public sealed class UrlMembershipCondition : IMembershipCondition, System.Security.ISecurityEncodable, 
        System.Security.ISecurityPolicyEncodable, IConstantMembershipCondition {
// Public Constructors
   public UrlMembershipCondition(string url);
// Public Instance Properties
   public string Url{set; get; }
// Public Instance Methods
   public bool Check(Evidence evidence);
// implements IMembershipCondition
   public IMembershipCondition Copy(  );   
// implements IMembershipCondition
   public override bool Equals(object o);        
// overrides object
   public void FromXml(System.Security.SecurityElement e);
// implements System.Security.ISecurityEncodable
   public void FromXml(System.Security.SecurityElement e, PolicyLevel level);
 // implements System.Security.ISecurityPolicyEncodable
   public override int GetHashCode(  );    
// overrides object
   public override string ToString(  );    
// overrides object
   public SecurityElement ToXml(  );       
// implements System.Security.ISecurityEncodable
   public SecurityElement ToXml(PolicyLevel level);       
// implements System.Security.ISecurityPolicyEncodable
}

The UrlMembershipCondition class uses Url evidence to determine if an assembly or application domain qualifies for membership of a CodeGroup. The Url property contains the URL required to qualify for membership and can include a wildcard as the final element—for example, http://www.oreilly.com/apps/*. The value of the Url property is initially set in the UrlMembershipCondition constructor.

During policy resolution, the Check( ) method enumerates the provided Evidence collection and determines if it contains a Url evidence object. If so, UrlMembershipCondition tests for CodeGroup membership by comparing the string contained in its Url property with the URL contained in the Url.Value property.