Web Forms :: Uploading And Downloading Files From A List Type?
Mar 2, 2011
I am using an ASP.NET FileUpload to upload files to the server. How to upload it to the rootfolder of my project. I want to add the files to a collection or list of files to be shown on the webpage in the form of gridview. Each file should have a link to itself in the list So that it could be downloaded by the click-if desired. The gridview will also have a delete column so that I can delete any of the corresponding file-as desired.
I'm new to this forum, infact this is the first forum i hav ever joined. I need some help urgently as i'm reaching the deadline of my project.I created an asp.net website, where administrator will upload files to SQL database which is connected to the webpage. From the web page there will be a download link to download those uploaded files. I have been successful in uploading files to the database. But nothing is striking in my mind regarding how to download files directly from database using asp.net C#.
i made a file uploader to folder named (Books) and i saved the name and the bath of the uploaded file to my DataBase but when i wanna download the uploaded file from the server ? how i make it ? by hyperlink ?
I am working on some project where I am needed to allow users to upload files, but only in pdf and .doc format. Now I know how to let users upload files, but I do not know how to check whether an uploading files is pdf and .doc or not. How could I know that? And how could I know the size of each file, for the file should be no greater than 3 MB?
Also, I have alloted a separate folder for the files that are uploaded by users. I have one page that displays the links to download the files in that folder. I needed to know how could I keep the track of the folder, for the files get uploaded every time? Or in other words, how could my 'downloads page' know about the files in that folder and create links for each file in that folder for the download? Also, if I create a link of a file for downloading purposes, will the file be downloaded when one clicks the link?
Ive created a Web App where it is possible to download an xml file from the server to the client. It works just fine except that the Save Dialog recognizes the file being dowloaded as of type .aspx and the name of the file as being the name of the page I' on. The page is called Download.aspx and it contains a button that when clicked executes the following code:
[Code]....
The save dialog appears and says:
Name: Download.aspx
Type: ASP.NET Server Page, 1,16KB
From: 127.0.0.1
If I download the file and open it it contains the correct Xml file content and nothing else, so it is working correctly. It just annoys me that it appears to the user that he is downloading the aspx site (and it shows up as such in windows explorer as well) rather than the xml file which is the actual content.
I used this sample to work around the issue we were having with large files. [URL] Unfortunately, when I attempt to download large files of 30MBs or more, the download times out and the user gets a partial download. It doesn't seem to be a consistant percentage of the download either. I attempted to download a 50MB file and got to 33MB. When trying a 30MB file, I downloaded 24MB.Below is my code.
if (File.Exists(strFilePath)) { fileName = System.IO.Path.GetFileName(strFilePath); Response.Clear(); system.IO.Stream iStream = null; byte[] buffer = new Byte[10000]; int length; long dataToRead; try { iStream = new System.IO.FileStream(strFilePath, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read); dataToRead = iStream.Length; //FileInfo file = new FileInfo(strFilePath); Response.ContentType = "application/octet-stream"; Response.AddHeader("Content-Length", iStream.Length.ToString()); Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName.Replace(" ", string.Empty)); while (dataToRead > 0) { if (Response.IsClientConnected) { length = iStream.Read(buffer, 0, 10000);..................
I want to view the existing files in a directory which is "~/Images". Now the code below works fine and it shows the files (with its name and other details) in this directory very well in a data grid. The name is a hyperlink, but when I click on it, it tries to view the file in "~" (i.e current working directory) instead of "~/Images" and therefore reports the server error as - "file not found".
Also, how to implement if I want the save as option when I click on the file, so that I could save it directory locally instead of viewing it in browser?
VB Code-
Imports System.IO Partial Class uploaddoc Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim dirInfo As New DirectoryInfo(Server.MapPath("~Images")) articleList.DataSource = dirInfo.GetFiles("*.gif") articleList.DataBind() End Sub End Class HTML (ASP.NET) Code - <%@ Page Language="VB" AutoEventWireup="false" CodeFile="uploaddoc.aspx.vb" Inherits="uploaddoc" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <%@ Import Namespace="System.IO" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:DataGrid runat="server" id="articleList" Font-Name="Verdana" AutoGenerateColumns="False" AlternatingItemStyle-BackColor="#eeeeee" HeaderStyle-BackColor="Navy" HeaderStyle-ForeColor="White" HeaderStyle-Font-Size="15pt" HeaderStyle-Font-Bold="True"> <Columns> <asp:HyperLinkColumn DataNavigateUrlField="Name" DataTextField="Name" HeaderText="File Name" /> <asp:BoundColumn DataField="LastWriteTime" HeaderText="Last Write Time" ItemStyle-HorizontalAlign="Center" DataFormatString="{0:d}" /> <asp:BoundColumn DataField="Length" HeaderText="File Size" ItemStyle-HorizontalAlign="Right" DataFormatString="{0:#,### bytes}" /> </Columns> </asp:DataGrid> </div> </form> </body> </html>
i have some problem on downloading file which file types are .doc, .docx and .pdf.
I have wrote the code for downloading when the button is click. the button can download these three types of file when click.
[Code]....
