Implementing active authentication using adfs

string relyingPartyId = relyingPartyURL; //URL of the relying party in AD FS
string adfsEndpoint = serviceTokenUrl;  //Service Token Url -  /adfs/services/trust/13/usernamemixed


WSTrustChannelFactory factory = new WSTrustChannelFactory( 
new UserNameWSTrustBinding(SecurityMode.TransportWithMessageCredential),
new EndpointAddress(adfsEndpoint)
);

factory.TrustVersion = TrustVersion.WSTrust13;

var channelCredentials = factory.Credentials;
channelCredentials.UserName.UserName = userName;  //User Name of ADFS user
channelCredentials.UserName.Password = password;  //Password of ADFS user
channelCredentials.SupportInteractive = false;


RequestSecurityToken rst = new RequestSecurityToken
{
    RequestType = Microsoft.IdentityModel.Protocols.WSTrust.WSTrust13Constants.RequestTypes.Issue,
    AppliesTo = new EndpointAddress(relyingPartyId),
    KeyType = Microsoft.IdentityModel.Protocols.WSTrust.WSTrust13Constants.KeyTypes.Bearer,
};

IWSTrustChannelContract channel = factory.CreateChannel();

System.Net.ServicePointManager.ServerCertificateValidationCallback +=
(se, cert, chain, sslerror) =>
{
    return true;
};

SecurityToken token = channel.Issue(rst);