June 2002
Intermediate to advanced
816 pages
28h 12m
English
Content preview from ASP.NET in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Name
Validators
Synopsis
ValidatorCollection = Page.Validators
Returns an instance of the
ValidatorCollection
class containing all the validator
controls contained on the requested page. We can access each
validator control by iterating the ValidatorCollection collection.
Parameters
-
ValidatorCollection An object variable of type ValidatorCollection.
Example
The code example displays a Textbox control with a RequiredFieldValidator and RegularExpressionValidator control assigned to it. In Page_Load, the code iterates through the ValidatorCollection returned by the Validators property and displays the ID and ErrorMessage property of each validator in the collection:
<%@ Page Language="vb" %> <html> <head> <title></title> <script runat="server"> Sub Page_Load( ) Dim Validator as BaseValidator For Each Validator in Validators Message.Text &= Validator.ID & " error message: " Message.Text &= Validator.ErrorMessage & "<br/>" Next End Sub </script> </head> <body> <form runat="server"> Phone: <asp:textbox id="phone" runat="server"/> <asp:requiredfieldvalidator id="rfvPhone" controltovalidate="phone" display="dynamic" errormessage="Required!" runat="server"/> <asp:regularexpressionvalidator id="revPhone" controltovalidate="phone" display="dynamic" validationexpression="^[2-9]\d{2}-\d{3}-\d{4}$" errormessage="Enter a phone number in the form xxx-xxx-xxxx" runat="server"/> <br/> <asp:button id="submit" text="Submit" runat="server"/> </form> <br/> <asp:label id="Message" runat="server"/> </body> ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.