How do I make it check for a number/phrase (Contains)?

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Visual-Studio

VB

Hey , Glad you're taking your time to read this , I am developing a game and I ran into a stump... I am trying to make a points-spending system where if you have enough points , you can buy the item , as many as you want.. I tried this

If Game.NumericUpDown1.Contains("100") Then

But it pops up as an error , If someone can tell me how to do the "Contains" thing properly , That'd be much appreciated! :)