What is entity validation error?
EntityValidationErrors is a collection representing entities that could not be successfully validated, and the internal ValidationErrors collection per entity is a list of property-level errors. These validation messages are usually helpful enough to find the source of the problem.
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How do I get DbEntityValidationException?
The easiest solution is to override SaveChanges in your entity class. You can catch the DbEntityValidationException, unwrap the actual errors, and create a new DbEntityValidationException with the improved message.
What is DbEntityValidationException?
DbEntityValidationException is the exception thrown by the Entity Framework when entity validation fails. While this exception is extremely valuable, the exception message leaves out the most important information: the actual validation errors.
What is entity validation?
The Entity Framework validates all data before it is written to the database by default, using a wide range of data validation methods. However, Entity Framework comes after UI data validation.
How do I validate the entity framework?
The Entity Framework provides a wide variety of validation functions that can be passed to a user interface for client-side validation or used for server-side validation. Using code first, you can specify validations using annotations or fluent API configurations.
What attributes can be used for data validation in MVC?
Validation Using Data Annotation Attributes
Attribute | Use |
---|---|
Range | Specifies the numeric range restrictions for a property value. |
Regular phrase | Specifies that a property value must match the specified regular expression. |
Credit card | Specifies that a property value is a credit card number. |
What are validation errors in Entity Framework?
The validation errors are: The PhoneNumber field must be a string or array type with a maximum length of ’12’; The Last Name field is required. The DbEntityValidationException also contains the entities that caused the validation errors.
How to improve Entity Framework’s dbentityvalidationexception?
System.Data.Entity.Validation.DbEntityValidationException: Validation failed for one or more entities. See the ‘EntityValidationErrors’ property for more details. The validation errors are: The PhoneNumber field must be a string or array type with a maximum length of ’12’; The Last Name field is required.
When to catch an exception in Entity Framework Stack Overflow?
The context or connection has been deleted. Some error occurred while trying to process entities in the context before or after sending commands to the database. Instead of catching Exception, you should catch SqlException. Thanks for contributing an answer to Stack Overflow! Please make sure you answer the question.
How does entityframework.Exceptions simplify database management?
EntityFramework.Exceptions simplifies this by handling all the database-specific details and throwing different exceptions for different cases. All you have to do is