Call a class

Question

Call a class Hello, Brand new to VB.NET, I am in a class and forgot to write down the example, so please help me out. The prof gave us a validation class for text boxes and I need to put it on my forms. The class is called validation.vb I got the part where I choose the text box on the forms code and then choose validating as the method, but I forget how he called it. It basically says if it is true then e.handle=false else e.handle=true and the input is dropped. TIA J