摘要：publicclassDoubleUpDown:UpDownBase<double>{///<summary>///Internalconstructor.///</summary>publicDoubleUpDown():base(){Value=0;}///<summary>///CalledbyOnSpinwhenthespindirectionisSpinDirection.Increase.///</summary>protectedoverridevoidOnIncrement(){Value=Value+1;}///&l 阅读全文