Saving Files For Web Application?
Jun 19, 2015
I'm creating a web application where the users can upload and download files. In the past, I've usually done so by saving the files as binary in a sql database. I did this because, this way, I know which files belong to which users (based on an ID). How would I do this if I plan on saving the files on the HDD? I figure I would create a unique folder per user (and I would save their files there), but I'm wondering what the standard or better way of approaching this.
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Similar Messages:
Mar 23, 2011
Iam saving files in a dynamicall generated folder Intially.
Ex: FolderOne -------->abc.pdf
FolderTwo--------->abc2.pdf
Now my requirement is save those files in another folder
Ex: FolderOrder--------> abc.pdf and abc2.pdf
How can i do this
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Jul 13, 2011
I am trying to save some resized images to the server. Why I get the following error on the vSmlImgFle.Save(vTmpDir.ToString & vFile.Name, ImageFormat.Jpeg) (in red below) line?
A generic error occurred in GDI+.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+.
And while we are on the subject of dealing with image files, is there a way to get the file format from the original file, rather than looking at the file extension to determine the file type:
If Ext = "JPG" then
Type = ImageFormat.Jpeg
Else if Ext = "JPG" then
Etc.
I thought that vImgFormat = vOrgImgFle.RawFormat might do it but that seems to return something completely different than ImageFormat.Jpeg.
Code:
Protected Function CopyScaleImages(ByVal FileSet As FileInfo())
Dim vTmpDir As New DirectoryInfo(Server.MapPath("~/SanInspPhotosTemp/"))
Dim vDir As New DirectoryInfo(Server.MapPath("~/SanInspPhotos/"))
Dim imgHght As Integer
[Code] .....
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Jan 23, 2012
I am asking user to upload images using file upload control..In the database i am saving the filename as varchar. My problem is how do i save it.. If file name is saved in database where is file actually saved? If i make a folder to save,it is hard code path.. So, any way to save the file uploaded by user.
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May 16, 2010
I've got a project that's going to go on a dedicated server environment. I'll be uploading images to the server, but saving them outside of the virtual folder path of the actual website, like so:
protected void UploadImage_Click(object sender, EventArgs e)
{
string newFile = "C:\Images\myImage.jpg";
this.cb_fuMainImage.PostedFile.SaveAs(newFile); // from webform <input id="cb_fuMainImage" type="file" runat="server" />
}
Now, this works fine on my home computer. Is there anything I'll need to do with IIS or ASP.NET (possibly in web.config) for this to work properly on a production machine? Settings or permissions that may need changing?...
It will be on Window 2003 with IIS6 and ASP.NET 3.5 SP1.
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Jul 16, 2010
I have an ASP.NET application running on Apache server with mod_mono. If I have a folder called "temp" located in the website's root directory and run the following code
System.IO.TextWriter tw = new System.IO.StreamWriter("temp/test.txt");
tw.WriteLine(DateTime.Now);
tw.Close();
it saves test.txt in C:Program FilesMono-2.6.4in emp on the server. If I add a slash to the directory name like this: System.IO.TextWriter tw = new System.IO.StreamWriter("/temp/test.txt"); It saves it to C:/temp. Both do not do what I want. How do I get the code to save the file to the temp folder inside my website's root directory? Is this a mod_mono issue or something to do with Apache? I have tried adding this line to httpd.conf Alias /temp "C:/Path_to_root_folder/temp" without any luck. I shouldn't have to use alias if the temp folder is within the root directory, correct? In my development environment which uses XSP as the web server everything works as expected. It is only a problem when running on Apache.
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Feb 23, 2011
I'm trying to use an asp:FileUpload Control to allow users to upload files (.doc, .gif, .xls, .jpg) to a server that is outside of our DMZ and not the Web Server. We want to have the ability to look at these files for viruses, structure, etc prior to saving them into another directory that would allow access to outside users. From what I have read about this control is that it will allow for files to be uploaded to the web server. Can this control be used to upload files to a server other than the web server? If it can be done where should I look for this type of functionality or how do I force it to go to https:servernamefolder name (Where server name is not the web server)? Would I have to read the file then write it to the other server?
