Spread Windows Forms 15.0
GrapeCity.Spreadsheet Assembly / GrapeCity.Spreadsheet Namespace / ExternalVariable Class / IsUndefined Method


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    IsUndefined Method (ExternalVariable)
    In This Topic
    Determines whether this external variable is undefined.
    Syntax
    'Declaration
     
    
    Public Function IsUndefined() As Boolean
    'Usage
     
    
    Dim instance As ExternalVariable
    Dim value As Boolean
     
    value = instance.IsUndefined()
    public bool IsUndefined()

    Return Value

    true if this external variable is undefined; otherwise, false.
    See Also