Training
Module
Modify the content of strings using built-in string data type methods in C# - Training
Explore using the built-in string data type methods in C# to modify strings.
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
This section discusses how to validate strings in Visual Basic.
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
How to determine whether a string represents a valid date.
Using Regular Expressions with the MaskedTextBox Control in Visual Basic
Demonstrates how to convert simple regular expressions to work with the MaskedTextBox control.
Walkthrough: Validating That Passwords Are Complex
How to determine whether a string has the characteristics of a strong password.
.NET feedback
.NET is an open source project. Select a link to provide feedback:
Training
Module
Modify the content of strings using built-in string data type methods in C# - Training
Explore using the built-in string data type methods in C# to modify strings.
Documentation
How to: search within a string - Visual Basic
Learn more about: How to: search within a string (Visual Basic)
Learn more about: String Basics in Visual Basic
Learn more about: Strings in Visual Basic