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Web Forms Validation
ASP.NET Web Forms Web Forms Server Controls
This section covers each of the different ways to validate user input in Web Forms, using the built-in ASP.NET validation controls.
| For information about | See this topic |
|---|---|
| Background information about using validation controls | Introduction to Validating User Input in Web Forms |
| What validation controls are available and what types of validation you can perform with them | Types of Validation |
| How to make sure users don't skip a field. | Validating Required Entries |
| How to make sure users enter only one of a restricted set of values. | Validating Against a Specific Value |
| How to make sure users enter only a date, or a number, or some other data format. | Validating Against a Data Type |
| How to check a user's entry against information in a database. | Validating Against Values in a Database |
| How to check that a user's entry follows a specific sequence of numbers, letters, or other characters ( such as a phone number, postal code, email address, and so on ) . | Validating Against Patterns |
| How to check that a user's entry falls between a specified low and high value. | Validating Against a Range of Values |
| How to create your own validation logic and tie it to a validation control. | Validating with a Custom Function |
| How to determine where error messages are displayed. | Controlling Validation Message Display |
| How to set font, color, and other attributes of error messages. | Formatting Validation Error Messages |
| How error message display affects the layout of your page. | Specifying Error Message Layout |
| How to create your own error display. | Displaying Custom Error Messages |
| How to call validation controls from your own code. | Validating Programmatically |
| How to test in your code whether the user's entries passed validation checking. | Testing Validity Programmatically |
| How validation controls work under specific circumstances and how they interact with one another | Special-Case Validation Results |
| How to turn off validation in code. | Disabling Validation at Run Time |
| How validation works in browsers that support Dynamic HTML ( such as Internet Explorer ) | Client-Side Validation |
| Creating custom client-side validation. | Enhancing or Replacing Client-Side Validation |
| How to allow users to submit a form even if it has errors on it. | Allowing Posting with Client-Side Validation Errors |
| How to control whether validation controls perform client validation or not. | Controlling Client vs. Server Validation |
See Also
ASP.NET Syntax for Validation Controls Data Entry Validation ( Client-Side )
