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HCL Domino Designer Basic User Guide and Reference
Basic product usage information and programming language reference information.
Connectors
Connectors provide native access to a wide variety of DBMS products, ODBC, the platform File system, Enterprise Resource Planning systems, and Transaction Processing systems.
LSX for Connectors
LotusScript® Extensions for Connectors (LC LSX) enhances the power of Notes® by extending its scripting to data outside of Notes through the use of Connectors. The programming model is independent of the individual connector. This eliminates the need to learn each individual system, while at the same time allowing experienced users to access the individual features of a specific system.
Chapter 5 LCField Class
This chapter provides information about the LCField class methods and properties.
IsNull Method for LCField
This method returns true or false depending on whether the specified field data is NULL. A field may potentially contain multiple values, some of which are null and others not.

IsNull Method for LCField

This method returns true or false depending on whether the specified field data is NULL. A field may potentially contain multiple values, some of which are null and others not.

Defined in

LCField

Syntax

flag = thisfield.IsNull (index)

Parameters


Parameter	Description
index	Long. Index identifying the field.

Return Value


Value	Description
flag	Boolean value, either TRUE or FALSE.

Example

Option Public
Uselsx "*lsxlc"  
Sub Initialize
  Dim field As New LCField (LCTYPE_INT, 4) ' four values in one field.
  Dim i%
  Call field.SetInt(1, 2020)
  Call field.SetInt(4, 12)
  For i = 1 To 4
    If field.IsNull(i) Then
      Print "value " & i & " is null"
    Else
      Print "value " & i & " = " & field.GetInt(i)
    End If
  Next
End Sub

Example Output

value 1 = 2020
value 2 is null
value 3 is null
value 4 = 12