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WebPermissionAttribute.AcceptPattern Property

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

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

property String^ AcceptPattern {
	String^ get ();
	void set (String^ value);
/** @property */
public String get_AcceptPattern ()

/** @property */
public void set_AcceptPattern (String value)

public function get AcceptPattern () : String

public function set AcceptPattern (value : String)

Property Value

A string containing a regular expression pattern that describes the URI accepted by the current WebPermissionAttribute. This string must be escaped according to the rules for encoding a System.Text.RegularExpressions.Regex constructor string.

Exception typeCondition


AcceptPattern is not a null reference (Nothing in Visual Basic) when you attempt to set the value. If you wish to specify more than one Accept URI, use an additional attribute declaration statement.

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

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

   static void CheckAcceptPermission( String^ uriToCheck )
      WebPermission^ permissionToCheck = gcnew WebPermission;
      permissionToCheck->AddPermission( NetworkAccess::Accept, uriToCheck );

   static void demoDenySite()
      // Passes a security check.
      CheckAcceptPermission( "http://www.contoso.com/Public/page.htm" );
      Console::WriteLine( "Public page has passed Accept permission check" );

         // Throws a SecurityException.
         CheckAcceptPermission( "http://www.contoso.com/Private/page.htm" );
         Console::WriteLine( "This line will not be printed" );
      catch ( SecurityException^ e ) 
         Console::WriteLine( "Expected exception: {0}", e->Message );

/** @attribute WebPermission(SecurityAction.Deny, AcceptPattern =
public static void CheckAcceptPermission(String uriToCheck)
    WebPermission permissionToCheck = new WebPermission();
    permissionToCheck.AddPermission(NetworkAccess.Accept, uriToCheck);
} //CheckAcceptPermission

public static void DemoDenySite()
    //Passes a security check.
    Console.WriteLine("Public page has passed Accept permission check");

    try {
        //Throws a SecurityException.
        Console.WriteLine("This line will not be printed");
    catch (SecurityException e) {
        Console.WriteLine("Expected exception: " + e.get_Message());
} //DemoDenySite

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

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