' 각 컨트롤의 소스를 주는 방법
 ' *************************************************************

=FirstName & " " & LastName ' Displays the values in the FirstName and LastName
 ' controls separated by a space

=Left(CompanyName, 4) ' Displays the first four characters of the value of the
                                 CompanyName control.

=Sum(Quantity*Price) ' Displays the sum of the product of the values of the
 ' Quantity and Price fields for all the records displayed on the form.

=IIf(IsNull(Sum(Quantity*Price),0,Sum(Quantity*Price))
 ' Displays a zero if the sum is Null; otherwise, displays the sum.

=Count(EmployeeID) ' Displays the number of records displayed by the form that
 ' have a non-Null value in the EmployeeID field.

=Count(*) ' Displays the number of records displayed by the form.
 ' Use the asterisk(*) to count all of the records.

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