相互依赖的链接规则

I am using Fluent Validation in my project.
In my ViewModel I have a property that is of type string, valid values are only string representing positive integers.
So, I created a simple IntegerValidator that checks whether or not the string can be parsed into an integer. This works.
Problem is, how to add the rule that it must be a positive integer? I would like to use the existing Greater Than Validator, but chaining it to the rule for my string property would compare it as a string, not as a parsed int. How to achieve this?

我在我的项目中使用流利的验证。在我的ViewModel中，我有一个类型为string的属性，有效值只是表示正整数的字符串。因此，我创建了一个简单的IntegerValidator，它检查字符串是否可以解析为整数。这个作品。问题是，如何添加它必须是一个正整数的规则?我希望使用现有的大于Validator的值，但是将它链接到我的string属性的规则会将它作为一个字符串进行比较，而不是作为一个解析的int类型进行比较。

Sample of what I would like to do (note the ToInt()):

我想做的样品(请注意ToInt()):

RuleFor(x => x.BatchNumber).SetValidator(new IntegerValidator())
                           .ToInt().GreaterThan(0);

1 个解决方案

#1

You could always use a custom method...

你可以使用自定义方法…

RuleFor(x=>x.BatchNumber).Must(BeAPositiveIntegerString);

private bool BeAPositiveIntegerString(string batchNumber)
{
    // check both parse ability and greater than (once parsed)
}

Less reusability but would work...

更少的可重用性，但会起作用……

#1