Question

private string _itemId;

[Browsable(true),
Description("Required identifier for the Item.")]
public string ItemId
{
    get { return _itemId; }
    set
    {
        if (string.IsNullOrEmpty(_itemId))
        {
            _itemId = value;
        }
    }
}

How would I actually make that required when someone uses the control? I’m trying to find an attribute that says something like Required(true).

Answer 1

I don’t know that there’s an attribute for this. I believe on the Page_Load event (or perhaps some rendering event) just check if the value has been set. If not then throw an exception.