No, you don't need to override the NewsView control. All you have to do is the following:
1. Open the NewsView control and switch to the Advanced tab.
2. Make sure that the value of the CategoryKey
property is the same as the key of the querystring you are creating (at the Behavior tab).
3. Make sure that the value of the CategoryKeyType
property is set to ID (at QueryStringKeys tab).
Your control should now be working as expected.
I hope you'll find this information helpful. Let us know if there is anything else we can do for you.
the Telerik team
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