Attributes Property

public IList<Attribute> Attributes { get; set; }

Public Property Attributes As IList(Of Attribute) 

public:
 property IList<Attribute> Attributes {
    IList<Attribute> get();
    void set(IList<Attribute> Attributes);
 }

Shows how to create, sign and validate an Assertion object.

using System;
using System.Security.Cryptography.X509Certificates;
using ComponentPro.Saml;
using ComponentPro.Saml1;

...

static Assertion CreateAssertion()
{
    // Create a new instance of the Assertion class. 
    Assertion assertion = new Assertion();

    // Set Issuer 
    assertion.Issuer = "urn:test";
    // Set Conditions 
    assertion.Conditions = new Conditions(new TimeSpan(1, 0, 0));

    // Create an AuthenticationStatement. 
    AuthenticationStatement authenticationStatement = new AuthenticationStatement(AuthenticationMethodIdenfifiers.Password);
    NameIdentifier nameIdentifier = new NameIdentifier("urn:test", NameIdentifierFormats.X509SubjectName, "uid=test,ou=People,dc=test,dc=com");
    SubjectConfirmation subjectConfirmation = new SubjectConfirmation(ConfirmationMethods.Bearer);

    authenticationStatement.Subject = new Subject(nameIdentifier, subjectConfirmation);

    // Add the AuthenticationStatement to the Assertion. 
    assertion.Statements.Add(authenticationStatement);

    // Add attributes to the Assertion. 
    AttributeStatement attributeStatement = new AttributeStatement();

    attributeStatement.Subject = authenticationStatement.Subject;
    attributeStatement.Attributes.Add(new ComponentPro.Saml1.Attribute("email", "urn:test", "john@test.com"));
    attributeStatement.Attributes.Add(new ComponentPro.Saml1.Attribute("FirstName", "urn:test", "John"));
    attributeStatement.Attributes.Add(new ComponentPro.Saml1.Attribute("LastName", "urn:test", "Vu"));

    assertion.Statements.Add(attributeStatement);

    return assertion;
}

static void SignAssertion(Assertion assertion)
{
    // Load certificate to sign the assertion. 
    X509Certificate2 cert = new X509Certificate2("Pkey.pfx", "password");

    // Sign the assertion 
    assertion.Sign(cert);
}

static void ValidateAssertion(Assertion assertion)
{
    if (assertion.IsSigned())
    {
        bool result = assertion.Validate();

        if (result)
            System.Diagnostics.Trace.WriteLine("Assertion is validated");
        else 
            System.Diagnostics.Trace.WriteLine("Assertion cannot be validated");
    }
}

static void Main()
{
    try 
    {
        Assertion assertion = CreateAssertion();
        SignAssertion(assertion);

        ValidateAssertion(assertion);
    }
    catch (SamlException samlException)
    {
        // Handle the exception here. 
        // ... 
    }
}

Imports System.Security.Cryptography.X509Certificates
Imports ComponentPro.Saml
Imports ComponentPro.Saml1

...

Private Shared Function CreateAssertion() As Assertion
    ' Create a new instance of the Assertion class. 
    Dim assertion As New Assertion()

    ' Set Issuer 
    assertion.Issuer = "urn:test" 
    ' Set Conditions 
    assertion.Conditions = New Conditions(New TimeSpan(1, 0, 0))

    ' Create an AuthenticationStatement. 
    Dim authenticationStatement As New AuthenticationStatement(AuthenticationMethodIdenfifiers.Password)
    Dim nameIdentifier As New NameIdentifier("urn:test", NameIdentifierFormats.X509SubjectName, "uid=test,ou=People,dc=test,dc=com")
    Dim subjectConfirmation As New SubjectConfirmation(ConfirmationMethods.Bearer)

    authenticationStatement.Subject = New Subject(nameIdentifier, subjectConfirmation)

    ' Add the AuthenticationStatement to the Assertion. 
    assertion.Statements.Add(authenticationStatement)

    ' Add attributes to the Assertion. 
    Dim attributeStatement As New AttributeStatement()

    attributeStatement.Subject = authenticationStatement.Subject
    attributeStatement.Attributes.Add(New ComponentPro.Saml1.Attribute("email", "urn:test", "john@test.com"))
    attributeStatement.Attributes.Add(New ComponentPro.Saml1.Attribute("FirstName", "urn:test", "John"))
    attributeStatement.Attributes.Add(New ComponentPro.Saml1.Attribute("LastName", "urn:test", "Vu"))

    assertion.Statements.Add(attributeStatement)

    Return assertion
End Function 
 
Private Shared Sub SignAssertion(ByVal assertion As Assertion)
    ' Load certificate to sign the assertion. 
    Dim cert As New X509Certificate2("Pkey.pfx", "password")

    ' Sign the assertion 
    assertion.Sign(cert)
End Sub 
 
Private Shared Sub ValidateAssertion(ByVal assertion As Assertion)
    If assertion.IsSigned() Then 
        Dim result As Boolean = assertion.Validate()

        If result Then 
            System.Diagnostics.Trace.WriteLine("Assertion is validated")
        Else 
            System.Diagnostics.Trace.WriteLine("Assertion cannot be validated")
        End If 
    End If 
End Sub 
 
Shared Sub Main()
    Try 
        Dim assertion As Assertion = CreateAssertion()
        SignAssertion(assertion)

        ValidateAssertion(assertion)
    Catch samlException As SamlException
        ' Handle the exception here. 
        ' ... 
    End Try 
End Sub

Reference