Exam Ref 70-483: Programming in C#

Objective 3.1: Validate application input

If your application runs in total isolation and processes only its own data, you can be sure that your application behaves the way it should behave.

But in the real world, you have to deal with external input. This input can come from another system, but most of the time it comes from your users. Validating all input to your application is an area that’s sometimes overlooked but that is of critical importance.

This objective covers how to:

• Explain why validating application input is important.

• Manage data integrity.

• Use Parse, TryParse, and Convert.

• Use regular expressions for input validation.

• Validating JSON and XML.

Why validating application input is important

When your application is in production, it has ...