Question

For Each dr As myDAL.UsersRow In data
   str.AppendLine(dr.UserName)
Next

In the above code, I also need to include the row index so that it’s something like

str.AppendLine(dr.IndexNumber & " " & dr.UserName)

How can I achieve this?

P.S. data is not a DataTable but a generic list of myDAL.UsersRow

Answer 1

If data is a List<myDAL.UsersRow> as you suggest, you can use a “for” loop rather than a “for each” loop:

for i = 0 to data.Count - 1
    str.AppendLine(i & " " & data[i].UserName)
next

If, however, you’re implying that your “data” list is not in the same order as the original DataTable’s rows, you might be able to use the DataRowCollection.IndexOf method to locate the row in the original table:

for each dr as myDAL.UsersRow in data
    str.AppendLine(dr.Table.Rows.IndexOf(dr) & " " & dr.UserName)
next