i have simple code. in which i want to check whether file is uploaded or not. but HasFile return false. I think every thing is ok but not working. how i will upload only images instead of "All Files"
[Code]....
We are going to start accepting resumes online but I need to know if the uploaded files will be virus scanned before I park them into the database. I thought this would be a server thing but the server admin and the security guy both said they didn't know. We already have a firewall and antivirus software, I just want to know how things work with native ASP.Net controls and not a product to try.
View 2 RepliesI was wondering if there is a method where i can check to see if the file that a user is uploading is either one of the following formats:
Quote:
.doc
.docx
.pdf
I currently upload like so:
PHP Code:
[code]....
Now is there a way i can check to see if the files are of the above formats and limit the users to only be able to upload files of this format?
i am uploading a file through file upload control , file size has greater then 4 MB, I have to give the proper alert msg to the user that file size exceeding the limit.how to do it , because at server side it is crashed on the IIS and not return to the server to check the file size validation.that how it is possible to validate the file size and give the proper alert messege
View 3 RepliesI should upload only the PDF files.How to validate?...
View 11 RepliesI am using the async file upload control to upload to a image file. I want the user to upload only jpg files. And for that I am checking the uploadedfile content type in server side, after the upload complets. I wanna check this, before upload starts. There is one javascript method
function startUpload(sender, args){}
but how to access the content type of the file selected by user.
i have a file upload control in my form.
How do i check if the user has chosen a file to be uploaded or not.
At present the selected file uploads however if no file is selected the script crashes...
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 RepliesHow to Compress uploaded file using upload control and send the file to our directory...(C#)
I want to send file up to 600MB
How can you upload the time that the file was uploaded to the database?
And how to show the results that are made that day?
"SELECT x,y,z aspnet_Upload WHERE Date = @Date"; ??
In asp.net, we have uploaded a .jpeg file and saved this as bitmap image using following code
HttpPostedFile uploadFile;
System.IO.Stream stream = uploadFile.InputStream;
using (System.Drawing.Image imgSource = System.Drawing.Bitmap.FromStream(stream))
{
System.Drawing.Image.GetThumbnailImageAbort myCallback = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
using (System.Drawing.Image imgThumbnail = imgSource.GetThumbnailImage(imgSource.Width, imgSource.Height, myCallback, IntPtr.Zero))
{
imgThumbnail.Save(filePath, System.Drawing.Imaging.ImageFormat.Jpeg);
imgThumbnail.Dispose();
}
imgSource.Dispose();
}
stream.Close();
stream.Flush();
stream.Dispose();
After upload, if we perfrom delete operation it throws error. We are following code to do so;
if (File.Exists(filePath))
{
File.Delete(filePath);
}
The exception says:The process cannot access the file 'abc.jpg' because it is being used by another process.
How to upload mutiple images with one file up;oad like in facebook or orkut using asp.net(VB).
View 1 Repliesi 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 am trying to check if a file already exists before uploading a file. I have the following code but it doesn't work whether the file exists or not.
[Code]....
Is there any way to check the size of a file that is being uploaded before its uploaded? Below i have code that works, but it doesnt check the file size until its uploaded.
[Code]....
I need upload multiple images and check before image size, I don't wanna use JQuery but if is necessary i can use it, some of you have or know one example.
View 1 Repliesi 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'm a beginner i work with visual studio 2005 and ajax 1.0
i have a web page with a control input i must to check the weight of the file but in javascript WITHOUT ActiveXObject !?
i have a fileUpload in my web page but it's not supporting all files eg:
when i browse xls file it's working for small size files but when i go for a little bigger files let's say 50-60k it won't work and will give me an offline web page, i have tried the input HTML on server mode and still having the same problem.
When selecting an image for an item in file upload control of ajax toolkit (AsyncFileUpload), the only files that should be displayed are ".jpg, .jpeg, .gif, .bmp, or .png".
I currently can see every type of file.
Is there a file upload control for ASP.Net which performs a client-side checksum calculation (CRC, MD5, etc) on the file contents and transmits the checksum to allow for server-side checksum validation?
I have looked through answers on several file upload questions, but did not find this feature mentioned anywhere.
What is the best way to restrict a file upload control to only accept video files only ?
View 3 RepliesI want to check the selected file size BEFORE uploading a file with the asp fileupload component.I can not use activex because the solution have to works on each browser (firefox, Chrome, etc..)How can I do that ?
View 3 RepliesIam using a file upload control for uploading files in my asp.net application. iam using the following code to impersonate the users who do not have permission for the files to upload. The code works fine for all the files, but it is not working for the files which are in desktop.
Code in .cs file:
System.Security.Principal.WindowsImpersonationContext impersonationContext;
impersonationContext =
((System.Security.Principal.WindowsIdentity)User.Identity).Impersonate();
//Insert your code that runs under the security context of the authenticating user here.
impersonationContext.Undo();
In web.config iam using the following:
<identity impersonate="true" />
I know the asp.net file upload control only allows users to select one file at a time, however i am looking for another way using asp.net to allow the users to select multiple files?
View 1 Replies
