如何在MVC 3上创建时间戳数组

I am fairly new to MVC 3 and I was tasked with creating a to-do list, that has got timestamps for every independent variable, so when one variable changes, the timestamp of when it was changed would appear on the text field of that variable and not change the other timestamps of the other variables i.e each variable would have an individual timestamp. I believe I can only or most likely achieve this by creating an array. Any ideas on how I can carry this out?I am fairly new to MVC 3 and I was tasked with