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Jan 24, 2010
I installed Windows 7 a few days ago and everything seemed to install fine. I opened up a rather large project I've been working on and opened up my dataset file. I created a new table in SQL Server 2005 and so in turn I created a new tableadapter. It went through the steps to create the tableadapter fine but when I tried to finish it, it took FOREVER to finally refresh. The table is small, about 6 fields with no data, and I waited 20 minutes at least for Visual Studio to finally respond again. Now I've tried to save my work and it's hung up again. I've been waiting another 20 minutes at least just for VS to save the file. Is there some known issue with datasets and Windows 7? This didn't happen in XP and I simply can't be waiting for an hour to simply add a table adapter and save the file.
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Apr 30, 2010
My web application is on a Webserver that is in a DMZ .
the web application must save on the server in LAN some files, but the webserver cannot access the file server because has no right to access. i wouldn't create an account for the web server, but i would that any time the application has to upload a file onto the file server make a connection that encapsulate credentials, then the upload starts ,finally the connection closes.
Is possible with some Objects to do this type of work?
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Feb 17, 2011
Short: Why do I get a security violation saving files from within an XMLRPC.NET method and not under MVC?
Long:
I have a blog engine running on MVC 3 on a Godaddy shared hosting account (IIS7/.NET 4). I've implemented a MetaWeblog interface to it so that I can use Windows Live Writer 2011 to post. Everything is generally working. My problem seems to be with Medium Trust and the XMLRPC gateway that MetaWeblog uses. I get a FileIOPermission error when attempting to write media objects to disk. The key error is:
Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
I'm sure it's the Medium Trust level that's causing this error because when I set my local IIS7 to medium trust level I get the same issue. Upgrading to high or greater trust level solves the problem. However, I can not change the trust level on a Godaddy shared hosting account (I don't want to pay for a dedicated server for a personal project so upgrading is not financially feasible).
Here's the "funny" thing. In the same application I have a file upload page that works perfectly on dev and production. I'm going to the same sub-directory in both places (well under the application directory root and with write permissions granted). Therefore, it seems the only difference here is the fact that one part of the code executes under MVC and another as part of XMLRPC (not sure what framework that is part of as I'm kind of new to ASP.NET development).
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Oct 25, 2010
I'd like to allow users to upload a .pdf file via the file upload control (if that's the best method), save the file to the db and then retrieve it so they can click on a link and open the .pdf they've uploaded. I've been looking for a tutorial on how to do this but keep running into methods of saving the file directly on the server in a directory, not in SQL server (using Linq and VB by the way)
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Aug 3, 2010
I have heard that saving connection strings and stored procedure names in web.config file of our application is not safe. It is a good practice to store the connection string in a config file rather than as a hard coded string in our code and if we need to change it,then it makes our job easier. how to protect our code in web.config?
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Feb 6, 2010
So I would like my solution to save in the same folder as the rest of my files. I am a win forms developer so web is new to me.
1) Is there any reason why I shouldn't do that for web.
2) Second how do I do that. I know that I can change the solution's saving location by changing ToolsOptionProjects & SolutionsProject's Location. However, I just want it to use the location of the new website I create and not that specification.
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Jan 20, 2010
I creating a page where our clients can view advertising images and then able to download the images in different file formats. So I need the images and the different download types all saved into the same row in the database so that when I go to display them on the page when they select a picture the right download links will be there. So here where my problem comes in, I don't know how to code it so that I can insert mulitiple file paths into the database at once. The images are saved in a table called images. The downloads are saved in a table called Image Downloads.
Here is the code for the page I have it coded to submit the images to the database but not sure how to add the rest. I have got three different sql datasources for each table not sure if that's the way to go.
[Code]....
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Apr 7, 2010
I'm trying to figure out how to save my XML file in the outside location.
I have a Main web app that uses an XML file as a datasource for one of it's pages. This XML file is generated manually by accessing a utuility page in the same app. I created a utility app that resides outside of the Main app ( it's on my C:/Inetpub/wwwroot) but it should save an XML file in the directory of the Main applicatoin. My utility works fine if I need to save to C:/Inetpub/wwwroot/XMLFiles) but I when I try to access the file at the Main application something like that:
objXML.Save(Server.MapPath("../../_MainApp/App_Dev/Marketing/Tests.xml"));
It gives me an error: System.Web.HttpException: Cannot use a leading .. to exit above the top directory. If I just type full URL it says that URI cannot be resolved.. How can I access that Tests.xml file to update it?
