webclient

WebBrowser Control download file in session

由 落爺英雄遲暮 提交于 2019-12-09 11:45:05
问题 I'm using WebBrowser control to navigate through a login page and download a file. Since I can't find a way to manage the download automatically with the control I'm using the WebClient class to try and achieve this. Problem is that since the WebClient isn't in the same context/session as the browser all i'm downloading is the Security Error screen. Any ideas on how I can pass the context of the WebBrowser session to the WebClient ? 回答1: It should be simply a matter of emulating the cookies

Is there a way to do a PUT with WebClient?

由 时光总嘲笑我的痴心妄想 提交于 2019-12-09 07:27:18
问题 with the WebClient class in .NET 4.0, is there a way to do a PUT? I know you can do a GET with DownloadString() and a POST with UploadString(), but is there a method or property that lets you do a PUT? Thanks. 回答1: There are overloads for UploadString that let you specify the method. For example, this one takes a Uri , a string for the method, and a string for the data. 回答2: You can use webclient.UploadString(urlwithparams,"Put","") url with params should include the params in querystring

Emulate XmlHttpRequest with a .NET WebClient

由 孤街浪徒 提交于 2019-12-09 04:24:34
问题 AFAIK with XmlHttpRequest I can download and upload data just with the send method. But WebClient has plenty of methods. I don't want all the functionality of a WebClient . I just want to create an object that emulates a XmlHttpRequest , except that it doesn't have XSS restrictions. I also don't care about getting the response as an XML or even as a string right now. If I can get it as an array of bytes that's good enough. I thought that I could use the UploadData as my universal method, but

WebClient set headers

由 ぃ、小莉子 提交于 2019-12-09 02:27:44
问题 How I can set a header in the webClient class? I tried: client.Headers["Content-Type"] = "image/jpeg"; that throws a WebException My code: WebClient client = new WebClient(); client.Headers.Set("Content-Type", "image/png"); client.Headers.Set("Content-Length", length); client.Headers.Add("Slug", name); NameValueCollection nvc = new NameValueCollection(); nvc.Add("file", FileContents); Byte[] data = client.UploadValues(url, nvc); string res = Encoding.ASCII.GetString(data); Response.Write(res)

WebClient could not be found

由 我的梦境 提交于 2019-12-08 22:14:49
问题 I've already search on Stack Overflow (and google), but can't find the specific answer that solves my problem. I want to read some content out of a page. I've tried to use Webclient , but that gives me this error: The type or namespace name 'WebClient' could not be found (ae you missing a using directive or an assembly reference?) I've tried to search on google how to solve this error, but didn't find a correct answer (I've also tried HttpClient , same result). How do I make sure that I get

WebClient DownloadString not returning anything

由 白昼怎懂夜的黑 提交于 2019-12-08 19:55:36
问题 I want to get the source code from a Search query of Pirate Bay, I have this in my code but it doesn't return anything: WebClient webpage = new WebClient(); string source= webpage.DownloadString("http://thepiratebay.sx/search/documentary/0/99/0"); 回答1: Here's a quick test: xaml: <Label Content="{Binding ElementName=window_name, Path=SourceTest}"></Label> <Label Content="{Binding ElementName=window_name, Path=SourceTest2}"></Label> Code: string source_url = "http://thepiratebay.sx/search

WebClient.DownloadProgressChanged: Console.WriteLine() is blocking UI thread

由 浪尽此生 提交于 2019-12-08 19:14:27
I have the following simple code: private void btn_download_Click(object sender, EventArgs e){ WebClient client = new WebClient(); client.DownloadProgressChanged += client_DownloadProgressChanged; client.DownloadFileAsync(new Uri("http://.../file.zip"), "file.zip"); } void client_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e){ //Prints: "Downloaded 3mb of 61.46mb (4%)" Console.WriteLine("Downloaded " + ((e.BytesReceived / 1024f) / 1024f).ToString("#0.##") + "mb" + " of " + ((e.TotalBytesToReceive / 1024f) / 1024f).ToString("#0.##") + "mb" + " (" + e

Will an object be disposed automatically after an asynchronous event it subscribed to is raised?

由 左心房为你撑大大i 提交于 2019-12-08 19:10:21
问题 Let's suppose I have this function that can be called several times from the main thread. Every time this is called, I create a WebClient object to download some data asynchronously. My question... is this safe to do? Is the WebClient object released after the event is called? I wouldn't like to keep allocating memory if it is not going to be freed automatically. My application is for WP7 with Silverlight. Thanks! void DownloadData(string cURL) { WebClient webClient = new WebClient();

UploadString (Post Method) in VB.NET doesn't work

由 微笑、不失礼 提交于 2019-12-08 12:08:14
问题 I am trying to post simple data to some site, in this example to a php file on my local server. My VB.NET Code: Dim W As New Net.WebClient Dim A As String = "" W.Encoding = System.Text.Encoding.UTF8 Dim URL As String = "http://localhost/test/p.php" A = W.UploadString(URL, "bla=test") MsgBox(A) and here the p.php: <? print_r($_POST); echo "\n"; print_r($_GET); ?> so, when I start the VB.NET App, it just simple calls the p.php (GET) but POST doesnt work. Tried everything. Upladed the p.php to

C# WebClient HTTP Basic Authentication Failing 401 with Correct Credentials

由 百般思念 提交于 2019-12-08 10:50:34
I'm trying to automate configuring a wireless router's SSID and Password via c# webclient . The router has no API that I know of. It's an unbranded chinese router. The web config seems to be the only option for configuration. It uses http-basic-authentication (you browse to the IP address of the router and get a generic dialog asking for username and password). I've used Wireshark to get the headers and form fields that the http-post requests use when I manually update the SSID and Password (two separate forms). I then attempted to use webclient to emulate those post requests. Here is a
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