I'm mix up between webclient.OpenReadAsync and webclient.DownloadStringAsync? Can anyone explain clearly for me ? What are the difference between them? In addition, may i know whether webclient.OpenReadAsync got download the file or just open and read the file only without download to other places?
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I run a loop that downloads a lot of smal files from another website
try
Loopstarts
result = runData()
loop ends
catch ex1 as exception
End try
private function runData() as string
Dim wc as new WebClient
Dim str as string
try
str = wc.downloadstring(filePath)
catch ex2 as exception
return "Nothing"
end try
wc.dispose()
finally
return str
end function
THE Problem is if the file is not found in the RunData function I get 'Thread being aborted' error which stops the not only the function RunData() but also the loop is running in, so I get an error in ex2 as well as ex1. But I want the error to be captured in ex1 and stop, and not effect the loop.
I have read that you need to use Response.End to close the thread or not to capture the 'threadbeingaborted' expception.
BUT how do you do the response.end with a webclient??? (IN vb.net , asp.net 2.0 version
I'm using a third party url to determine the location of site visitors based on IP address.I use WebClient.DownloadData() to get the information returned by the url which is a one word answer e.g. as per http://api.hostip.info/country.phpOnce I have detected what country the user is in I want to either A) keep them on the current site and store the country in the session or B) redirect them to another countries site.What I'm worried about is WebClient.DownloadData() hanging so the user is waiting for ages and can't use the site. I'd thought about using DownloadDataAsync but this dosn't seem to be a solution for me as I don't want them to do anything till I find out the country (also seettp://stackoverflow.com/questions/271767/webclient-downloaddataasync-is-freezing-my-ui)Is there a way I can set a timelimit on my call to WebClient.DOwnloadData e.g. if it hasn't returned in 2 seconds,
View 1 RepliesI am currently using C# and the webClient class to downloading and uploading images, data, see code below
[code]....
This works fine for a direct internet connection, but fails through a proxy server.
And giving the error "The remote server returned an error: (407) Proxy Authentication Required."
I have tried using the default credentials in the credentials property
[code]....
I am downloading a file from remote server by using the following code.
[code]....
If we paste the remote url in browser then it is downloadding the file without any error/warning.
It seems that webclient supports PUT and POST uploading. Is there any difference?
View 1 ReplieswebClient.postme
Can't get WebClient.DownloadData() to work
I've got a site that users can use to check in and out documents. To check out a document, the user slects a file from a list, and clicks 'check out' . The document is taken from a 3rd party source control tool and placed in a dedicated directory on the server. Then, the file needs to be copied from this directory to a client directory the user has specified.
Copying to the Server is no problem.
I'm trying to use the WebClient objects DownloadFile method to write to the clients directory, but I keep getting "Access to the path '<path>' is denied.". I've set the UseDefaultCredentials flag to true, but no joy.
I'm obviously missing something, but I'm not sure what.
Anyone familiar with the webclient.downloadfile method method? I'm looking for a way to help two users download files from an internal secure website. Right clicking File Save As, and then browsing to a folder is "too many steps". So, I'm curious what this method can do to reduce clicks and/or automate the download process.
View 7 RepliesI'm using WebClient.DownloadString("http://www.website.com/Default.aspx?fltdte=01050402);Part of data that is returned I want to put again in above url for query again and again if data returned satisfy conditions..I want to do multiple webClient.DownloadString.How to do that?
View 2 RepliesTrying to do basic webclient data pull in C#, and the methods are not available in visualstudio, and the code is not compiling.
//snip
WebClient client = new WebClient();
byte[] resp = client.DownloadData(url);
//snip
Error 1 'System.Net.WebClient' does not contain a definition for 'DownloadData' and no extension method 'DownloadData' accepting a first argument of type 'System.Net.WebClient' could be found (are you missing a using directive or an assembly reference?) C:UsersMichaelDocumentsVisual Studio 2008Projectssearch2search2MainPage.xaml.cs'm doing this in a c# file for a XAML/Silverlight project, but can't imagine why that would make a difference. I can not find any reference to this issue on the web, and I had something similar to this working last month, but in a regular ASP.NET page, not in a Silverlight app.
I have an objective to transfer some files which can be pdf, jpg and xml from one location to another. I am creating a handler based API for that. What could be the best approach for doing it? Should i return a byte array so that the client can pick the byte array and convert it back to file? Also the max file size I need to handle is 18 MB, so i have to make sure that the sizes are properly handled. Should I do an asynchronous transfer for that?
View 1 RepliesNot sure if any of you are familiar with hMailServer, however, I am attempting to automate account creation / editing / deletion by using the WebClient class to interact with hMailServer's PHPWebAdmin.
The problem I am facing is that I can't seem to retrieve the index page (http://localhost/hmailserver/index.php) after posting the login credentials.
Here's my code so far....
[Code]....
And here's the HTML for the login form...
