I have tried many methods to deserialise this xml from URL. But none were successful due to what I believe is an encoding issue.
If i right click download, then deserialise it from my C drive, it works fine.
So i decided to try downloading the file first, and then process it. But the file it downloads via code is in the wrong encoding as well!
I dont know where to start, but im thinking maybe forcing a UTF-8 or UTF-16 encoding when downloading??
Here is the download code:
using (var client = new WebClient())
{
client.DownloadFile("http://example.com/my.xml", "my.xml");
}
How to download a file from a URL in C#?
Image of file when downloaded
Try this
using (var client = new WebClient())
{
client.Encoding = System.Text.Encoding.UTF8;
client.DownloadFile("http://example.com/my.xml", "my.xml");
}
The file was infact in a gzip format. Despite it being an xml url.
My connections must have been accepting gzip so the server responded with such. Even though i tried a few different methods with different variations. (Downloading/String streaming, parsing string from URL etc)
The solution for me, was to download, then uncompress the gzip file before deserialising. Telling the server not to send gzip didn't work. But may be a possibility for some.
Related
I want to save a file from a http link to the local drive just temporarily in order to access it, this one is working so far and I'm getting the data but a need to write this data to a local file, for example to C:\Windows\temp\test.text, this file should be deleted afterwards.
WebClient client = new WebClient();
string url = "http://www.example.com/test.text";
var file = client.DownloadData(url);
could any one help me on this, thank you!
You cannot write a file on client machine due to security, Any program executing in the browser executes within the browser sandbox and has access to limited features like printer, cookies, etc.
You can write the data to file as a Response object to the client's browser. The Client has the choice of whether to save it or not to his machine.
I'm trying to download files using a list of urls. how would i go about downloading the files if your urls only end in the page where you would normally click the download button(it has a redirect and wait on the download also)?
i havent actually managed to get further than downloading a file using
but i know this wont work because i wont be able to know the filename and ill have to save it to a file in a config location
using (WebClient client = new WebClient())
{
client.DownloadFile("https://github.com/Hellzbellz123/downloadme/raw/master/TestAddon.7z", "testAddon.7z");
}
I intend to build a backend then plug it into a windows forms app for a gui because im really new to C# and programming in general
Do you mean that you don't know the filenames so you don't know how to save them locally?
If so:
//with 'url' as string
WebClient client = new WebClient();
Uri uri = new Uri(url);
client.DownloadFile(uri, uri.Segments.Last());
It takes the URL and splits it by every slash - the last item in the list is the filename..
EDIT: Improved, thanks to Jimi
That method won't work for links like "[..]/download.php?fileid="
For those links take a look at this
On the server side, I have the following simple statement which includes the contents of the actual file in bytes (AttachmentFile).
MemoryStream stream = null;
stream = new MemoryStream(attachment.AttachmentFile);
All I want to do is to send the file to the client to open it up in a web browser. I've searched the web, but cannot seem to find the right solution.
Can someone please give me some code to accomplish this?
I think this is a quite good article about transfering file with WCF:
http://www.codeproject.com/Articles/166763/WCF-Streaming-Upload-Download-Files-Over-HTTP
Sadly I cannot add this message as a comment.
Hell guys,
I'm coding in csharp to send an email which contains a .zip file (has htmls and css inside). When I check the mail recieved, In fact, instead of the .zip file, the attachment becomes a txt file and has:
FILE QUARANTINED
The original contents of this file have been replaced with
this message because of its characteristics.
File name: 'xxxxxxx_Result.zip'
Virus name: 'Large uncompressed size'
The exchange server has blocked the zip file..I'm using CDO to create and send the email.
I tried using the code to send a mail with a zip file generated by WINZIP, there was no problem, then I tried using outlook to send a mail with the zip file generated by my code(I use sharpziplib library), the problem occured...
How can I do to send the attachment correctly? Many thanks in advance!
Allen
I encounter similar problems sending email on our network. I've found that using an alternate compression format, such as 7-zip (.7z), is adequate to get my content through the filters. This could resolve the issue if the block is not due strictly to size.
Looks like your mail server or spam service have removed your attachement and replaced it with the txt file, it sounds like your code is fine and you need to speak to an admin regarding the mail filters and send size quotas!
For anyone facing this problem, here is a solution. You have to explicitly set the file size for the zipentry.
ZipEntry newEntry = new ZipEntry(fileName);
newEntry.DateTime = DateTime.Now;
newEntry.Size = fileData.Length; // setting data size
i have a URL and when i load it up in a browser it recognizes it as a csv file and pops up excel "do you want to open". I want to do this programatically so i can have a winforms app use that url and parse the csv file directly.
what is the quickest way to do this?
EDIT: i tried using WebClient and i am getting the folowing error:
"The remote server returned an error: (500) Internal Server Error."
I don't see why something like this wouldn't work (in C#):
// Download the file to a specified path. Using the WebClient class we can download
// files directly from a provided url, like in this case.
System.Net.WebClient client = new WebClient();
client.DownloadFile(url, csvPath);
Where the url is your site with the csv file and the csvPath is where you want the actual file to go.
If you have a WinForms app, you can use a System.Net.WebClient to read the data as a string.
It will read the entire csv file as a string, but you can write it out or parse it at will.
If you want to just whip something together I would suggest using a scripting language and some bash. Just use wget or something similar to get the file and some scripting language to parse it. You could even use php to parse it once you had the file because I know that php has the following function which is very nice: http://php.net/manual/en/function.fgetcsv.php
I would suggest doing it this way because it is easier, this will certainly let you parse it easily enough though I don't know what you want to do with it from there but the worlds your oyster.
The following code works for me but I am running Open Office. I have not tested it with Excel.
The hacky bit is to rename the local copy of the file to *.xls so that Windows will launch Excel by default, if you leave the file extension as CSV, Windows will launch Notepad by default.
String url = "http://www.example.com/test.csv";
String localfile = "test.xls";
var client = new WebClient();
client.DownloadFile(url, localfile);
System.Diagnostics.Process.Start(localfile);