How do I add to a row after already creating the row

Question

This is a simplifed verson of my code

 Dim dt As New DataTable()`
 dt.Columns.Add(New DataColumn("Year 0 ") 
 dt.Columns.Add(New DataColumn("Year 1") 
 dt.Columns.Add(New DataColumn("Year 2 ") 
 dt.Columns.Add(New DataColumn("Year 3")
 dt.Columns.Add(New DataColumn("Year 4 ") 
 dt.Columns.Add(New DataColumn("Year 5")
 dt.Columns.Add(New DataColumn("Total")
 dt.Rows.Add("Net Economic Benefit")

Which creates a table like this (ignore the other rows)

My question is, is there a way for me to add to the row "Net Economic Benefit" ? The code should basically do what the following code does

dt.Rows.Add("Net Economic Benefit", "1", "2", "3")

Except I was to create a loop to add the "1", "2", "3" so I cannot use that code as it will create multiple rows. Code might look something like:

dt.Rows.Add("Net Economic Benefit")
dt.Rows("Net Economic Benefit").AddRow("1") 

Basically it refers to the already added row "Net Economic Benefit" and then it adds the "1", "2", and "3"

Answer 1

Once you have an existing DataRow, however you may have created it, you set the fields by indexing the row, either by column name or ordinal:

Dim row As DataRow

'...

row("SomeColumn") = someValue
row(index) = someOtherValue