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WebPermissionAttribute.ConnectPattern Property

Gets or sets a regular expression pattern that describes the URI connection controlled by the current WebPermissionAttribute.

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

public string ConnectPattern { get; set; }

Property Value

Type: System.String
A string containing a regular expression pattern that describes the URI connection controlled by this WebPermissionAttribute.


ConnectPattern is not null when you attempt to set the value. If you wish to specify more than one connect URI, use an additional attribute declaration statement.

When applying WebPermissionAttribute to your class, this property specifies what regular expression connect string is accepted for use within your class. This property is write-once.

The following example demonstrates how to use WebPermissionAttribute to specify an allowable ConnectPattern.

  // Set the WebPermissionAttribute  ConnectPattern property.
  [WebPermission(SecurityAction.Deny, ConnectPattern=@"http://www\.contoso\.com/Private/.*")]

public static void CheckConnectPermission(string uriToCheck) 
	WebPermission permissionToCheck = new WebPermission();
	permissionToCheck.AddPermission(NetworkAccess.Connect, uriToCheck);

public static void demoDenySite() {
	//Pass the security check.
	Console.WriteLine("Public page has passed Connect permission check");

		//Throw a SecurityException.
		Console.WriteLine("This line will not be printed");
	catch (SecurityException e) 
		Console.WriteLine("Expected exception" + e.Message);


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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