This is related thread (Post #8)http://forums.arcgis.com/threads/18252-how-to-avoid-the-floating-effect-of-navigation-toolIt could be that Map's Minimum and MaximumResolution are not set therefore the ZoomSlider have not set it's Minimum and Maximum values as well.
サインインしたメンバーは投稿、更新のフォローなどができます。初めてですか?無料アカウントを登録してください。
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.