捕捉Entity framework 6的详细异常提示

采用

try{}catch (Exception e){throw;}

　不能捕捉到详细异常提示, e.message的内容为"Validation failed for one or more entities. See 'EntityValidationErrors' property for more details."

如果需要获取详细的异常提示,采用

try
        {
            return base.SaveChanges();
        }
        catch (DbEntityValidationException ex)
        {
            var errorMessages = ex.EntityValidationErrors
                    .SelectMany(x => x.ValidationErrors)
                    .Select(x => x.ErrorMessage);

            var fullErrorMessage = string.Join("; ", errorMessages);

            var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);

            throw new DbEntityValidationException(exceptionMessage, ex.EntityValidationErrors);
        }

 链接: http://stackoverflow.com/questions/15820505/dbentityvalidationexception-how-can-i-easily-tell-what-caused-the-error