Question : What is the best way to populate an unbound textbox using value in bound textbox for DLookup?

Unbound textbox is: [txtTeamMember]
Bound textbox is: [CorpID]
DLookup references are: [tblSAC].[TeamMember] and [tblSAC].[CorpID]

Answer : What is the best way to populate an unbound textbox using value in bound textbox for DLookup?

=Dlookup("Teammember", "tblsac", "CorpId = '" & txtCorpId & "'")