Showing posts from May 18, 2014


When calling SaveChanges  on an entity context object you can sometimes get a DbEntityValidationException  error but it doesn't give you a convenient message as to what the error(s) were.  Here is a code snippet to get a convenient message from the DbEntityValidationException  object: Try context.SaveChanges() Catch ex As DbEntityValidationException 'Capture all default Entity Framework Validation errors like required fields, text size checks etc. Dim errorMessage As New StringBuilder For Each validationResult As DbEntityValidationResult In ex.EntityValidationErrors errorMessage.AppendLine( String .Format( "Entity of type [{0}] in state [{1}] has the following validation errors:" , validationResult.Entry.Entity. GetType .Name(), validationResult.Entry.State)) For Each item As DbValidationError In validationResult.Valid