Moving large numbers of records with SqlBulkCopy

Sometimes you have to move large amounts of data in, out, or around SQL. There are plenty of ways to do that but few are as fast as using SqlBulkCopy. It is not fast. It is blazingly fast. As with anything else it has its place and limitations but it is well worth understanding at the least.
It is pretty easy to work with as the below example shows…
static void CopyData(DataTable sourceTable, SqlConnection destConnection)
// new method: SQLBulkCopy:
using (SqlBulkCopy s = new SqlBulkCopy(destConnection))
s.DestinationTableName = “SalesCopy”;
s.NotifyAfter = 10000;
s.SqlRowsCopied += new SqlRowsCopiedEventHandler(s_SqlRowsCopied);

When used properly it can make seemingly large data volume transactions trivial.