Custom Compare Validator

Hello All,

 I need to validate two cutom made Time controls, the second one should always be greater that the first one. Unfortunately, the .NET built-in compare validator doesn't work with this custom Time control. Therefore, I'm trying to use a custom validator to do this job but I don't know how to let the custom validator contain two controls to validate, in other words; beside the "control to validate" property, I need to set another property for the other Time control, something like "control to compare".

Any ideas ??

Thanks in advance,
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