Validation expression syntax tutorials?

liunx

Guest
Does anyone know of any (ANY) validation expression syntax tutorials? I need to know how to write my own expressions, not just how to use the control. I've tried running searches but I can't get anything for some reason..Sorry, but your question is a little unclear.
Can you give some examples of what it is you are trying to validate?

ThanksI'm trying to validate a textbox so that it'll only accept letters and numbers. Pretty simple, but I dont know anything about writing a validation expression, so I was asking if anyone knew of any tutorials that went over the syntax of validation expressions because right now I really have no idea what I'm looking at...I'm trying to validate a textbox so that it'll only accept letters and numbers.




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