IsNullRowID

See Also: RowId, RowId Helper Functions

Purpose

Determines if a RowId value is null.

Return Type

Boolean

Syntax

(IsNullRowId({RowId}))

Where:

• {RowId} is a value of type RowId

Example

Function RefindLastRecord returns Boolean
    RowId riRow
    Boolean bFound

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

    Function_Return bFound
End_Function  // RefindLastRecord

Notes

IsNullRowId returns true if the value of the RowId variable is null. This is the only way you can test if a RowId variable is "empty" (i.e., null).