A comma-separated list of values that are interpreted as null if they are found in the CSV file.

Data Type

string

Default Value

""

Remarks

This property is useful for normalizing placeholder text values into nulls during import.

When this property is set, any cell containing one of the specified values is interpreted as a null value.

For example, setting NullValues to "NaN,\N,N/A" causes all occurrences of these strings to be returned as "null".