InnerException: System.AccessViolationException: Attempted to read or write protected memory.This is often an indication that other memory is corrupt.at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.MoveNext()
I am getting this exception few times a day in our website.The page that create PDF file from the uploaded image files result in above excption.
How to add watermark to uploaded doc (pdf or image files).The workflow will be-User register at portal -> user upload some required document (like financial proof or some kind) -> When saving them to database -> a watermark (predefined by admin at backend in admin panel as - Logo or Text) will be added to those uploaded document on top and bottom or wherever possible on the uploaded document.
So in future when admin views the document uploaded by him in his account, it will be displayed with stamp or the watermark. It will prove that the document is uploaded to server by user or whatever. Now, this we have found way to do in jpg, but in case of pdf its quite tough..
I have an asp.net (3.5) web application.In one page i use an unmanaged C library (a simulator) that produces a set of results based on some input. When i've set the debug="false" in web.config (Release mode) that call will result in a System.AccessViolationException. If i am in the debugger, or at least set debug="true" in web.config, that exception will never appear.Because of the nature of the bug i placed the call inside a try-catch to log the exception and then the exception does not appear!
Is there some magical work on protected memory space when in debug mode and/or in a try-catch?
i am using fileupload asp.net controll so how i create image preview before image uploaded
View 6 Repliesi did this code to upload file and displaying it in the image:
[Code]....
the code works good. the file is uploaded under my website here in the solution explorer: now after uploading the file,the newly uploaded file is shown in the image(since there were a few more images present in the same location but they were not shown by the image) i used this url to the imageurl:
ResolveUrl("~")
which returns me this:
WebSite1
now my question is why the newly uploaded image is shown in the image? there were several other images present at the same location and even i have not used something in my code that tells to show only the newly added image from my website into the image.
I use to store image in bytes and able to convert it to system.drawing.image but not sure how to render it on page
View 2 RepliesI create a new class FileUpload for my web page. In onload method of page, i create a new object of that class and after file uploaded, i fill some information of file to that object(name, size, extention,type). I create a method in class to delete that file. But When i use it, the error "The process cannot access the file 'D: emp25.jpg' because it is being used by another process." is appear. I thinks the object is using the file uploaded and i can't delete file.What's the problem and how can i solve it? I need to delete file.
View 5 RepliesUsers can upload files to the server, which are stored effectively forever.
A few of my ideas involve logging every upload, but then the files are usually referenced in html which isn't easy to track.
Files can sit unused but still be referenced. I could do a fuill text search on these, but that's pretty brute force.
My system Uploads files to an IIS server and then i manipualate them and after finished doing every thing, i need to delete the original file, the problem is that the IIS "grabs" the file and i can't delete it, when i close the procces i can delete it manualy from the server, but until i close the procces i can't even do that...
I'm using:File.Delete(Server.MapPath(OriginalFileVirtualPath)); to delete the file.
p.s. for now i'm using the .net server, not a full active IIS, but i don't think that the problem is over there...It even make some sence that when i upload a file to the sever, it won't let to delete it strate away, but i'm sure there is a work around...
my question is related to this topic :
http://forums.asp.net/p/1626458/4186694.aspx#4186694
I added another fileUpload in the Sending E-mail Method as following:
if (FileUpload1.HasFile && FileUpload2.HasFile)
{
FileUpload2.SaveAs(Server.MapPath("NewFolder1") +
"/" + User.Identity.Name.Substring(7) +
"FB.gif");
FileUpload2.SaveAs(Server.MapPath("NewFolder1") +
"/" + User.Identity.Name.Substring(7) +
"SP.gif");
"How can I use these two files that uploaded (Server.MapPath("NewFolder1")
) as attachments in the Attachment Method??"
I tried with this code:
message.Attachments.Add(new System.Net.Mail.Attachment(Server.MapPath("NewFolder1")));
My asp.net app has file upload capability, I need to store uploaded files (ie. .tar, .zip, .doc, tif .. etc) into a dataset before they being stored into mysql db..
How to store uploaded files into a dataset?
I am getting this exception on my staging server (IIS6). The same code runs well in my local Visual Studio's ASP.NET Development Server. Here is my classes in question. It looks like the proxy returns null when retrieving the SiteID
public abstract class ApplicationController : Controller
{
private IRepository _Repository = new Repository();
[code]...
In my website I have upload control that I use to upload files and all the links of uploaded files saved to sql database on the server of hosting company.then I have a grid view filled from database with the links of the uploaded files, how to delete some files that I uploaded to the server by code from the gridview
View 2 RepliesI'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?
