How can I perform autocompletion in a xamcomboeditor using "constains" and that it can be used as a filtering style for the other xamcomboeditors that exist
Hello Anthony ,
By design XamComboEditor auto-complete mode is executed using StartsWith criteria only , when you are in edit mode and start typing, the control filters the data and displays the rest of the suggested text by highlighting it ,and this is the default expected behavior of the control. I looked into the API and nothing been exposed to change the criteria.
You can find more information using this online help doc.
Regarding your 2nd requirement that this editor autocompletion can be used by other xamcomboeditors is something not available built in , you have to write your own app code for that.