for InputField we can provide search help by attribute to which u r ui element is binded.
if u r attribute is refering to dictinary field and if it is assigned search help no need to do any thing
it will automatically populate.
if u r attribute is refering to elementry data type.
at this type of scenarios InputHelPMode should be dictionary search help
DictionarysearchHelp u have to specify explicitly(dictionary search help )
for every attribute ther is an option to mention the search help value in the context... you can make use of that or you can also go for dynamic search help using ovs.
alex b justin