The errata list is a list of errors and their corrections that were found after the product was released.
The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.
Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update
| Version |
Location |
Description |
Submitted by |
Date submitted |
| PDF |
Page 33
before last paragraph (note) |
I tested with lazyloading set to false like this:
context.Configuration.LazyLoadingEnabled = false;
TestLazyLoading();
yet, the data is still loaded, contrary to the note
|
Paul Pacurar |
Feb 25, 2014 |
| Printed |
Page 34
1st paragraph |
In the second sentence of the page, there's a typo: "Let's assume we want to run though"; it should be "through".
|
Rutger |
Apr 22, 2016 |
| Printed, |
Page 104
2nd method of code on page |
The line
values[originalValue.Key] = originalValue.Value;
is currently subject to a bug in Entity Framework. See here:
Entity Framework Set POCO OriginalValue to NULL
http://connect.microsoft.com/VisualStudio/feedback/details/751465/entity-framework-set-poco-originalvalue-to-null
Note from the Author or Editor:
Rowan, seeing these reports from EF4.3. was it fixed in EF5 or EF6? |
Peter2060 |
Jun 30, 2012 |
| PDF |
Page 157
1st paragraph after the sidebar/call-out |
Skipping the sidebar in the box at the top of th page, the second sentence in the first paragraph reads:
MaxLengthAttribute is one of a group of attributes that inherit from a class called System.Data.Annotations.ValidationAttribute.
I believe it should read:
MaxLengthAttribute is one of a group of attributes that inherit from a class called System.ComponentModel.DataAnnotations.ValidationAttribute.
|
Jim Kay |
Feb 22, 2015 |
| PDF |
Page 160
3rd paragraph, it starts with: "You do this by applying..." |
The paragraph reads:
You do this by applying the Metadata attribute to the Person class:
[MetadataType(typeof(Person_Metadata))]
public partial class Person
What is not made clear is that this MetadataType attribute must be applied to ANOTHER "public partial class Person {}", NOT the partial class generated by Visual Studio (VS). The partial class generated by VS has a note at the top of the (in this case) person.cs file telling you manual changes can be overwritten. And they will be overwritten if changes are made to the associated database table's design and the EF model is updated from the database.
My point is that the author obviously knows this. Seasoned developers will know this, too. But a developer new to EF or to Visual Studio may get tripped up on this - i.e., you need to make ANOTHER partial class. Clarifying this will make us freshmen get up to speed quicker on things that may be obvious to the seasoned developer.
Thus, it should be made clear that you can make multiple partial classes (in this case a "Person" partial class) and that you have to make a partial class that is not overwritten by a code generator. THEN add the attribute to that unaffected partial class.
|
Jim Kay |
Feb 22, 2015 |
| PDF |
Page 163
the regular expression after 2nd paragraph |
Origin: [RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$")]
Suggestion: [RegularExpression(@"^[a-zA-Z-'\s]{1,40}$")]
The '' in this RegulaExpression makes no sense.
|
leecd |
Nov 08, 2015 |