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NullRowID

See Also: RowId, RowId Helper Functions

Purpose

Sets a RowId variable to Null.

Return Type

RowId

Syntax

(NullRowID())

What it Does

NullRowId is used to "clear" a RowId variable. It moves a null value into a RowId variable.

Example

Function RefindLastRecord returns Boolean
    RowId riCustomer
    Boolean bFound

    Get priLastRow to riCustomer
    If (IsNullRowId(riCustomer)) begin
        Send RecordDoesNotExist
    End
    Else Begin
        Move (FindByRowId(Customer.File_Number, riCustomer)) to bFound
    End

    // after operation, set the RowId to null and store it in a property
    Move (NullRowId()) to riCustomer
    Set priLastRowId to riCustomer
    Function_Return bFound
End_Function