Users of my C# web application can upload images. I have configured the max upload size in the web.config file to maxRequestLength="1024" and executionTimeout="180".
How can I check the upload size before uploading? (do you have examlpe or url?)
Another option might be to check the dimensions?...
Some web application allow the user to crop the image at client side. Do you have an example of this or url?
How to resize large size image like 3-4 mb of size to small size like 800px X 600px so that sie got reduce while uploading in asp.net ....
View 1 Repliesi am working on an ecommerce application, user will be uploading several images of a product, instead of stripping the size (i.e the KB or MB size) after uploading it on the server, i want to strip the size of image before uploading it to the server ( bringing the size from any thing over 30KB down to 30KB) i.e on the client machine itself and then upload it to the server. i understand that this requires a download on the client machine which makes me ask the following questions :
a. can i use a java control in dotnet since java control can be used on all OSes
b. is there any dotnet control that might be userfriendly to all OSes
I am using a sql server 2008 database and I am uploading images to the server using an asp.net webapplication. I have an image column that I use to store the images. I have chosen the database to store the image and not a folder on the server, because the database table will contain only very few rows. maybe close to 10 or 15 rows.
My question is, Do I have to reduce the size (dimensions and quality affecting size on disc in kbs) of the image in code behind before uploading it to the database or do I keep it as is. The total upload size permitted is 200kb. I am thinking that when the image size (size in kbs) is small my webapplication performance will not be affected when displaying them from the database.
I have written a website and let the user upload their photo. It also resizes the picture to 400 x 400 and crops automatically to the center part of the picture. All of this works good but each file is about 355K each for JPG and PNG file formats. I just tried GIF and it is 49K but the picture is grainy when saved this way. Is there any way I can get the picture to a smaller file size with keeping it at 400 x 400? I really thought PNG would be the way to go and was surprised by it being the same as jpg. I don't want to lower the quality either for JPG files.
View 1 Repliesi m uploading file using fileupload control. when i upload mp3 file with more than 4 MB size it gives error like page can not be displayed. how can i increase capasity of uploading file in my project.
View 6 Repliesi am trying to test to see if i get an error if i upload more than 3mb file size but instead i get the IE error (see below)
here is the code i have. - what i want is if the user try to upload more than 3mb file size display an error
[Code]....
[Code]....
I need to upload images from client to server as follows:
1. Server is passing the client a file name
2. Client is checking file extensins to ensure it's an image then issues a __dopostback to the server.
3. Server uses the FileUpload control to save the image on the server.
I have that all covered, but, if image is too large, the upload fails with the following error: 'System.Web.HttpException: Maximum request length exceeded.'
Is there a way to check file size on the client (without the use of ActievX which also errors out), before it is passed back to the server?
currently we are configured execution Timeout="1200" (The default is 110 seconds) and maxRequestLength="12288" (The default is 4096 KB)but some times users upload files above 12MB so we are getting "Maximum request length exceeded" error.we are checking the file size using client side javascript ActiveXObject object. but ActiveXObject only works in IE not in others like mozilla,crome,..Jacescript Code are
[Code]....
how can i check the file size before uploading process with support all the browser.any posiblities for checking file size before server side script/object?
I am trying to upload large videos(more than 1GB) to youtube from webpage. But youtube is allowing me to upload max 8MB videos. So I want to reduce the size of the video and then upload the reduced video  to youtube. So, how to reduce the video size.
View 1 Replieswhen i upload a pdf file on button click it shows no of pages in that file on a label.if the file size is more than 4 mb then it shows ===
This webpage is not available
The connection to localhost was interrupted.
in my aspx page i have a file upload control and one image component...i want to display the image uploaded in the image component..
View 4 RepliesI have a problem about image control. I am using VS2005 in Vista and suddenly uploading and retrieving image to a image control doest not work. I am working with this in Windows XP and all goes fine. After transfering it to vista, I can't upload and retrieve an image stored in the File System. My codes are all the same.
View 19 RepliesI have figured out that javascript cannot obtain the filesize of a to-be-uploaded file because it is a security risk and it is not allowed access to the clients HD. But I want to see if it is possible to get the file size before uploading the file, perhaps using AJAX.
