.NET Core 7 Mastery: Cross-Property Custom Model Validation with multiple properties

Explore advanced model validation in .NET Core - Custom model validation with multiple properties / cross-property validation, using custom attributes and reflection. Dive into custom attribute constructors, validationContext, Isvalid method, ValidationAttribute abstract class, property references, and success/error scenarios with practical Postman examples. GitHub: https://github.com/dmproj/NET-Core-7-Full-Course-YouTube Project: https://github.com/dmproj/net_core_entity_fw_planets_project ASP.NET Core 7 Full Course and Entity Framework Project.