ASP.NET MVC中的自定义绑定 - 更改单个字段上的绑定行为

I have a double-precision floating point field in my database that stores seconds past midnight. I have code in c# that can convert this number to the form HH:MM:SS.ffffff, where f is fractions of a second. I also have code that can parse this back into a double.I have a double-precision floating point field