//#1
//Override the ToString() method
public class Customer {
    public int ID { get; set; }
    public string Name { get; set; }

    public Customer(Int32 id, string name) {
        this.ID = id;
        this.Name = name;
    }

    public override string ToString() {
        return ID.ToString();
    }
}

public partial class MainForm : XtraForm {
    //...
        tokenEdit1.Properties.Tokens.Add(new TokenEditToken("Mary", new Customer(1, "Mary")));
        tokenEdit1.Properties.Tokens.Add(new TokenEditToken("John", new Customer(2, "John")));
        tokenEdit1.Properties.Tokens.Add(new TokenEditToken("David", new Customer(3, "David")));
}

//#2
//Assign a unique token value
public class Customer {
    public int ID { get; set; }
    public string Name { get; set; }
    }
}

public partial class MainForm : XtraForm {
    //...
        List<Customer> Customers = new List<Customer>();
        Customers.Add(new Customer() { ID = 1, Name = "John" });
        Customers.Add(new Customer() { ID = 2, Name = "Mary" });
        Customers.Add(new Customer() { ID = 3, Name = "David" });
        foreach (Customer customer in Customers) {
            tokenEdit1.Properties.Tokens.Add(new TokenEditToken(customer.Name, customer.ID));
        }
    }
}

'#1
'Override the ToString() method
Public Class Customer
    Public Property ID() As Integer
    Public Property Name() As String

    Public Sub New(ByVal id As Int32, ByVal name As String)
        Me.ID = id
        Me.Name = name
    End Sub

    Public Overrides Function ToString() As String
        Return ID.ToString()
    End Function
End Class

Partial Public Class MainForm
    Inherits XtraForm

    '...
        tokenEdit1.Properties.Tokens.Add(New TokenEditToken("Mary", New Customer(1, "Mary")))
        tokenEdit1.Properties.Tokens.Add(New TokenEditToken("John", New Customer(2, "John")))
        tokenEdit1.Properties.Tokens.Add(New TokenEditToken("David", New Customer(3, "David")))
End Class

'#2
'Assign a unique token value
Public Class Customer
    Public Property ID() As Integer
    Public Property Name() As String
End Class

Partial Public Class MainForm
    Inherits XtraForm
    '...
    Private Customers As New List(Of Customer)()
    Customers.Add(New Customer() With {
        .ID = 1,
        .Name = "John"
    })
    Customers.Add(New Customer() With {
        .ID = 2,
        .Name = "Mary"
    })
    Customers.Add(New Customer() With {
        .ID = 3,
        .Name = "David"
    })
    For Each customer As Customer In Customers
        tokenEdit1.Properties.Tokens.Add(New TokenEditToken(customer.Name, customer.ID))
    Next customer
End Class