The remote server returned an error: (400) bad request.

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I tried to download PDF from URL and convert it into base64 format. URL is in decoded format.
While using "webClient.DownloadData", it giving me this error:

"The remote server returned an error: (400) bad request."

Can anybody help me on this??

C#

string url ="https://www.sample.com" // url in decode format

using (WebClient webClient = new WebClient())
{
	byte[] imageBytes = webClient.DownloadData(url);
	Convert.ToBase64String(imageBytes);
}

What I have tried:

I tried using WebClient.DownloadFile, but it's giving permission error. Second, I try (HttpWebRequest)WebRequest.Create(url), but it is still giving me the same error.

Posted 13-Sep-23 18:18pm

Akshay malvankar

Updated 14-Sep-23 2:25am

Deeksha Shenoy

v3

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OriginalGriff · Answer 1 · 2023-09-13T19:17:00

Solution 1

Simple: there is no site with the URL "www.sample.pdf"
As far as I know, there is no ".pdf" domain at all, which implies that "sample.pdf" is a file, not a website - so you probably need to replace the "http://www." bit with the path to the folder and file in the site.

Posted 13-Sep-23 19:17pm

OriginalGriff

Comments

Akshay malvankar 14-Sep-23 1:22am

sorry typo mistake, and i am download pdf from URL

Richard Deeming · Answer 2 · 2023-09-14T00:09:00

Either the URL you are requesting does not support a GET request; or you are missing required parameters from your request; or you've hit one of those sites that doesn't work without a "user agent" header[^] set"; or there is something else wrong with the request.

Nobody here can help you. We don't have access to the code running on the site you're trying to download from.

You will need to contact the site admins to determine whether what you are trying to do is possible, and what the cause of the error is. We cannot do that for you.