出错了

在运行了下面代码后出现的如图错误
FpSpread1.ActiveSheet.Cells(0, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.Solid), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(2, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.Dot), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(4, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.DashDot), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(6, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.DashDotDot), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(8, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.Dash), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(10, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.Custom), Nothing, Nothing)



        FpSpread1.ActiveSheet.Cells(12, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, FarPoint.Win.ComplexBorderSideStyle.SlantedDashDot), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(14, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, FarPoint.Win.ComplexBorderSideStyle.MediumDashDotDot), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(16, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, FarPoint.Win.ComplexBorderSideStyle.ThinLine), Nothing, Nothing)
        FpSpread1.ActiveSheet.Cells(18, 0).Border = New FarPoint.Win.ComplexBorder(Nothing, New FarPoint.Win.ComplexBorderSide(Color.Black, 2, Drawing2D.DashStyle.Dash), Nothing, Nothing)

应该是代码有点问题，ComplexBorderSide没有这个重载构造函数New FarPoint.Win.ComplexBorderSide(Color.Black, 2, FarPoint.Win.ComplexBorderSideStyle.SlantedDashDot)，如果要在构造函数中使用ComplexBorderSideStyle，只能使用一下两个构造函数：

1. ComplexBorderSide Constructor(ComplexBorderSideStyle,Color)
   
2. ComplexBorderSide Constructor(ComplexBorderSideStyle)

复制代码

系统应该提判断一下如果参数不对就应该提示。

因为这个参数是枚举类型，其值是0、1、2，所以，才参数的值只要是Int类型就不会报错。