Getting Started
  Introduction
  What is ASP.NET?
  Language Support

ASP.NET Web Forms
  Introducing Web Forms
  Working with Server Controls
  Applying Styles to Controls
  Server Control Form Validation
  Web Forms User Controls
  Data Binding Server Controls
  Server-Side Data Access
  Data Access and Customization
  Working with Business Objects
  Authoring Custom Controls
  Web Forms Controls Reference
  Web Forms Syntax Reference

ASP.NET Web Services
  Introducing Web Services
  Writing a Simple Web Service
  Web Service Type Marshalling
  Using Data in Web Services
  Using Objects and Intrinsics
  The WebService Behavior
  HTML Pattern Matching

ASP.NET Web Applications
  Application Overview
  Using the Global.asax File
  Managing Application State
  HttpHandlers and Factories

Cache Services
  Caching Overview
  Page Output Caching
  Page Fragment Caching
  Page Data Caching

Configuration
  Configuration Overview
  Configuration File Format
  Retrieving Configuration

Deployment
  Deploying Applications
  Using the Process Model
  Handling Errors

Security
  Security Overview
  Authentication & Authorization
  Windows-based Authentication
  Forms-based Authentication
  Authorizing Users and Roles
  User Account Impersonation
  Security and WebServices

Localization
  Internationalization Overview
  Setting Culture and Encoding
  Localizing ASP.NET Applications
  Working with Resource Files

Tracing
  Tracing Overview
  Trace Logging to Page Output
  Application-level Trace Logging

Debugging
  The SDK Debugger

Performance
  Performance Overview
  Performance Tuning Tips
  Measuring Performance

ASP to ASP.NET Migration
  Migration Overview
  Syntax and Semantics
  Language Compatibility
  COM Interoperability
  Transactions

Sample Applications
  A Personalized Portal
  An E-Commerce Storefront
  A Class Browser Application
  IBuySpy.com

  Get URL for this page

CustomValidator

For a detailed discussion of Web Forms validation, please see the Server Control Form Validation section of this QuickStart.

Working with CustomValidator

The CustomValidator control calls a user-defined function to perform validations that the standard validators can't handle. The custom function can execute on the server or in client-side script, such as JScript or VBScript. For client-side custom validation, the name of the custom function must be identified in the ClientValidationFunction property. The custom function must have the form

function myvalidator(source, arguments) Note that source is the client-side CustomValidator object, and arguments is an object with two properties, Value and IsValid. The Value property is the value to be validated and the IsValid property is a Boolean used to set the return result of the validation. You can view a client-side validation example in the ASP.NET Validation section.

For server-side custom validation, place your custom validation in the validator's OnServerValidate delegate.

The following sample illustrates using the CustomValidator control.

 
VB CustomValidator1.aspx

[Run Sample] | [View Source]

Copyright 2001 Microsoft Corporation. All rights reserved.