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WebPermission Constructor (NetworkAccess, Regex)

Initializes a new instance of the WebPermission class with the specified access rights for the specified URI regular expression.

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

public:
WebPermission(
	NetworkAccess access, 
	Regex^ uriRegex
)

Parameters

access
Type: System.Net::NetworkAccess

A NetworkAccess value that indicates what kind of access to grant to the specified URI. Accept indicates that the application is allowed to accept connections from the Internet on a local resource. Connect indicates that the application is allowed to connect to specific Internet resources.

uriRegex
Type: System.Text.RegularExpressions::Regex

A regular expression that describes the URI to which access is to be granted.

This constructor initializes a WebPermission and grants its target permission to either make a remote host connection or accept a remote host connection using the URI described by the uriRegex parameter.

NoteNote

It is recommended that you create uriRegex using the RegexOptions::IgnoreCase, RegexOptions::Compiled, and RegexOptions::Singleline flags.

NoteNote

A candidate URI string is checked against the list of relevant regular expressions (AcceptList or ConnectList) in two ways. First, the candidate URI string is checked against the appropriate list; then, if there is no match, the candidate URI string is converted into a Uri and checked against the appropriate list.

The following example creates a new instance of WebPermission with connect rights for the specified System.Text.RegularExpressions::Regex.

// Create an instance of 'Regex' that accepts all URL's containing the host 
// fragment 'www.contoso.com'.
Regex^ myRegex = gcnew Regex( "http://www.contoso.com/.*" );

// Create a WebPermission that gives the permissions to all the hosts containing 
// the same fragment.
WebPermission^ myWebPermission = gcnew WebPermission( NetworkAccess::Connect,myRegex );

// Checks all callers higher in the call stack have been granted the permission.
myWebPermission->Demand();

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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