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Credentials are the same both for webpage firing this call and webpage being accessed. I suspect that the web page that you are trying to access uses Forms Authentication. This means that you will have to provide a valid authentication cookie if you want to be able to access protected resources.
And in order to obtain a valid authentication cookie you will have to first authenticate yourself by sending a POST request to the LogOn page which emits the cookie.
Once you retrieve the cookie you will be able to send it along on subsequent requests on protected resources. You should also note that out of the box WebClient doesn't support cookies. For this reason you could write a custom cookie aware web client:. NET you might need to send a couple of other parameters along your logon request. Here's what you could do: authenticate in a web browser and look with FireBug the exact parameters and headers that need to be sent.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. We cannot download the files from the external Server network path with our Server credential. Read the article's link, given below, before reading this article because the following link helps you to learn the basics of the file download.
This class has many properties. These properties are given below-. The screenshots, given below, explain about the constructor and the properties.
Two inheritances are inheritances, which are inherited in NetworkCredential class. Important Function for Connecting External server There are the two important functions, which are used to connect and disconnect the Server or the external Server. I debugged and verified that it is hitting the line to set credentials. I use the same credentials to scrape the website with WatiN. Okay, I've done some sniffing around and found some useful info on this issue. I still haven't gotten it to work, but I think I'm closer.
First, you need to create a cookie aware WebClient that extends the WebClient class, as follows:. Next is to use the WebClient. UploadValues method to upload the login info to the target website.
The full process of authenticating and downloading the target resource is as follows:. I was wrong about the site using forms auth. However, when I call WebClient. DownloadData it is still only returning the redirected login page. I've tried to fix this by setting the AllowAutoRedirect property on the HttpWebRequest to false, but then it returns 0 bytes.
Is there something else that I need to do so it won't redirect and will take me to the resource once I have authenticated? Answered in a question edit. Converted to a community wiki answer. See Question with no answers, but issue solved in the comments or extended in chat. So the problem was between my ears. I was passing in the URL for the secure resource to the.
Typically, you would set this property to the credentials of the client on whose behalf the request is made. For security reasons, when automatically following redirects, store the credentials that you want to be included in the redirect in a CredentialCache and assign it to this property. This property will automatically be set to null upon redirection if it contains anything except a CredentialCache.
Having this property value be automatically set to null under those conditions prevents credentials from being sent to any unintended destination. Skip to main content. This browser is no longer supported.
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