.NET Core 2.0 By Example

Validation

Validation is one of the key operations for any app working with data. Before we persist the data to the persistent store (database/filesystem), we should ensure the sanctity of the data, its format, type, size, and check if it complies to our rules and doesn't pose any potential security threat. This is ensured through validation. This can be done at both the client and server side. I am a firm believer that validation should be performed at both the client and server side. The validation has been abstracted from the developers into validation attributes, which reduces the amount of code needed to perform the validation. Validation attributes are C# attributes that derive from ValidationAttribute. Most of the commonly used validation ...