Silverlight is very powerful development tool for webGIS . i'm new in using ArcGIS silverlight API and try to learn it from ArcGIS API for Silverlight . it's very interesting and helpful website but in actual you should use listboxes,comboboxes etc in your project .select by location and select by attribute are one of the most useful tools that you should use textboxes,comboboxes,buttons for them. is there any plugin/widget for select by location and selecet by attribute for ArcGIS silverlight API? . i found these for Flex but not for silverlight .