Chapter 12. Validating User Input with Validation Controls
In this hour, we will cover
The various classes of input validation
How to use the RequiredFieldValidator to ensure that the user has provided input
How to use the CompareValidator
How to ensure that the user’s input falls between a range of values by using the RangeValidator
How to use the RegularExpressionValidator
The aesthetic properties of the validation Web controls
As we have examined in previous hours, collecting user input through an ASP.NET page is a relatively easy task. Unfortunately, when we’re collecting a user’s input, there is no guarantee that he has provided the desired input in an acceptable format. That is, imagine that you are asking the user to specify his weight, much like ...
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