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HttpStatusCode Enumeration

Contains the values of status codes defined for HTTP.

Namespace:  System.Net
Assembly:  System (in System.dll)

type HttpStatusCode

Member nameDescription
Supported by Portable Class LibraryContinueEquivalent to HTTP status 100. Continue indicates that the client can continue with its request.
Supported by Portable Class LibrarySwitchingProtocolsEquivalent to HTTP status 101. SwitchingProtocols indicates that the protocol version or protocol is being changed.
Supported by Portable Class LibraryOKEquivalent to HTTP status 200. OK indicates that the request succeeded and that the requested information is in the response. This is the most common status code to receive.
Supported by Portable Class LibraryCreatedEquivalent to HTTP status 201. Created indicates that the request resulted in a new resource created before the response was sent.
Supported by Portable Class LibraryAcceptedEquivalent to HTTP status 202. Accepted indicates that the request has been accepted for further processing.
Supported by Portable Class LibraryNonAuthoritativeInformationEquivalent to HTTP status 203. NonAuthoritativeInformation indicates that the returned metainformation is from a cached copy instead of the origin server and therefore may be incorrect.
Supported by Portable Class LibraryNoContentEquivalent to HTTP status 204. NoContent indicates that the request has been successfully processed and that the response is intentionally blank.
Supported by Portable Class LibraryResetContentEquivalent to HTTP status 205. ResetContent indicates that the client should reset (not reload) the current resource.
Supported by Portable Class LibraryPartialContentEquivalent to HTTP status 206. PartialContent indicates that the response is a partial response as requested by a GET request that includes a byte range.
Supported by Portable Class LibraryMultipleChoicesEquivalent to HTTP status 300. MultipleChoices indicates that the requested information has multiple representations. The default action is to treat this status as a redirect and follow the contents of the Location header associated with this response.

If the HttpWebRequest.AllowAutoRedirect property is false, MultipleChoices will cause an exception to be thrown.

MultipleChoices is a synonym for Ambiguous.

Supported by Portable Class LibraryAmbiguousEquivalent to HTTP status 300. Ambiguous indicates that the requested information has multiple representations. The default action is to treat this status as a redirect and follow the contents of the Location header associated with this response.

If the HttpWebRequest.AllowAutoRedirect property is false, Ambiguous will cause an exception to be thrown.

Ambiguous is a synonym for MultipleChoices.

Supported by Portable Class LibraryMovedPermanentlyEquivalent to HTTP status 301. MovedPermanently indicates that the requested information has been moved to the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response.

MovedPermanently is a synonym for Moved.

Supported by Portable Class LibraryMovedEquivalent to HTTP status 301. Moved indicates that the requested information has been moved to the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response. When the original request method was POST, the redirected request will use the GET method.

Moved is a synonym for MovedPermanently.

Supported by Portable Class LibraryFoundEquivalent to HTTP status 302. Found indicates that the requested information is located at the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response. When the original request method was POST, the redirected request will use the GET method.

If the HttpWebRequest.AllowAutoRedirect property is false, Found will cause an exception to be thrown.

Found is a synonym for Redirect.

Supported by Portable Class LibraryRedirectEquivalent to HTTP status 302. Redirect indicates that the requested information is located at the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response. When the original request method was POST, the redirected request will use the GET method.

If the HttpWebRequest.AllowAutoRedirect property is false, Redirect will cause an exception to be thrown.

Redirect is a synonym for Found.

Supported by Portable Class LibrarySeeOtherEquivalent to HTTP status 303. SeeOther automatically redirects the client to the URI specified in the Location header as the result of a POST. The request to the resource specified by the Location header will be made with a GET.

If the HttpWebRequest.AllowAutoRedirect property is false, SeeOther will cause an exception to be thrown.

SeeOther is a synonym for RedirectMethod.

Supported by Portable Class LibraryRedirectMethodEquivalent to HTTP status 303. RedirectMethod automatically redirects the client to the URI specified in the Location header as the result of a POST. The request to the resource specified by the Location header will be made with a GET.

If the HttpWebRequest.AllowAutoRedirect property is false, RedirectMethod will cause an exception to be thrown.

RedirectMethod is a synonym for SeeOther.

Supported by Portable Class LibraryNotModifiedEquivalent to HTTP status 304. NotModified indicates that the client's cached copy is up to date. The contents of the resource are not transferred.
Supported by Portable Class LibraryUseProxyEquivalent to HTTP status 305. UseProxy indicates that the request should use the proxy server at the URI specified in the Location header.
Supported by Portable Class LibraryUnusedEquivalent to HTTP status 306. Unused is a proposed extension to the HTTP/1.1 specification that is not fully specified.
Supported by Portable Class LibraryTemporaryRedirectEquivalent to HTTP status 307. TemporaryRedirect indicates that the request information is located at the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response. When the original request method was POST, the redirected request will also use the POST method.

If the HttpWebRequest.AllowAutoRedirect property is false, TemporaryRedirect will cause an exception to be thrown.

