webclient

问题 Newbie question: I'm sending a large text string in the form of a byte array using the WebClient.UploadData method to a web site but I'm not sure exactly where to retrieve that data from on the server. I've read posts that say it is in the request object which I already know but how exactly do I retrieve the specific byte array I sent like in the following c# pseudo code: byte[] dataSent = request.GettheByteArrayISentFromWebClientUploadDataMethod; I understand that it may not be as simple as

问题 I am working in the VS15 beta and trying to use WebClient. While System.Net is referenced, and the intellisense suggests the WebClient class is available, on build I get the following error: The type or namespace name 'WebClient' does not exist in the namespace 'System.Net' (are you missing an assembly reference?) MyProj.ASP.NET Core 5.0 HomeController.cs I am doing the following simplistic code: var client = new System.Net. var html = client.DownloadString(url); When I go to the definition

问题 How do you download data from an url in UWP? I'm used to using WebClient's DownloadData-method, but it can't be used anymore. 回答1: .NET for UWP does not have the WebClient class. But you have several alternative ways to download the data from URL in UWP. For example: var request = WebRequest.CreateHttp("http://www.bing.com"); var donnetClient = new System.Net.Http.HttpClient(); var winrtClient = new Windows.Web.Http.HttpClient(); If you want to download the data at background, you can use the

问题 I'm working on a web application that runs with ASP.Net 3.5 Somewhere in the application, I'm making calls to an external system. This call consists on downloading a string from a specific url : string targetUrl = BuildMyUrl(); WebClient wc = new WebClient(); string data = wc.DownloadString(targetUrl); This code works quite well with a acceptable response time (under 500ms). However, in specific cases this response time is over 15 seconds. I can reproduce the behavior, and I can clearly see

问题 I'm trying to create a Web API using Asp.NET Core that exposes routes to start and cancel long downloads of large files. The server should be able to handle multiple downloads at the same time. The download is performed using WebClient.DownloadFileAsync in order to have a short response time and returning a downloadId for later use. The instance of the WebClient is stored as value in a static dictionary whose corresponding key is of naturally the downloadId . The download should be canceled

问题 Is there any way to know the original name of a file you download using the WebClient when the Uri doesn't contain the name? This happens for example in sites where the download originates from a dynamic page where the name isn't known beforehand. Using my browser, the file gets the orrect name. But how can this be done using the WebClient? E.g. WebClient wc= new WebClient(); var data= wc.DownloadData(@"www.sometime.com\getfile?id=123"); Using DownloadFile() isn't a solution since this method

问题 So I thought Webclient.DownloadFileAysnc would have a default timeout but looking around the documentation I cannot find anything about it anywhere so I'm guessing it doesn't. I am trying to download a file from the internet like so: using (WebClient wc = new WebClient()) { wc.DownloadProgressChanged += ((sender, args) => { IndividualProgress = args.ProgressPercentage; }); wc.DownloadFileCompleted += ((sender, args) => { if (args.Error == null) { if (!args.Cancelled) { File.Move(filePath,

问题 I never used the WebClient before and I'm not sure if I should check the response from the server to know if the upload was successful or if I can let the file as uploaded if there is no exception. If I should check the response how can I do that? Parsing resposeHeaders property? Thanks in advance. 回答1: The UploadFile method returns a byte[] that contains the response the remote server returned. Depending on how the server manages responses to upload requests (and error conditions (see note 1

问题 I want my code to download a file from a website and save it to an directory that the user has selected in the FolderBrowserDialog ... i've tried this code below without success: ' Download the files If My.Computer.Network.IsAvailable Then Try wClient.DownloadFile(New Uri("DOWNLOAD LINK"), FolderBrowserDialog1.SelectedPath & "FILENAME.123") wClient.DownloadFile(New Uri("DOWNLOAD LINK"), FolderBrowserDialog1.SelectedPath & "FileName.123) wClient.DownloadFile(New Uri("Download LINK"),

问题 I created a class like below. public class WebDownload : WebClient { private int _timeout; /// <summary> /// Time in milliseconds /// </summary> public int Timeout { get { return _timeout; } set { _timeout = value; } } public WebDownload() { this._timeout = -1; } protected override WebRequest GetWebRequest(Uri address) { WebRequest result = base.GetWebRequest(address); result.Timeout = this._timeout; return result; } } When I create an object of this class it creates a webclient object and