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May 10, 2010
I'm having a bit of trouble with knowing how I can save items from a list I have in Application state in the global.asax as- Application[""].
My controller basically takes in some user input, I then pass this to another classes Method as parameters it gets added to a list all the time. This data thats getting added to the list I want to store it, but without using a db. By using Application State. . I have been instantiating this class and calling its method to return the list of items but I dont think Application State is saving it.
Here is what I have so far. .
protected void Application_Start()
{
RegisterRoutes(RouteTable.Routes);
TimeLineInformation t = new TimeLineInformation();
IList<SWTimeEnvInfoDTO> g = t.getInfo();
[Code]....
The SWTimeEnvInfoDTO type has get and set methods for the data.
I am calling the application from a View as well. It works with a string
Application["AppID"] = "fgt";
and shows this once i read it from my view.
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Jun 22, 2010
i have build an MSI file for my project. Now what i need i am having some text boxes on my form. If i click on save i would like to save it as text file to the application installed folder.
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Mar 6, 2012
i have performance issue when accessing the web application which is datacentric & populaed in a grid
ijust came across storing the data in applicatin or seesion using datatable
i have cutsom paging & navigation causes lot of time though i display records on request
mean my page size is 75 records / page & at at time only 75 records are fetched i have a query accordingly with the total records of 6780 records
i need to optimize the performace so how do i save it in session or applicatin object & use it
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Apr 2, 2011
I m facing one problem which is related to Bitmap Image Actually My image is saved properly without iis server but when i run application on iis server then its give Exception "A generic error occurred in GDI+."
I m using this code-
Byte[] bytes = (Byte[])ds.Tables[0].Rows[r][1];
MemoryStream memStream = new MemoryStream();
memStream.Write(bytes, 0, bytes.Length);
System.Drawing.Bitmap origBMP = new System.Drawing.Bitmap(memStream);
System.Drawing.Bitmap newBMP = new System.Drawing.Bitmap(origBMP, 100, 150);
System.Drawing.Graphics objGra = System.Drawing.Graphics.FromImage(newBMP);
objGra.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
objGra.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
origBMP.Dispose();
newBMP.Save(Server.MapPath("ImageUpload\" + r + ".Jpeg"), System.Drawing.Imaging.ImageFormat.Jpeg); //exception throw "A generic error occurred in GDI+."
newBMP.Dispose();
objGra.Dispose();
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May 12, 2010
We have an ASP.NET 3.5 Web application in which we have faced the below issue:
The application is working fine but suddently at one point application URL prompts for the authentication. When we (the support team) checked the server, we were able to identify that the access was denied for some of the main files (like web.config, default page). When we enabled the access the application started working fine.
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Sep 2, 2010
[Code]....
Using above code, I got succeeded in printing PDF file through command line. But it runs the Acrobat Reader and opens Save dialog box.
In my case, I want to suppress Save dialog box and save the file on other location using c# coding. I mean I want to save a PDF file behind the scene.
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Jan 8, 2010
explain me in detail what are .tt files. In my company website they are using these tt files in an MVC application.
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Jul 29, 2010
I'm creating a web application using asp.net & WCF as 3 tier architecture, which is mostly looks like a social website. Users can register with the system and they can upload their profile images, documents, video clips etc. So, what i want to know is what is the best way to store those files? In the wcf side or web application side ?
Also I want to know that, if i choose web application side to store those files as set of folders, how it makes those folders shared and allow access to another different project (such as a desktop client need to upload files into that shared folder) ?
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Dec 11, 2010
How to upload files from ASP.NET web application to any web server(linux)..
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Nov 20, 2010
Currently I have a large number of xls files that are being shared over a network share. These files are have a copyright on them and have logic embedded in them to manage sales information. Because of the copyright, I can't extract the logic out of them and build an application.
I would like to know if there is a way to develop or purchase a control/app that will allow these xl files to be hosted via a website.
the web server would provide an html front end to manipulate the the xl sheet that resides on the server.
Users need to have the ability to modify the file and then save back their changes to the xl sheet (on the server)
I really don't want to give the users the option to SAVE AS either. That will cause the xl sheets to become decentralized and remain on everyones computer.
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