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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 = new Regex(@"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.
myWebPermission.Demand();
 

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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