VBA IsNull Function
IsNull Description
Used to check for a NULL value.
Simple IsNull Examples
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Dim a MsgBox IsNull(a) |
Result: False
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Dim a a = Null MsgBox IsNull(a) |
Result: True
IsNull Syntax
In the VBA Editor, you can type “IsNull(” to see the syntax for the IsNull Function:
The IsNull function contains an argument:
Expression: An expression that will be tested.
IsNull Function Access VBA
The IsNull function works the same in Access VBA as it does in Excel VBA.
It is useful to check for a NULL value in a RecordSet Object.
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Sub AllocateGSTTypeIfNull() Set dbs = CurrentDb Set rst = dbs.OpenRecordset("tblInvoices", dbOpenDynaset) With rst .MoveFirst .MoveLast Do Until .EOF = False 'if GST Type is null then allocate 1 to it. If IsNull(rst.Fields("GSTType")) = True Then rst.Fields("GSTType") = 1 End If .MoveNext Loop End With End Sub |
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