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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.

See Also

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