QUICK TIPS: Don't take chances with numeric entries; take control with the NumericUpDown object (VB .NET)

摘要

If you've ever had to include a numeric text field on a form, then you know all the extra work that's needed to make sure the user is supplying a valid value. You either have to add code to prevent undesirable values or add code to notify the user after he's entered one. Of course, you can accept numeric entries without worry when you use the NumericUpDown control instead of a standard Textbox. Some of the great features of this control include: