference?
Will the file be stored in a temporary location before copying to the final destination? Where will be the file stored in this case of uploading it from share folder?
I would like to upload a file to network share drive e.g.
View 1 RepliesFrontend - IIS7 Server
Backend - SQL 2005 Server
I have an .net web form that upload an excel file to my server. I would like for this Excel file to be upload to my SQL server since it need to be process by a sql command and the SQL server cannot seems to be able to access the IIS7 when running the quary i needed. All i want to be able to do is to load this excel file to a folder within the SQL server.Here is my web.config folder path -
<appSettings>
<add key="FolderPath" value="Uploads/"/>
</appSettings>
and here is the code -
Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs)
If FileUpload1.HasFile Then
Dim FileName As String = Path.GetFileName(FileUpload1.PostedFile.FileName)
Dim Extension As String = Path.GetExtension(FileUpload1.PostedFile.FileName)
Dim FolderPath As String = ConfigurationManager.AppSettings("FolderPath")
[code]....
when i try to change the path in the web.config it will tell me it cannot use physical path only virtual.
Im using a file uploader to upoad files to a folder used for upload.But the problem is this folder is a linux folder. I have made it a shared folder so that I can access from windows by samba. So, file transfer is successful when I'm using os but when I try to upload something from my websites uploader to this folder, this process is not successful. I have given all permissions to this folder.Don't know whats the problem.I have used both type of slashes for directory but still it is not successful.
View 4 RepliesIn my asp.net wep application i would like to move the folders from the server to a network location so that the server doesnt get filled up.
i was able to move the files within the same drive but not to other network locations .
i am trying to upload files through the ASP.NET File Upload control.
Every thing is working fine, except for the fact that when i try to upload the file on the server i am getting an error: (probably some authorization exception).
do i need to give some rights to the upload up there on the server. If so then for which account and do i need to restart the server after giving rights?
I want to allow a user to upload several files with one upload action. What is the simplest way to do this?
View 3 RepliesI have a NEW company issued Dell laptop just installed VS 2008 Pro. When I am at work logged into the network all is well. When I go home and try to work is when I have issues (on or off of VPN does not mater; I get the same issue.). I open VS 2008 and try to open any aspx file in the IDE it freezse and will stay that way. I can open the ebCongif file if I try it first. Just cannot open aspx files....I have to open the task manager to kill the process. If any one has had this issue ...Also because we only have dot net framework 2.0 on our servers I am working with 2.0 in VS 2008.
i am using file upload control to upload the files in asp.net with vb.net as code behind. am storing the files in my local drive. my doubt is, how shall i read those file using asp.net application.
View 1 RepliesI have implemented this in my website as per my requirement. [URL] It is working fine in local. But i moved that code to dev server today... it is showing all the drives of dev server. (But my fuctionality is it should show all the drives of local computer who is accessing this ste).
View 1 RepliesMy ASP.NET MVC 2 application runs under built-in local NETWORK SERVICE account. I want to set up access permissions for the folder which resides in another computer, but in the same domain. I located that folder right-clicked to open its properties form, clicked to Security tab and pressed Add button which displayed Add user form with correct domain name in the location field. I referred to the account with following syntax:
<domain name><server name>$
because I learned that NETWORK SERVICE account uses machine account when connected to other computers in the domain. However, the system couldn't find the account, so refuses to add the account. Without the domain name it adds a user, but that user seems to be local user, not web server's NETWORK SERVICE account. What am I doing wrong?
By the way, the above syntax worked when I created login for the sql server which is different computer from the web server.
getting user's local machine drives in asp.net
When i use the code below
foreach (DriveInfo drive in DriveInfo.GetDrives())
{ Console.WriteLine(drive.Name);}
after deploying in server it get servers local drives
I have M:PDF-ImagesList-PDF drive on the Server with thousands of images stored.
On the M drive has folder:
M:PDF-ImagesList-PDF45404539532.pdf
4539533.pdf
4539534.pdf
4539537.pdf ...
How to access to the folder drive by using VB.NET or C# in the code-behind (securely: with username and password) for the users to be able to view images on the popup window?
See the code :
Protected Sub BtnServerDrive_Click(sender As Object, e As EventArgs) Handles BtnServerDrive.Click
Dim PartNumber As String = txtPartNumber.Text.Trim()
'Calculate the folder 4540 like container
Dim NumContainer as string = txtPartNumber.Text.Trim()
NumContainer = (txtPartNumber.Text.Trim / 1000 + 1).toString.Split(".").First
[Code] ....
How to achieve this results to access to the server drive to get images for view by using VB.NET or C# in code-behind. Servermappath, UNC, or else?
i have a folder on the server which contains jpeg files,mp4 files and also xml files...........
i would like to transfer the folder to a centralised storage server ,i would like to pass the credentials from the web page itself,,,,,,,,
what do i use for it
the storage server is within the network and all it needs is credentials to copy the folder which i m ready to pass....but i dont know the code which has to be used......
whether to use system.io.move
or
httpwebrequest.
how do i upload 20mb files using ASP.net. (using file upload control i have mentioned the following in httpruntime of web config file.
executionTimeout="90"
maxRequestLength="65536"
useFullyQualifiedRedirectUrl="false"
minFreeThreads="8"
minLocalRequestFreeThreads="4"
appRequestQueueLimit="100"
enableVersionHeader="true"
how to upload .txt files to sql database using asp.net(C#)
View 1 RepliesHow to upload files from ASP.NET web application to any web server(linux)..
View 2 RepliesI've been looking for a way to achieve this behavior and I found this sample project.
The trick in this project is that it changes the form target to an iframe created on the fly.
So far so good, I can get the byte[] on the server-side. But I need to change an image preview after the file is uploaded.
How can I get the iframe to update the main page? Would I have to save it on a file on the disk, make a javascript callback to change the image url? Is there another way to do this? What's recommended?
I have deployed my software on a server,In my software there is a tool which reads an excel file and displays the content in a gridView.
It's working fine on my stand-alone PC, how can I do it on the web?
Should I upload my excel files on server and then read it or directly read it from the user's PC?