But, i have some weird condition. when i test in my local pc using the firefox, the downloading box popup with the file type detected. but when i upload the code files in live server and test the download button using firefox, the downloading popup but it cannot detect the file type.
therefore, i can proceed the download process using the firefox but i failed to open the files coz it dun have the file type.
How to hide a open option while downloading files from Web page developed using asp.net C#.
My Exact need is ,
1.I will download a excel from my webpage ,there it s giving option to Open,Save,Cancel.
2.But i dont want to give option to open excel with out saving .Because if they give i am getting version compatibilty errors.Those are unsolved over a month,so ve decided to hide the open button.
I have a small problem because when i click on my Button to export the excel data, i have a short waiting time (about 6 seconds) and i would like during this time displaying a progress bar. How to resolve this problem and implement the progress bar?
I want to secure folder of my website for example if some one do [URL] then it is giving access to mayur.doc which is in templocation folder of my website
I'm working on a project that requires the ability to let a user download a pdf from a static location on the server. I'm reading the instructions from this website, it's an old post and I notice they specify in an update that Microsoft's MVC framework has long since included and Action Result that allows the same functionality they discuss thus rendering it obsolete, I've looked a bit online but haven't been able to find any resources that discuss this built-in functionality.
I got file names in an ArrayList say my _files. What i want to do is that i want to download files in zipformat when an user presses a back say "download now".
I have ASP.NET page with an iframe on it for displaying some pdf reports on this page. When user select the report type from dropdown, I add the needed for report data into the ASP.NET Session and change the attribute "src" of the iframe to .ashx module address which generates the .pdf report.But if Adobe glug-in for viewing .pdf files in browser is not installed, browser proposes to save report file and name of the proposed file is "HandlerName.ashx".But I want to make the browser proposed to save the file with the name "Report.pdf".
I'm working on a reporting script which runs a number of reports (pdf) on button click. The reports are created on the web server then I'd like the user to be given the option to download the files. I have worked out the script for downloading one file from the server. But I'm not sure how to download multiple files? (there will probably be about 50)
After I run one report I redirect the user to a http handler script.
Response.Redirect("Download.ashx?ReportName=" + "WeeklySummary.pdf"); public class Download : IHttpHandler { public void ProcessRequest(HttpContext context) {
I am trying to make a web application which copies the existing functionality of a windows forms application using Visual Studio 2003. This windows application takes multiple (I am talking at least 30) text files and joins them together into one text file which can then be feed into a Mainframe system in the correct format. I have written web applications before that uploads images and pdfs but the key thing is it was always only one or two files at a time, so this was easy to do with the HTML fileupload control.
What I want to do is to be able to open a directory on the local computer and either automatically, or give the user the chance to multi select (I dont think this is possible) all of the 30 or so files they wish to upload. Once its been uploaded I can do the processing to join the files and create my new one etc. All the examples I have seen on the web, you have to select the files one by one to add to a list box and then they can all be uploaded but this wont be acceptable to my users...
I need to upload files from one site to another and I thought about using the WebClient class and FileUpload method from the System.Net namespace. I read the MSDN documentation and it seems an easy task to achieve but something is going on wrong. For now, I am only testing with the following simple code to upload a file to a test web server in our office which uses HTTP port 8080 instead of 80:
[Code]....
The code above issues the following exception: "The remote server returned an error: (404) No Found." I have made sure that both paths are correct.
Also, does the UploadFile method saves the file physically in the hard disk (I suppose so) or does it load it into the server's memory?
I have a .aspx web page and a .asmx web service.I want to upload a file from this web page to my web server so that I can call some web services to process the file, e.g. convert uploaded doc to pdf file.1- how to upload big files?2- how do I process these files automatically? like when i upload on youtube, it automatically does some file format conversion. how can i do this.3- how to make sure that i dont make my user wait on this page , but send email or some type of alert when processing is done.
I have a webiste that is on a shared host environment. I would like to be able to upload pdf files to the site and then somehow link them to a client record in the database.
I created a HttpHandler for downloading files from the server. It seems it is not handling anything...I put a breakpoint in the ProcessRequest, it never goes there.
public class DownloadHandler : IHttpHandler { public void ProcessRequest(HttpContext context) { //download stuff and break point } }
It never stops there, as mentioned. I also registered it in the web.config.
I am not sure about the path part of that entry. What do I have to enter there? I am downloading txt files, but the URL does not contain the filename, I somehow have to pass it to the handler. How would I do this? Session maybe?
I am a very new programmer.. A website is providing a lot of zip files that i needed. It will be updated/uploaded new zip files weekly. What I need to do is write a program/script to do auto downloading from the web weekly.. for example, this is the web link
http://www.google.com/googlebooks/uspto-patents-applications-yellowbook.html ( you can see a lot of zip files there )
so my question is What script i have to write(i got no experience in writing any script, so what can you suggest?) so i can download the zip file programmatically? then how should i make it to download the new zip file uploaded weekly?Is it i have to use DOM...unix? if yes, i will do some research on tat to make it work.
i created a website that allows the user to download a file from a ftp server.
i can get the file to download perfectly to a specific location on the clients pc but
my problem is that i cannot get the file to download to the default path or the browser or prompt the user to choose a location to save the file.
is there anyone who knows how i can either prompt the user to save the file in a location or even get the file to download to the browsers default downloads path
