Do ADO.Net DataTables have indexes?

Question

I am using VSTS 2008 + C# + .Net 3.5 + SQL Server 2008 + ADO.Net. If I load a table from a database by using a DataTable of ADO.Net, and in the database table, I defined a c

Answer 1

DataTables have a PrimaryKey field that can serve as an index (they are fast already anyway). This field is not copied from the Primary Keys of the database (although that might be nice).