Insert one line at a time into the database

Help
1

I have a variable array that converted to string and it has 3 rows, when doing the insert in the database is passed all the data of the variable in a single line, have the possibility of inserting line by line?
for example if the variable has 3 rows insert into the database 3 rows of data and not a row with only all the data

2

After converting into Array, use For each activity,

For Each item in Array
{
      insert one item into Database, the following expression contains the value of array item
      item.ToString 
}
3

sorry, I could not understand, did you example already sent an example?

4

You can loop through items as karthik said, else you can convert array to datatable and use the INSERT activity.
Ref: c# - from array to datatable - Stack Overflow