Datatable select rows with date of specific month

Hi, I have a datatable with a column called “Initial Generation Date” which contains dates in text format (MM/dd/yyyy HH:mm:ss)
I would like to select and count rows where the column is from the same month.
I have something like this in place but I don’t think it will work:

(From p In LastPendingDt.Select() Where Convert.ToString(p.Item(“Initial Generation Date”)).Contains(LastMonthBatchTime.ToString(“MM/*/yyyy”) Select p).toArray.Count