RangeValidator无法使用十进制值（C＃，企业库）

Question

Hello Stackoverflow fellas!

I'm working with Enterprise Library 5.0 and I'm trying to validate if a decimal value is from the specified range, but there's no obvious way to do it

eg

[RangeValidator(0, RangeBoundaryType.Exclusive, 1, RangeBoundaryType.Ignore)]  

works only for int, double & float.

I'm exactly looking for the equivalent of the Visual Basic's line of code:

<RangeValidator(GetType(Decimal), "0.00", RangeBoundaryType.Inclusive, "0.00", RangeBoundaryType.Ignore, MessageTemplate := "Value must be greater than 0.")>

I don't want to cast, because of the precision. Has anyone overcame this?

Answer 1

I'm not sure if this will work but try making your range values decimal:

[RangeValidator(0.0, RangeBoundaryType.Exclusive, 1.0, RangeBoundaryType.Ignore)]

If that doesn't work, try:

[RangeValidator(0.0m, RangeBoundaryType.Exclusive, 1.0m, RangeBoundaryType.Ignore)]

Answer 2

The RangeValudatorAttribute class doesn't have a constructor that supports decimals directly - VB may indirectly cast the

You can use the constructor that takes double values instead:

[RangeValidator(0.0, RangeBoundaryType.Exclusive, 1.0, RangeBoundaryType.Ignore)]  

Since 0.0 and 1.0 can be represented exactly in binary you shouldn't have a precision issue when comparing to decimal values.

Answer 3

我已经通过以下十进制方式解决了它：

[RangeValidator(typeof(decimal), "0.00", RangeBoundaryType.Inclusive, "1.00", RangeBoundaryType.Ignore)]