Your Question is not clear. But as per my understanding you want to bind the database values to DropDownList..? right...?
for that fetch the information from DataBase , and then store that information in DataSet and bind that DataSet to DropDownList.
Ex:
DataSet ds=
ddl.DataSource=ds;
ddl.DataTextField="Name";
ddl.DataValueField="Id";
ddl.DataBind();
if you want more information regarding this you can search in google.
In google you get more results regarding this topic...