Flash card Ch5 ASP.NET Validation Controls

Validation Controls

• Specialized controls used in ASP.NET to validate user input on web forms, providing both client-side and server-side validation.

• General controls used for styling web forms in ASP.NET.

• Controls that only validate user input on the server side.

• Basic HTML elements used for form submission.

Client-Side Validation

• Validation performed on the server after data submission.

• Validation performed in the browser, before the data is sent to the server. It is fast and provides immediate feedback to the user.

• Validation that occurs only when the user submits the form.

• Validation that checks for data integrity after it reaches the database.

Text Property (RequiredFieldValidator)

• The error message that appears when the field is left empty by the user.

• The default value assigned to the field.

• The maximum length of the input allowed.

• The type of data that can be entered in the field.

Operator Property (CompareValidator)

• Defines the comparison type for validating controls, such as Equal, GreaterThan, LessThan, etc.

• Specifies the data type of the control being validated.

• Indicates whether the control is required or optional.

• Sets the maximum length of the input value.

Page.IsValid

• A property used in server-side validation to check if all the validation controls have passed.

• A method to render the page in a specific format.

• A function that retrieves the current user's session data.

• An event that triggers when the page is loaded.

Type Property (CompareValidator)

• Specifies the type of data that is being validated (e.g., Integer, Date, String).

• Defines the maximum length of the input data.

• Indicates whether the input is required or optional.

• Sets the default value for the input field.

RegularExpressionValidator

• Validates input format using a regular expression, such as checking if an email address or phone number is valid.

• Checks the length of input strings only.

• Validates input against a predefined list of acceptable values.

• Ensures that input is numeric only.

Server-Side Validation

• Validation performed on the client before submission.

• Validation performed on the server after the form data is submitted, ensuring more secure data handling.

• Validation that occurs only in the browser without server interaction.

• Validation that checks for spelling errors in the form data.

ValidationSummary

• Displays all validation error messages in a summary, allowing users to see all the validation issues at once.

• Shows only the first validation error message encountered.

• Hides validation errors until the form is submitted.

• Provides a detailed report of user activity on the form.

RequiredFieldValidator

• Ensures that the user does not leave a specific field blank.

• Validates the format of the input data.

• Checks if the user has provided a valid email address.

• Confirms that the user has accepted the terms and conditions.