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[Solved] DataStoreException with Transient field

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Development (API, general questions)

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Craig asked on 28 Mar 2013, 04:40 PM

Hello,
I'm trying to add a transient field to one of my entities. I've created a partial class in the OpenAccess project (example below) but when I run my application I get a DataStoreException: Invalid column name.
I want the client to see the transient field as an extra property of the class but I don't want it referred to when reading the data from the database. I thought this would be achieved using Transient attribute.
What have I missed?

Regards,
Craig
(OpenAccess ORM Q1 2013)

using System;

using System.Linq;

namespace MyNameSpace

{

public partial class MyType

{

private string _extraProperty;

[Telerik.OpenAccess.Transient]

public string ExtraProperty

{

get

{

return this._extraProperty;

}

set

{

this._extraProperty= value;

}

2 Answers, 1 is accepted

Accepted

answered on 29 Mar 2013, 04:24 PM

Hi Craig,

When you are using Attributes Mapping Type you should mark the field with [Transient] attribute, not the property. If you are using Fluent Mapping, then you should mark the property as transient by using the AsTransient() method.

For example in your case:

01.using System;

02.using System.Linq;

03.

04.namespace MyNameSpace

05.{

06. public partial class MyType

07. {

08. [Telerik.OpenAccess.Transient]

09. private string _extraProperty;

10. public string ExtraProperty

11. {

12. get

13. {

14. return this._extraProperty;

15. }

16. set

17. {

18. this._extraProperty= value;

19. }

20. }

21. }

22.}

I hope that helps.

All the best,
Boris Georgiev
the Telerik team

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