private LinkButton CreateDeleteButton()
{
var b = new LinkButton();
b.ID = ID + "_d_" + itemEditorIndex;
b.Text = "<b class='fa fa-trash-o'></b>";
b.ToolTip = "Delete item";
b.CommandArgument = itemEditorIndex.ToString();
b.CausesValidation = false;
b.Command += DeleteItemClick;
return b;
}