webclient

问题 Opening a public page from browser works fine. Downloading same page using WebClient throws - (403) Forbidden. What is going on here ? Here is quick copy/paste example (used on console app) to specific page on web: try { WebClient webClient = new WebClient(); string content = webClient.DownloadString("http://he.wikisource.org/wiki/%D7%A9%D7%95%D7%9C%D7%97%D7%9F_%D7%A2%D7%A8%D7%95%D7%9A_%D7%90%D7%95%D7%A8%D7%97_%D7%97%D7%99%D7%99%D7%9D_%D7%90_%D7%90"); } catch (Exception ex) { throw; } 回答1: I

问题 I am trying to use WebClient.UploadFile with a HTTPS URL but I am ending up with "System.IO.IOException: The handshake failed due to an unexpected packet format" The same code works perfectly fine with Http but the server that I am trying to hit has a perfectly fine ssl certificate. Here is anything relevant to the web call: var url = WebServiceCommunication.GetProtocolName() + "..."; //turns out to be "https://... var wc = new WebClient(); //I am adding: wc.Headers.Add(HttpRequestHeader

问题 I have a console application that sends a XML to a MVC application and receive another XML as a response. It works perfectly, but I want to add authorization (for obvious reasons). Here is the code from the console application: using (var wc = new WebClient()) { return GetXmlFromBytes( wc.UploadData("URL", GetBytesFromXml(xmlToSend)) ); } And here is the code from the MVC application: public ActionResult DoSomething() { XElement xml = XElement.Load(new System.IO.StreamReader(Request

问题 I use this: WebClient mClient = new WebClient(); mClient.UseDefaultCredentials = false; mClient.Credentials = new NetworkCredential("Name", "Password"); Uri mUrl = new System.Uri("https://server"); mClient.DownloadDataAsync(mUrl); mClient.DownloadDataCompleted += MClient_DownloadDataCompleted;` and i get the error in the headline. What i do not understand is that if i use the same code in a console application in Visual Studio, i get the expected result! But if i use this code in my android

问题 I'm trying to figure out how to robustly handle proxy authentication errors (HTTP 407 status code) when using the System.Net.WebClient class. In the field, we see many users receiving a 407 proxy authentication WebException, but I'm not sure what a good default strategy is. In .Net 2.0/3.5, the proxy authentication settings are supposed to be inherited from the Internet Explorer system settings. Firefox, Opera and Chrome use these same settings. Here's the basic code we are using: using

问题 I want to add some custom headers into web request's header. I'm doing this by WebClient.Headers.Add("Header: Value") approach. There is not a problem with ASCII characters but non-ASCII characters. Is it possible to change " Value of Header's encoding "? 来源： https://stackoverflow.com/questions/14751072/c-sharp-webclient-non-english-request-header-value-encoding

问题 The following code: WebClient wc = new WebClient(); wc.Encoding = Encoding.UTF8; string Url = "http://www.tsetmc.com/tsev2/data/instinfodata.aspx?i=59266699437480384&c=64"; return wc.DownloadString(Url); code returns: �Q�T�MP�J�A|�^D����~���C�"�����l� ��;I&3=j=�iG�H9Ȓ�J�^� �j��T�Q=HH�'Qm�������1�hF�4�*�������{�x�\o? when I visit that URL in any web browser, I get: 12:29:45,A ,3540,3567,3600,3621,3690,3515,140,238204,849582597,1,20140914,122945;;1@2825@3523@3583@1700@1,1@2000@3522@3600@8700@2

问题 What I'm trying to do is have my PHP page display a string that I've created through a function in my C# application, via System.Net.WebClient. That's really it. In it' s simplest form, I have: WebClient client = new WebClient(); string URL = "http://wwww.blah.com/page.php"; string TestData = "wooooo! test!!"; byte[] SendData = client.UploadString(URL, "POST", TestData); So, I'm not even sure if that's the right way to do it.. and I'm not sure how to actually OBTAIN that string and display it

问题 I have following PS script to download file using WebClient . The download links are in a text file. The download works, however, I want to make sure I don't overwrite duplicate files so I added additional code. The code runs good for single file. However, if duplicate is found then the code breaks with this error: Exception calling "DownloadFile" with "2" argument(s): "An exception occurred during a WebClient request." The Write-Host $newTarget value looks like this: \\NRP-12-62-3\Root\NV

问题 I am using WebClient,DownloadString("http://example.com/string.txt"); When I call it the memory jumps up, but never goes down again, and since I need 2-3 different strings downloaded from the web the memory jumps up quite much. I am new to C# and still learning, but is there anyway to clear the memory after I have downloaded the string from the web? If not, do you know any other methods I can use to read from the web wich uses less memory? Thanks 回答1: WebClient implements IDisposable, so your