Reading 10 million records Speedily

Hi I am trying to fill the combobox control on my form by 10 million records using the datasource property & using teh displaymember & valuemember property. The problem is that it is taking a lot of time for this ( abt 8.75 minutes) Is there a quicker way to it ? I also tried teh datareader it helps but I also need the values associated with these records which r not accesible be datareader!!!( Maybe I am wrong) Plz heelp me ASAP