webclient

问题 I'm trying to download multiple files based on what a user has selected on a form. I have multiple checkboxes in place, so If a user would select Checkboxes 1,3,4 I would want the webclient to download files 1.txt, 3.txt, 4.txt. The WebClient method is causing a "WebClient does not support concurrent I/O operations." error. If chk1.Checked Then WC.DownloadFileAsync(New Uri("http://www.google.com/1.txt), Path.Combine(DataSource & strDirectory, "1.txt")) End If If chk2.Checked Then WC

问题 So I have an api that I want to call to. The first call is an ahoy call and in the body of the request I need to send the ship_type, piratename and my piratepass. I then want to read the response which has my treasure booty that i will use for later. I'm able to do this with web request. but i feel like there is a better way to do it with webclient. (way I currently do it in webrequest) //Credentials for the Pirate api string piratename = "IvanTheTerrible"; string piratepass= "YARRRRRRRR";

问题 I'm working on a Windows Forms Application. I want the webclient to post the values from the NameValueCollection and then hit the submit button. But now it only adds the values to the html but never submits them. How can I simulate this buttonclick? private void button2_Click(object sender, EventArgs e) { var requestData = new NameValueCollection { {"prodids", "somevalue" }, {"customerid", "somevalue" }, {"submit_button", "submit" } }; byte[] request = client.UploadValues("myurl", "POST",

问题 Hello I'm following to this guide static async Task<Product> GetProductAsync(string path) { Product product = null; HttpResponseMessage response = await client.GetAsync(path); if (response.IsSuccessStatusCode) { product = await response.Content.ReadAsAsync<Product>(); } return product; } I use this example on my code and I want to know is there any way to use HttpClient without async/await and how can I get only string of response? Thank you in advance 回答1: Of course you can: public static

问题 I'm writing unit tests for some of the web services we've developed. I have a [TestMethod] that posts to a webservice as rest. Works great however it doesn't trigger the eventhandler method that I created. Through debugging, I've noticed that the eventhandler is getting excluder after the testmethod is executed. It goes to testcleanup. Has anyone encountered this problem? Here's the code [TestMethod,TestCategory("WebServices")] public void ValidateWebServiceGetUserAuthToken() { string

问题 I'm currently usign a Net.WebClient to download a file from the Internet. Now, I'd like to do another thing. I can know the flie size only after I started download with the parameter e.TotalBytesToReceive inside this sub Private Sub W_DownloadProgressChanged(ByVal sender As Object, ByVal e As _ Net.DownloadProgressChangedEventArgs) Handles W.DownloadProgressChanged How can I get the file size parameter of a link without downloading it? 回答1: Use the WebClient ResponseHeaders : Public Shared

问题 I'm currently usign a Net.WebClient to download a file from the Internet. Now, I'd like to do another thing. I can know the flie size only after I started download with the parameter e.TotalBytesToReceive inside this sub Private Sub W_DownloadProgressChanged(ByVal sender As Object, ByVal e As _ Net.DownloadProgressChangedEventArgs) Handles W.DownloadProgressChanged How can I get the file size parameter of a link without downloading it? 回答1: Use the WebClient ResponseHeaders : Public Shared

问题 I'm trying to send some POST data with the .NET WebClient class as following: WebClient objWebClient = new WebClient(); NameValueCollection objNameValueCollection = new NameValueCollection(); objNameValueCollection.Add("variable1", value1); objNameValueCollection.Add("variable2", value2); objNameValueCollection.Add("variable3", value3); byte[] bytes = objWebClient.UploadValues(objURI, "POST", objNameValueCollection); MessageBox.Show(Encoding.ASCII.GetString(bytes)); But when I print the POST

问题 I am trying to download files from a website with username/password. You need to pay for a registered account in order to download files - which we have done. I am attempting to pass in the username/password and download a file as follows: if (docUrl != null) { if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password)) this.WebClientInstance.Credentials = new NetworkCredential(username, password); fileData = this.WebClientInstance.DownloadData(docUrl); this.WebClientInstance

问题 I am trying to download files from a website with username/password. You need to pay for a registered account in order to download files - which we have done. I am attempting to pass in the username/password and download a file as follows: if (docUrl != null) { if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password)) this.WebClientInstance.Credentials = new NetworkCredential(username, password); fileData = this.WebClientInstance.DownloadData(docUrl); this.WebClientInstance