WebPermission Constructor (NetworkAccess, Regex)
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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 function WebPermission(
	access : NetworkAccess, 
	uriRegex : Regex


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.

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.


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


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.

No code example is currently available or this language may not be supported.
// Create an instance of 'Regex' that accepts all  URL's containing the host
// fragment 'www.contoso.com'.
Regex* myRegex = new Regex(S"http://www.contoso.com/.*");

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

// Checks all callers higher in the call stack have been granted the permission.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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

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