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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: 4.6, 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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