EffectParameter Value Property. The value of the parameter, or the first value if there are multiple. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page Value Property Type Default Value Read Only Description [C#] double [Visual Basic] Double n/a No The value of the parameter, or the first value if there are multiple Notes The value of the parameter, or the first value if there are multiple. Example None. previous page start next page