如何使用Watin将多个值传递到TextField

I'm using WatiN for web application testing. There is a field called enter choices where i need to add 3 values one after the another by pressing enter key i.e., add 1st value then press enter key and Add 2nd value press enter key, so please suggest me how to make this work using WatiN.I'm using WatiN for web application testing. Th