WebRequest.Create Method (String)

Initializes a new WebRequest instance for the specified URI scheme.

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

public static WebRequest Create(
	string requestUriString
)

Parameters

requestUriString
Type: System.String
The URI string that identifies the Internet resource.

Return Value

Type: System.Net.WebRequest
A WebRequest descendant for the specific URI scheme.

ExceptionCondition
NotSupportedException

The request scheme specified in requestUriString has not been registered.

ArgumentNullException

requestUriString is null.

SecurityException

The caller does not have permission to connect to the requested URI or a URI that the request is redirected to.

UriFormatException

The URI specified in requestUriString is not a valid URI.

The Create(String) method returns a descendant of the WebRequest class determined at run time as the closest registered match for requestUri.

For example, when a URI beginning with http:// is passed in requestUri, an HttpWebRequest is returned by Create.

The .NET Framework includes support for the http:// and https:// URI schemes. Custom WebRequest descendants to handle other requests are registered with the RegisterPrefix method.

The Create(String) method uses the requestUriString parameter to create a Uri instance that it passes to the new WebRequest.

Version Notes

Windows Phone

 If you attempt to access a file from an FTP site, the application throws NullRefrenceException instead of NotSupportedException.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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