Collection of generic types [duplicate]

Answer 1

Here's some code to complete Jon's answer:

public interface IFormField
{
    string Name { get; set; }
    object Value { get; set; }
}

public class FormField : IFormField
{
    private Form Form;
    public T Value { get; set; }
    public string Name { get; set; }

    public void Process()
    {
        // do something
    }

    public FormField(Form form, string name, T value)
    {
        this.Name = name;
        this.Value = value;
        this.Form = form;
    }

    // Explicit implementation of IFormField.Value
    object IFormField.Value
    {
        get { return this.Value; }
        set { this.Value = (T)value; }
    }
}

And in your form:

ICollection Fields { get; set; }