TemporaryRedirect is a synonym for RedirectKeepVerb.

Supported by Portable Class LibraryRedirectKeepVerbEquivalent to HTTP status 307. RedirectKeepVerb indicates that the request information is located at the URI specified in the Location header. The default action when this status is received is to follow the Location header associated with the response. When the original request method was POST, the redirected request will also use the POST method.

If the HttpWebRequest.AllowAutoRedirect property is false, RedirectKeepVerb will cause an exception to be thrown.

RedirectKeepVerb is a synonym for TemporaryRedirect.

Supported by Portable Class LibraryBadRequestEquivalent to HTTP status 400. BadRequest indicates that the request could not be understood by the server. BadRequest is sent when no other error is applicable, or if the exact error is unknown or does not have its own error code.
Supported by Portable Class LibraryUnauthorizedEquivalent to HTTP status 401. Unauthorized indicates that the requested resource requires authentication. The WWW-Authenticate header contains the details of how to perform the authentication.
Supported by Portable Class LibraryPaymentRequiredEquivalent to HTTP status 402. PaymentRequired is reserved for future use.
Supported by Portable Class LibraryForbiddenEquivalent to HTTP status 403. Forbidden indicates that the server refuses to fulfill the request.
Supported by Portable Class LibraryNotFoundEquivalent to HTTP status 404. NotFound indicates that the requested resource does not exist on the server.
Supported by Portable Class LibraryMethodNotAllowedEquivalent to HTTP status 405. MethodNotAllowed indicates that the request method (POST or GET) is not allowed on the requested resource.
Supported by Portable Class LibraryNotAcceptableEquivalent to HTTP status 406. NotAcceptable indicates that the client has indicated with Accept headers that it will not accept any of the available representations of the resource.
Supported by Portable Class LibraryProxyAuthenticationRequiredEquivalent to HTTP status 407. ProxyAuthenticationRequired indicates that the requested proxy requires authentication. The Proxy-authenticate header contains the details of how to perform the authentication.
Supported by Portable Class LibraryRequestTimeoutEquivalent to HTTP status 408. RequestTimeout indicates that the client did not send a request within the time the server was expecting the request.
Supported by Portable Class LibraryConflictEquivalent to HTTP status 409. Conflict indicates that the request could not be carried out because of a conflict on the server.
Supported by Portable Class LibraryGoneEquivalent to HTTP status 410. Gone indicates that the requested resource is no longer available.
Supported by Portable Class LibraryLengthRequiredEquivalent to HTTP status 411. LengthRequired indicates that the required Content-length header is missing.
Supported by Portable Class LibraryPreconditionFailedEquivalent to HTTP status 412. PreconditionFailed indicates that a condition set for this request failed, and the request cannot be carried out. Conditions are set with conditional request headers like If-Match, If-None-Match, or If-Unmodified-Since.
Supported by Portable Class LibraryRequestEntityTooLargeEquivalent to HTTP status 413. RequestEntityTooLarge indicates that the request is too large for the server to process.
Supported by Portable Class LibraryRequestUriTooLongEquivalent to HTTP status 414. RequestUriTooLong indicates that the URI is too long.
Supported by Portable Class LibraryUnsupportedMediaTypeEquivalent to HTTP status 415. UnsupportedMediaType indicates that the request is an unsupported type.
Supported by Portable Class LibraryRequestedRangeNotSatisfiableEquivalent to HTTP status 416. RequestedRangeNotSatisfiable indicates that the range of data requested from the resource cannot be returned, either because the beginning of the range is before the beginning of the resource, or the end of the range is after the end of the resource.
Supported by Portable Class LibraryExpectationFailedEquivalent to HTTP status 417. ExpectationFailed indicates that an expectation given in an Expect header could not be met by the server.
Supported by Portable Class LibraryInternalServerErrorEquivalent to HTTP status 500. InternalServerError indicates that a generic error has occurred on the server.
Supported by Portable Class LibraryNotImplementedEquivalent to HTTP status 501. NotImplemented indicates that the server does not support the requested function.
Supported by Portable Class LibraryBadGatewayEquivalent to HTTP status 502. BadGateway indicates that an intermediate proxy server received a bad response from another proxy or the origin server.
Supported by Portable Class LibraryServiceUnavailableEquivalent to HTTP status 503. ServiceUnavailable indicates that the server is temporarily unavailable, usually due to high load or maintenance.
Supported by Portable Class LibraryGatewayTimeoutEquivalent to HTTP status 504. GatewayTimeout indicates that an intermediate proxy server timed out while waiting for a response from another proxy or the origin server.
Supported by Portable Class LibraryHttpVersionNotSupportedEquivalent to HTTP status 505. HttpVersionNotSupported indicates that the requested HTTP version is not supported by the server.

The HttpStatusCode enumeration contains the values of the status codes defined in RFC 2616 for HTTP 1.1.

The status of an HTTP request is contained in the HttpWebResponse.StatusCode property.

The following example compares the status returned by an HttpWebResponse with a member of the HttpStatusCode class to determine the status of a response.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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