public Dictionary <string, string> Validate(UserAccount model) { var modelErrors = new Dictionary <string, string>(); if (!ValidateUserName(model)) { modelErrors.Add(nameof(UserAccount.UserName), ValidationMessages.ExistsValidation("User Name")); } if (!ValidateFullName(model)) { modelErrors.Add(nameof(UserAccount.FullName), ValidationMessages.ExistsValidation("Full Name")); } return(modelErrors); }