View 2 RepliesShowing thumbnail of uploaded media files (pictures, videos etc..) I tried to extract thumbnails from thumbnails.db using Microsoft Shell Controls And Automation (Interop.Shell32.dll). I followed [URL] PROBLEM: I tried it in WPF application and it worked. Then i used the same code in ASP.NET WebForms website and it works for pictures but doest not work for videos. I also tried the same in clean console application but it doesn't work as well. But in wpf it works! the same assembly. Assembly is from Window 7, but neither WinXp's Interop.Shell32.dll works for videos in websites. It throws an exception NotImplementedException whenn I call IExtractImage.Extract(ref IntPtr phBmpThumbnail); Can you explain this behaviour? [URL]
View 1 RepliesI just inherited an ASP.NET WebForms web application that I was tasked with refactoring. One of the features is a file upload and while debugging I noticed that as soon as a file is posted to a certain page/handler, it is automatically uploaded to the root directory of the application. The file is then moved to the proper location. I can't seem to figure out whats causing this automatic upload of the file. Is there something I'am overlooking in ASP.NET WebForms that allows this to happen? Is it an IIS configuration or something?
View 1 RepliesI recently published my website locally and then uploaded the .aspx files to the root directory of the host server and then uploaded all of the compiled files into a new "bin" subdirectory. But, when I accessed my website through my domain name, I got an error message that said that my Default web page has not been compiled.
The service that I am using is an ASP.NET hosted server called JodoHost. But I noticed that, besides the new "bin" subdirectory that I put all of my compiled files into, there was also subdirectories named aspnet_client, cgi-bin, and images. I assume that my problem stems from not placing my compiled files into these. Is this correct? If so, what should I be placing into which directories?
Now I am able to upload files in folder and showing in gridview. but suppose i am going to upload new files so that time in page previous files is showing in gridview. i want that when i am uploading new files so after that uploaded new files only should show in gridview old files should not show in gridview.
View 1 RepliesI'd like give unique name for uploaded files in a folder.
I know we can a uniqueidentifier to file name but I think it isn't a good way.
I have a page that loads a two different files that the user uploaded during page_load. The code is an example I used from the aspsnippets site. The files are stored in a server folder while the location is saved in the database. The code below gets all files in the folder and binds them to a gridview.
Dim filePaths() As String = Directory.GetFiles(Server.MapPath("~/Uploads/2012/emp/"))
Dim files As List(Of ListItem) = New List(Of ListItem)
For Each filePath2 As String In filePaths
files.Add(New ListItem(Path.GetFileName(filePath), filePath))
Next
gvEmp.DataSource = files
gvEmp.DataBind()
What I want to do is to get only one file per user as the fileID along with the location is saved in for every user. I ran a query to get the fileLocation and pass that location stored in the database instead of the current server path but I can't figure out how I would do it.
I've got to following function which is called to change the resolution of an image. I want to do this so uploaded image with for example 300dpi will be modified to 72dpi (for web). This question is related to another question here on SO where i'm working on.
I'm creation an extension method for this to be able to use this function on more places in my application, instead of only when uploading new files. (See above mentioned question)
public static byte[] SetDpiTo72(this byte[] imageToFit, string mimeType, Size newSize)
{
using (MemoryStream memoryStream = new MemoryStream(), newMemoryStream = new MemoryStream())
{
memoryStream.Write(imageToFit, 0, imageToFit.Length);
[Code]....
I have code that is successfully uploading images to a folder on my website with the code below.. what I would need to do next to actually display that image on the same .aspx just after the actual upload?
Private
Sub btnUpload_Click(ByVal sender
As
Object, _ByVal e
As System.EventArgs)
Handles btnUpload.Click
Dim destDir
As
String = Server.MapPath("./images/Upload")
Dim fName
As
String = Path.GetFileName(uplPicture.PostedFile.FileName)
Dim destPath
As
String = Path.Combine(destDir, fName)True
lblUploadSuccessful.Text = "Upload succeeded."
End
Sub
I am trying to put together a page where files uploaded by a specific users would be listed in a bulletedlist and I am stuck. Here's the rundown:
Users login, they upload files which are saved to disk in the user's own directory. All the file's information, including the path, is stored in a SQL database.
The user has also its own page, where there is a bulletedlist (set as a hyperlink) that gets the filename from the SQL. However, the path to the file is incomplete.
The file is saved to the site's directory structure: C:WebsitesSiteUploadsUserFile.pdf. However, the hyperlink shows[URL]
Can anyone point me to the right direction? Below is a snippet of the upload method and the retrieval to build the bulletedlist.
[Code]....
[Code]....
How can i upload a image in specific folder of server using jquery .... i have many folder under image directory and i want to choose the folder at the time of uploading.
View 1 Repliesm using asp.net 3.5 and c# on my website.Here is myquestion:I have an upload button and asp:Image on a page. An user can upload an image from his computer and that image will be displayed in the asp:image. But before I display the image, I would like to check the width and height of the uploaded image. How do I do this?
View 3 Replies