抛出异常或处理异常？(Throw exception or treat exception? [closed])

 由于文本框可能绑定到代码隐藏中的double属性，我认为有一些聪明的转换前验证可以提供您看到的验证错误。 为了控制验证过程，我认为有几种方法可以解决它： 
 
 
 
 您可以使自己的验证规则 
 
 
 您可以从转换器返回validationresult（虽然IMO验证和转换似乎并不真正属于一起） 
 
 
 您可以使用IDataError接口和MVVM 
 
 
 以下是一些提供一些有用信息的链接： 
 
 
 
 使用ViewModel提供有意义的验证错误消息 
 
 
 WPF中的数据验证 
 
 
 在WPF中使用自定义验证规则 
 
 
 还有一件事，当将输入转换为double时，是否有任何特殊的理由使用Invariant文化而不是作为参数传递的文化？ 它可能在非英语文化（例如丹麦语）上失败，其中小数点分隔符是逗号（相当于英语文化中的千位分隔符）。 

Since the textbox is probably bound to a double property in the code-behind, I think there is some clever pre-conversion validation which gives the validation error you see. To control the validation process, I think there are several ways to go about it: 
 
 
 
You can make you own validation rule
 
 
You can return a validationresult from the converter (although IMO validation and conversion don't really seem to belong together) 
 
 
You can make use of the IDataError interface and MVVM
 
 
Here are a couple of links which provide some good information:
 
 
 
Using a ViewModel to Provide Meaningful Validation Error Messages
 
 
Data validation in WPF
 
 
Using Custom Validation Rules in WPF
 
 
One more thing, when converting the input to double, is there any particular reason to use Invariant culture instead of the culture passed as parameter? It might fail on a non-english culture (e.g. Danish), where the decimal separator is a comma (which is equivalent to thousand separator in English culture).