So by looking at the requests, when you click the submit button on a form that contains a input type=file, the Request actually has the filesize inside of it, so you could therefore get the first request, cancel the request there, and send the file-size data back to the client without actually uploading the file.
I want to do this via AJAX so that it doesn't post back and also without clicking the submit button. It seems impossible to create a submit request with javascript because there is no way to get the file size. But is there a way to fake a submit? How does the submit button get the information? Is there any documentation on how the submit button actually works?
Although there are a number of floating menu tuts out there, I can't seem to find one that will simply let a div tag stay in one position with relation to the screen size. I have a div tag in the middle right of my page that must basically stay there even if the user scroll down.
View 1 RepliesI Used AsyncFileUpload(one of Ajac Control Toolkit Controls) to Uploading User's Image. this works well. But i want to change the image url of an image contorl to uploaded image url. how can i perform that? I put Image control in a Update Panel:
[Code]....
in C# code I wrote these:
[Code]....
But it does not work. Image is like Previous. Note that ImageOperations.ResizeFromStream() method resizes and saves the image to a specefic folder. actually I should trigger a Postback to Update the Update Panel but How to do that. I usedUpdatePanelNew.Update(); but it does not work!
How to upload images with some conditions
Like
size not gretr than 50 kb
with = 110px, height 140 px
etc..
Is there such a thing as an optimum chunk size for processing large files? I have an upload service (WCF) which is used to accept file uploads ranging from several hundred megabytes.
I've experimented with 4KB, 8KB through to 1MB chunk sizes. Bigger chunk sizes is good for performance (faster processing) but it comes at the cost of memory.
So, is there way to work out the optimum chunk size at the moment of uploading files. How would one go about doing such calculations? Would it be a combination of available memory and the client, CPU and network bandwidth which determines the optimum size?
EDIT: Probably should mention that the client app will be in silverlight.
I am creting the application in which i have droped some images to div.I want to set image position.The images which i m going to drop are dynamically binded to another div.The images I m dropping to div must not be overlapped,and after end of the last corner of div the next image should drop from first position but the image already at that position must not overlapped.
View 1 RepliesIs there anyway in .NET to get an image offset position in the webform?Javascript can get this information from the "offsetX" and "offsetY" values but are there anyway to get the same info in .NET?Or can I use javascript to catch the info and send it to the backend? Like creating a hidden input field with the data and then read the data from the code behind?
View 1 Replieslook at the picture, i want that image preview will come when i choose the file location before uploading to the database. is it possible?
EDIT: i found codes in other sites, they say those only work in IE, so it means currently, this preview function doesnt support FF? coz im using FF or sometimes google chrome.
I'am Developing a commercial website using vs2005 and sql 2005,where my users will download and upload wallpapers and ringtones,so my issue is, i got the coding for uploading ,
But the problem is it is storing the files two times,
If FileUpload1.PostedFile IsNot Nothing Then
Dim FileName As String = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName)
FileUpload1.SaveAs(Server.MapPath("Images/" & FileName))
[Code].....
I'm trying to craete an upload form using the following code:
[Code]....
when I click the 'Add imag' button I keep getting this error:String or binary data would be truncated.
The statement has been terminated.the 'Image' column in the SQL database is set to VARBINARY(250) and this exception still pops up even when I'm trying to upload a small 3kb JPG image, why is that?
I apply a watermark to an uploaded image.
After that I want to save the changes, but I am not able to delete the original file nor can I rename it because I get the following error.
The process cannot access the file because it is being used by another process.
I have already disposed all objects related to the "watermarking process".
It seems that the uploaded file is being locked by IIS for a period of time while I need to manipulate & save the file right after uploading.
I wish my user to have option of selecting multle image at once and upload them to site form there hard drive, somehing like on copy paste, and not to have 5 upload buttons and to look for each photo separatly.
I have thi esolved in zip file where user can zip in let say 453 photo and upload them to internet in single file where they are automaticli unziped but it would be much better to have option of selecting numerus photo i windows explorer and upload thm with single click