Question

I have a dataTable a little different with additional some external fields from the database’s table. Is there any way to inser these rows without looping in the rows?

If my datatable would be the same with database table could I insert it quickly?

Answer 1

yes, you can do this using below code

using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConsoleApplication3.Properties.Settings.daasConnectionString"].ConnectionString))
{
  cn.Open();

  using (SqlBulkCopy copy = new SqlBulkCopy(cn))
  {
    copy.ColumnMappings.Add(0, 0);
    copy.ColumnMappings.Add(1, 1);
    copy.ColumnMappings.Add(2, 2);
    copy.ColumnMappings.Add(3, 3);
    copy.ColumnMappings.Add(4, 4);

    copy.DestinationTableName = "tNorthwind";

    copy.WriteToServer(dt);
  }
}  

http://www.codeproject.com/KB/database/DataTableToDataBase.aspx