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    <p>The WebException is thrown whenever the web request cannot be executed successfully. For e.g 400 and 500 series of responses.</p> <p>WebExcpetion has a property named Status which will return the actual status of the response i.e 500 (Internal Server Error).</p> <p>Here is the list of all response codes: <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html" rel="nofollow noreferrer">http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html</a></p> <p>===============================================================================</p> <p>In general:</p> <p>1xx series of code = provisional response. These are not error codes. For e.g the 100 Continue response which tells that client should continue with its request. Usually WebRequest will not return such response, and handle it itself by sending the rest of request.</p> <p>2xx series of code = Request was successful received, understood and accepted. These are not error codes. For e.g 200 OK</p> <p>3xx series of code = Further action needs to be taken. Generally this is not error code (usually its for re-direction) for e.g '301 Moved Permanently', which means that the resource being request is moved to a new location, so any further requests by the client should be on the new URL provided in the response.</p> <p>OR '305 Use Proxy', which according to you results in an Exception.</p> <p>4xx series of code = Client errors. These can result in exception. for e.g '400 Bad Request' or '401 Unauthorized'</p> <p>5xx series of code = Server errors. These can result in exception. for e.g '500 Internal Server Error' or '504 Gateway Timeout'</p>
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    1. POC# HttpWebRequest.GetResponse - how is StatusCode usage handled for a non-exception vs webexception response?
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    1. COBut how many possible return codes could there be for the non-exception case when u do get a response back directly? There are are number of different response codes in the 200 range for example. Or is the first response correct here in that only 200 or 0 are possible for the non exception case?
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    2. COAnswer updated.
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    3. COThanks - so this would mean I assume you may het for example: successful response (ie no exception) but a Status Code of 300 where overall then it's still an issue for the user? That is then to check for true success you need to check for WebException + check for status code in 200 range then?
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