Gets or sets the value of the field as a double-precision floating-point number. Double, String, Boolean, Int32, Int64, TimeStamp, and Decimal128 values are converted. Returns a null reference (Nothing in Visual Basic) for a missing field; throws System.InvalidOperationException for the other types. The value is written as Double.

'Declaration
 
Public Property AsDouble As Nullable(Of Double)

public Nullable<double> AsDouble {get; set;}