AuthnContext Class

public class AuthnContext : SamlObject

Public Class AuthnContext
   Inherits SamlObject

public ref class AuthnContext : public SamlObject

Shows how to create an AuthnStatement and add it to an Assertion.

using System;
using ComponentPro.Saml2;

...

// Create SAML Assertion.
Assertion samlAssertion = new Assertion();

// Set Issuer
samlAssertion.Issuer = new Issuer("http://idp.domain.org", null, null, SamlNameIdentifierFormat.Entity, null);
samlAssertion.Subject = new Subject(new NameId("johnvu@test.com", null, null, SamlNameIdentifierFormat.EmailAddress, null));
samlAssertion.Conditions = new Conditions(new TimeSpan(1, 0, 0));

// Create SAML AuthnStatement.
ComponentPro.Saml2.AuthnStatement authnStatement = new ComponentPro.Saml2.AuthnStatement();
authnStatement.AuthnContext = new AuthnContext();
authnStatement.SessionNotOnOrAfter = DateTime.UtcNow.AddDays(1);
authnStatement.AuthnContext.AuthnContextClassRef = new AuthnContextClassRef(SamlAuthenticationContext.InternetProtocolPassword);

// Add it to the assertion.
samlAssertion.Statements.Add(authnStatement);

// Add an attribute statement.
AttributeStatement attributeStatement = new AttributeStatement();
// Add FirstName attribute
attributeStatement.Attributes.Add(new ComponentPro.Saml2.Attribute("FirstName", SamlAttributeNameFormat.Basic, null, "John"));

samlAssertion.Statements.Add(attributeStatement);

attributeStatement = new AttributeStatement();
// Add LastName attribute
attributeStatement.Attributes.Add(new ComponentPro.Saml2.Attribute("LastName", SamlAttributeNameFormat.Basic, null, "Vu"));

samlAssertion.Statements.Add(attributeStatement);

Imports ComponentPro.Saml2

...

' Create SAML Assertion. 
Dim samlAssertion As New Assertion()

' Set Issuer
samlAssertion.Issuer = New Issuer("http://idp.domain.org", Nothing, Nothing, SamlNameIdentifierFormat.Entity, Nothing)
samlAssertion.Subject = New Subject(New NameId("johnvu@test.com", Nothing, Nothing, SamlNameIdentifierFormat.EmailAddress, Nothing))
samlAssertion.Conditions = New Conditions(New TimeSpan(1, 0, 0))

' Create SAML AuthnStatement. 
Dim authnStatement As New ComponentPro.Saml2.AuthnStatement()
authnStatement.AuthnContext = New AuthnContext()
authnStatement.SessionNotOnOrAfter = Date.UtcNow.AddDays(1)
authnStatement.AuthnContext.AuthnContextClassRef = New AuthnContextClassRef(SamlAuthenticationContext.InternetProtocolPassword)

' Add it to the assertion.
samlAssertion.Statements.Add(authnStatement)

' Add an attribute statement. 
Dim attributeStatement As New AttributeStatement()
' Add FirstName attribute
attributeStatement.Attributes.Add(New ComponentPro.Saml2.Attribute("FirstName", SamlAttributeNameFormat.Basic, Nothing, "John"))

samlAssertion.Statements.Add(attributeStatement)

attributeStatement = New AttributeStatement()
' Add LastName attribute
attributeStatement.Attributes.Add(New ComponentPro.Saml2.Attribute("LastName", SamlAttributeNameFormat.Basic, Nothing, "Vu"))

samlAssertion.Statements.Add(attributeStatement)

Reference