Overriding List's Add()

Question

Can\'t i overload List\'s Add method ?

class ListDemo:List
 {
    public override T  Add(T value)
   {
      return base.Add(valu         


        

Answer 1

This worked for me (based on Sam Harwell's comment):

public class ListDemo : Collection
{
    protected override void InsertItem(int index, T item)
    {
        // Your add condition ...
        if (!this.Any(x => ...))
            base.InsertItem(index, item);
    }
}