I have issue in radio button,I want to call event when radio button click that part works fine but radio button not select.without event call it select.
Probably you are not returning true in your click.delegate="clickedProduct(product)" by default, .preventDefault() is call on the event if result of function evaluation is not true
This (using checked.bind and a click handler that changes the checked property) is an anti-pattern. You are binding to the value and checked properties of the radio, which updates values automatically.
Clicking sets selectedProduct to product. I don’t know what your this.GetItems function is doing, but you probably want to iterate over those items instead of products and use the default checked behavior.