Comments on: Using complex types to make calling services less… complex

By: Dave Ward

Dave Ward — Wed, 03 Mar 2010 02:29:40 +0000

The “ScriptService” functionality handles that automatically. It’s similar to MVC’s model binding approach.

By: Eric Stevens

Eric Stevens — Wed, 03 Mar 2010 02:18:47 +0000

How does the web service handle the dto object?

By: Vijay anand

Vijay anand — Fri, 19 Feb 2010 08:29:06 +0000

Great post. Really informative. I’m a beginner. It’s really useful for me. Great site!

By: Daivd

Daivd — Tue, 16 Feb 2010 15:54:51 +0000

This does not work with the XMLDOM object. I can get this to work using the old MS behaviors (HTC). But stringify does not work on a XMLDOM object. Is there another way to pass a XMLDOM as an XMLDOM object?

By: Dave Ward

Dave Ward — Sat, 02 Jan 2010 17:27:58 +0000

I’m not familiar enough with Java to know specifically what its counterpart of this is, but there should definitely be one.

By: Ashwatha

Ashwatha — Wed, 23 Dec 2009 09:02:34 +0000

Great post, It changed my application architecture,
Dave Is there anything like this in Java Web Services?

By: Dinesh K Mandal

Dinesh K Mandal — Fri, 23 Oct 2009 15:31:56 +0000

It’s really a great post. Thanks for your valuable post.

By: Jie Li

Jie Li — Sun, 11 Oct 2009 16:09:29 +0000

Thanks for the reply. I really enjoy your articles.

By: Dave Ward

Dave Ward — Sun, 11 Oct 2009 04:39:41 +0000

It would need to be static if it were a page method. In this example, I’m using an ASMX service method instead of a page method, so the static modifier isn’t necessary.

By: Jie Li

Jie Li — Sun, 11 Oct 2009 03:17:18 +0000

I think it may be too oblivious. This method needs to be static, right?

[WebMethod]
public static void AddPerson(Person NewPerson)

By: Aashish Gupta

Aashish Gupta — Sun, 06 Sep 2009 06:12:41 +0000

Hi all,
I am using Linq to sql and DTO approach with WCF what i am able to achieve is direct object property transfer but what if i want to insert all the other dependent objects within the same call.
For example
If my UserTable is related with EmployeeTable and i want to insert data in both the tables do i have to pass both objects from jQuery UI or i can do something like
UserTable.Employee.FirstName = $(‘#tbFirstName’).val();

and pass the user object to WCF call and in the WCF call what will have i to write to submit all the changes in the datacontext.My guess would be InsertAllOnSubmit.

If this is not the correct approach then what could be the best approach.

Thanks

By: Joel

Joel — Fri, 14 Aug 2009 07:06:18 +0000

Thanks very much Dave. I appreciate your advice.

By: Dave Ward

Dave Ward — Fri, 14 Aug 2009 06:07:41 +0000

If you can use a List instead of your CustomObjectList, it will work. Worst case, use a simple structure like that as a DTO and map that to your CustomObjectList in the service method.

By: Joel

Joel — Fri, 14 Aug 2009 04:30:19 +0000

That first paragraph should end: “The object I want to serialize contains a List, where CustomObject contains a couple of primitive types.”

By: Joel

Joel — Thu, 13 Aug 2009 21:18:53 +0000

Dave,
I’ve been using the methods described in this article and I’ve gotten to the point where my objects to serialize are a little more complex and I’m running into errors trying to pass them between client and server. The object I want to serialize contains a List, where CustomObject contains a couple of primitive types.

Here is a link to a simplified demonstration of the problem

This was my initial attempt at jsonifying my client object. It resulted in the error
“The value “System.Collections.Generic.Dictionary`2[System.String,System.Object]” is not of type “CustomObject” and cannot be used in this generic collection. Parameter name: value”

Next, I tried using System.Web.Script.Serialization.JavaScriptSerializer to serialize an instance of my class just to see how the that serializer would do it. I noticed that the JavaScriptSerializer included a “__type” attribute and I copied that value into my client code as an attribute of the client-side object.

Here’s the same project modified to use the “__type” attribute.

This seems to get me closer to my goal, but now I get the error
“Operation is not valid due to the current state of the object.”

I’d appreciate any advice you can offer me on properly jsonifying this data structure.