The grade points corresponding to a no answer/response for an OmrField.
[DataMemberAttribute()]
public double NoResponseGrade { get; set; }
NoResponseGrade specifies the deduction value in points of a no answer/response for the question corresponding to an OmrField. The default value is 0.
If OmrField is gradable, this value is used to grade the internal OmrCollections. In case the user needs to set different scores for different questions in OmrField, the value can be set individually for every OmrCollection.