Validating Strings in Visual Basic

This section discusses how to validate strings in Visual Basic.

In This Section

Constructing a Validation Function in Visual Basic
Discusses the properties of validation functions, and describes how to create and use validation functions.
How to: Validate File Names and Paths in Visual Basic
How to determine whether a string represents a file name or path.
How to: Validate Strings That Represent Dates or Times (Visual Basic)
How to determine whether a string represents a valid date.
How to: Validate Strings That Represent E-Mail Addresses (Visual Basic)
How to determine whether a string represents a valid e-mail address.
How to: Validate Text for Display in a Web Browser in Visual Basic
Demonstrates how to ensure that a browser will correctly display text.
Using Regular Expressions with the MaskedTextBox Control in Visual Basic
Demonstrates how to convert simple regular expressions to work with the MaskedTextBox control.
Regular Expressions vs. the Like Operator
Compares and contrasts the Like operator and regular expressions.
Walkthrough: Validate That Passwords Are Complex (Visual Basic)
How to determine whether a string has the characteristics of a strong password.