ASP.NET MVC & ADO.NET Entity Framework clientside validation

Question

Using aspnet mvc2 with the model auto-generated by entity framework:

Is it possible to tell entity framework to auto-annotate all fields? eg:

If database field says not null then add [Required] If DB field is a nvarchar(x) then add [StringLength(x)]

And so on?

What if the field name contains the string "email" eg CustomerEmail - can I get EF to auto-annotate that with an appropriate annotation ([Regex()] maybe)

As I understand it, if the model fields are annotated, and I use both Html.ValidationMessageFor() and use if (ModelState.IsValid) in my controller, then that is all I need to do to have basic clientside input validation working?

Thanks

possible duplicate of stackoverflow.com/questions/2330573/… — Craig Stuntz
– Craig Stuntz, Commented Apr 28, 2010 at 12:59
Yes, its a duplicate - I didn't see the older question because its question and tags are too vague. The answer in that question hasn't helped either. — JK.
– JK., Commented Apr 28, 2010 at 21:17

Raj Kaimal · Accepted Answer · 2010-04-28 02:41:24Z

1

I am not aware of any automatically generated attributes.

As I understand it, if the model fields are annotated, and I use both Html.ValidationMessageFor() and use if (ModelState.IsValid) in my controller, then that is all I need to do to have basic clientside input validation working?

That is correct. http://bradwilson.typepad.com/blog/2009/10/aspnet-mvc-2-templates-part-2-modelmetadata.html

answered Apr 28, 2010 at 2:41

Raj Kaimal

8,31430 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

JK. Over a year ago

Its seems like it would be such a common requirement. Eg The field in the database is nvarchar(20), so you would expect to be able to somehow be able to get an automatic annotation of [StringLength(20)]. To have to manually type the annontation for each and every field would be very wrong.

JK. Over a year ago

I saw your new blog post weblogs.asp.net/rajbk/archive/2010/05/04/… solving this problem .. thanks a lot and +1 :)

Raj Kaimal Over a year ago

JK, the post is an early attempt. For example, you cannot make any changes to the auto generated fields. You could copy the generated class into another class but you have to do the extra work of making sure your classes are in sync.

Martin Ongtangco · Accepted Answer · 2010-04-28 02:43:45Z

0

in jQuery, you can run through every object in a page. If it's client side validation you're looking for, you can use jQuery's field validation.

answered Apr 28, 2010 at 2:43

Martin Ongtangco

23.6k17 gold badges62 silver badges86 bronze badges

2 Comments

JK. Over a year ago

With 50+ tables and many hundreds of fields, any solution must be automatic. It would be wrong to manually type any code when the database already contains the metadata describing if the field is required, the field length and so on.

Martin Ongtangco Over a year ago

you can separate these fields from one another by applying classes to the objects. for say, you search every input field there is, then locate if this field has, let's say, a "chumbawamba" class name in it.

Collectives™ on Stack Overflow

ASP.NET MVC & ADO.NET Entity Framework clientside validation

2 Answers 2

3 Comments

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related