Grid not seeing my generic objects properly

[Patrick Brunet]

Hi,

I have a generic business list which contains generic business objects and i am using the list to bind to a column in a Grid Control.

The column is marked as "ComboBox" in the cell type property, I pass the list to the DataSource property, "Id" as the ValueMember and "Description" as the DisplayMember. As the image shows, the grid does not seem to be capable of getting the "Description" property because it cannot drill down into the actual object as the .Net debugger shows.

I have no problem when binding a normal windows dropdown control.

Thanks in advance for your help,

Patrick



GridControlBizObject_3add62bf.zip

[Administrator]

What kind of list are you setting as the datasource? Here is a sample this works for List (and BindingList). Now, it will not recurse through complex poperties if that is what you are trying to do. That is not currently supported.



GC_Combo_20dfc510.zip

[Patrick Brunet]

Thanks Clay...

I used your sample and modified it to the way our list/objects works and found out the problem comes primarily from our list objects. Our list objects uses the CLSA framework (http://www.lhotka.net/cslanet/) and as soon as i change your sample to use these lists, the original problem re-occurs.

Have you had any experience using generic lists using the CSLA framework?

Thanks,

Patrick

>What kind of list are you setting as the datasource? Here is a sample this works for List (and BindingList). Now, it will not recurse through complex poperties if that is what you are trying to do. That is not currently supported.



GC_Combo_20dfc510.zip

[Administrator]

There are a few users using this library but evidently they are not using it in the same way as you as we have not had this particular problem pop up with them.

One potential way you can manage this is to add a wrapper class for your lists that implements ITypedList. In the GetItemProperties, you could pass back property descriptors that pick out exactly the values you want exposed. The grid should then see these exposed items without any problems. It would take a little coding to handle this.

[Patrick Brunet]

Thanks for the reply. After further testing, we were able to find out my the grid does not see the properties. The generic list is declared as such to initialize the generic object that it will have in it's list. But we declare it using an interface. The interface has the primary properties on it such as Id, IsDirty, etc and the grid cannot cast this interface into the real object, it only knows about the properties on the interface. What we was to add a function in the base class where it will return the objects in a generic List object of the interface and it solved the problem.

Pat