使用asp.net向导控件时如何验证字段？

I have a wizard control in my asp.net 2.0 project, and it contains a few steps. The second step has a textbox with a standard requiredfieldvalidator control attached to it. When the user clicks Next and the box is empty, the validator complains, all is normal.I have a wizard control in my asp.net 2.0 proje