[Code]....
what I'm missing / potential problems? Should the 'url' be the page with the form of which I wish to post data to, or the page I want returned? I've tried setting it to "....hmailserver/index.php" or to the status page ...hmailserver/index.php?page=status" but the response returned is always the HTML of the login page.
I am using the code below to download multiple attachments from a TFS server:
[code]....
However, there are a couple of problems with this approach:
The Thread.Sleep() is locking up my Form. I still need to make my own Thread or use BackgroundWorker. (I would like to avoid this as much as possible)The DownloadFileCompleted event is being triggered after ALL files has been downloaded. I don't know if this is a side-effect of using
System.Threading.Thread.Sleep(1000);
Is there a better approach to download files one at a time using WebClient.DownloadFileAsync?
My question is similar to http://stackoverflow.com/questions/194579/how-to-detect-when-a-user-has-successfully-finished-downloading-a-file-in-php but I have to do the same using IIS, ASP.NET and C#.
None of the methods in the HttpResponse class provide feedback if the data was sent or not, TransmitFile just does its job (or not) and does not provide any means of knowing the result.I was thinking of using the .Filter property but then again, the filter is based on the HttpResponseStream which does also not provide any feedback.
I need upload a file from a website to another website using WebClient or HttpWebRequest.
View 4 RepliesAs title, how to specify additional form parameters when uploading file using webclient?
View 1 RepliesI am downloading a file from a remote location to my local machine. The paths I am using are saved in web.config and are in following format:
<add key="FileFolder" value="Files/"/>
<add key="LocalFileFolder" value="D:REAL" />
the code I am using to download is:
CreateDirectoryIfDoesNotExist();
WebClient webClient = new WebClient(); [code]...
When i deploy it on the server; and run my program, i get a message saying that download has completed successfully. But the problem is that the file is downloaded on the server machine in the filefolder (LocalFileFolder). I want it to be downloaded on the local machine. What is it that I am doing wrong?
I am not sure why the callback methods are not fired AT ALL. I am using VS 2010.
static void Main(string[] args)
{
try
{
var url = "some link to RSS FEED";
var client = new WebClient();
[Code]....
I keep trying to upload data into my website using the code behind but I fail...
here is the code:
[Code]....
I have an aspx website and I'd like to upload a file to it. The file is being processed later, so I need to support some extra information with it.
This is the website I have to far:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Upload.aspx.cs" Inherits="ABC.Web.Upload" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="Form1" method="post" enctype="multipart/form-data" runat="server">
<input type="file" id="File1" name="File1" runat="server" />
<input type="text" id="FileId" name="FileId" runat="server" />
<input type="submit" id="Submit1" value="Upload" runat="server" />
</form>
</body>
</html>
This (and the code behind) works very well when using a browser and clicking through the form. But I want to upload the file using the WebClient from C# code. I don't have to use the WebClient. I can also modify the upload.aspx to suit me, there is no requirement that it works from a browser, but this is the only example I've got working.
Looking at fiddler (I just started using it, so I probably have missed it) I could not figure out how I would create such a request from code.
At the moment when using the WebClient I am specifying the address and the local filename. I have a breakpoint in the code behind in my website but the File1 and FileId are not set (as expected).
How do I have to modify the website and how do I have to use the WebClient to get the upload working?
EDIT: Just found out about the Request.Files, that will give me the file, but how about the other fields?
So here's the deal. I'm creating a spider bot for a website that scans all the product pages and records the product data. I'm using C# and the WebClient library to download the HTML string. The site I'm crawling must be specially made because the HTML that is received from WebClient.DownloadString() is different than the HTML that I get when I view the source of the HTML when visiting it on a browser. This seems intentional because the only info I can't get is the price.
View 1 Repliessee this page:
http://karusela.net/2243_%d7%94%d7%a1%d7%9e%d7%95%d7%a8%d7%90%d7%99-%d7%94%d7%90%d7%97%d7%a8%d7%95%d7%9f.aspx
I am trying to POST automatically data into the page using that code.
[Code]....
But it won't work.
I have two questions . The first is how do I make this work. The second, hoe can I retrieve programatically the whole INPUT names of the form of a page?
I am trying to use a WebClient to get the content of another webform in my project. I am using a WebClient because I want to do this asynchronously, so if there is a better way to do that, I am open to it.My webclient, however, is erroring with the "Illegal characters in path" error. Looking at it in the debugger, I see that this is the URI string I am using:
"PortfolioDetail.aspx?CCSG=True&Open=False&Plcmt=2008-Aug "
I don't see any illegal characters in it... what am I doing wrong?
I'm trying to use a java servlet in a 3rd party tool's web interface (CA service desk) to invoke it's download file functionality using a webclient in vb.net. The trouble is the text stream from response is markup and not the acutual text file stream.
It's like the page is redirecting to another page which actually presents the file for downloading. I have no idea what the redirected page URL is.
Is there a way I can process this redirected page in order to get at the download using a system.net.webclient?
