Web Forms :: How Can Delete The File Uploaded In Web Page
Sep 15, 2010
I am writing a simple web page that users can upload an image file. After the file is uploaded, Users can fill up other question in the web page. then users click the submit button to register them and the file is uploaded previously is move to special folder and is saved there. Know i want to delete the uploaded file if the user upload the file but dont click the submit button and close the web page. because i dont need the file uploaded until the user is not registered.I use Session_End event but i dont know why it dont work.
i'm developing an application written in C#, and it uses a FileUpload control but i want to add some lines which the user can delete the file that has uploaded to the server. How can i do that?
Suppose after Uploading file,i want to delete a particular file ,for that i have added a link, that calls a Web Service method to delete file stored in DataBase. That link is added throug JavaScript in OnClientUploadComplete JavaScript function. And this Delete link calls another JavaScript function that in turn calls Web Service method. But that delete link should contain some specified arguments against which file has to be deleted. I am confused how to pass that argument to dynamically created Link.
I 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.
Below is the code for "Upload" button when uploading any file:
if (contenttype != String.Empty) { if (File.Exists(Server.MapPath("~/Folder/'" + Txt.Text + "'/") + filename)) { LMsg.Visible = true; LMsg.ForeColor = Color.Red; LMsg.Text = "File name '" + filename + "' already exist. Please change the File name to save this file";
[Code] ....
File upload control allows maximum file size is 4MB. If file size increase to 4MB it shows error page like "the page can not displayed".
I want to increase the size of uploaded files to max 10 MB not more than that. If file size increase to 10MB, it should show message.
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
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...
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
I wanted to customize/Restrict the File Uploader control as follows:
1. To restrict Users to not to upload some type of file like.exe
2. To restrict the user to a specific size limit.
I also wanted to be able to display appropriate messages to the user if the abover restrictions are violated.
Can I use the validations control to achieve the above goals. As I am already using these controls to display appropriate messages to the user in case of wrong/invalid data.
Actually i am trying to storing the uploaded file into database but when i run this codes:
[Code]....
I got this error: " Incorrect syntax near the keyword 'File'.Incorrect syntax near the keyword 'File'. " can anybody tell me why this error came out?I tried toi change my connection string in web config,but it still showing the same error each time i run it in my local.
I would like to use HTML input file type in my aspx page to allow user to browse for a excel file and then read the content of the excel sheet programmatically.If I want to read the excel sheet I need the full path of the file to connect to the excel sheet using asp.net.I do not understand how can I get the full path of the file.I know I can get the filename using postedFile.FileName property.But I need the full path of the file.
When I upload a file through a web page to a directory on the webserver the file does not inherit the parent folders rights. So when a user tries to access the file from the local network after the upload they recieve access denied. How can I set the rights on the file after the upload or get the rights to set correctly when the file is uploaded. The file uploads correctly but only has the rights of Network service, system,internet guest account and IIS_WPG. I need it to have a specific user or everyone which the parent folder has and is set to propogate permissions.
I was so proud because I researched saving files and figured out how to extract the file name from what might be the full path. However, this doesn't work as I had expected. I still get the exception!
When inserting a binary file do you know what will be the correct content type for extensions like .txt or .gif or others not in your sample? Is there a list of correct content types?
im tryin to upload files to the database using the FileUpload. the upload take place. when i download the file again ( word document, excel document.. a text document (.txt), a winzip file) , it turns that the file is corrupted and cannot be opened.. an image file or an mp3 file doesnt present this problem. my application is developped usin vb.net 2010 and sql server 2005 as the database..
I am working on the application that allows user to upload a file (from their local machine) and store the uploaded file in database.Then,the content of the file (such as ContentType,FileSize etc)can be view in a DetailsView control.
