And i found that activity below to add list items, but this is accepting only dictionary(String as Key, Object as Value) and im totally stuck here. I want add all rows from my datatable as list items
There is one more way of JSON serialization which is my personal fav but since you requested through linq here it is.
The above will give you a collection of dictionary items which can be looped through using a ForEach and passed into the AddListItem activity one by one.