Binding to generic IList | Infragistics Forums

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Binding to generic IList

Andrew posted over 16 years ago

I bind a grid to a List of custom data objects. That custom object has a property of type IList. I would expect this to show as a child band to the parent row but it shows as a column displaying the ToString of the instance: "System.ComponentModel.BindingList'1[string]"

If I change my property to be have return type of BindingList instead of IList the child bands show. Why does the child band not show when my property type is IList?

Thanks.

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Offline Mike Saltzman posted over 15 years ago in reply to Viswanth

I'm not sure there is any really good solution for this. The problem here lies not in the grid but in the DotNet BindingManager. It doesn't seem to recognize IList as a viable list of child rows for DataBinding purposes.

The best thing I can think to do would be to use an UltraDataSource in virtual mode as a sort've intermediary between the grid and the "real" data source. The Virtual Mode Samples (included in the NetAdvantage SDK) demonstrates using the grid in virtual mode.
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Viswanth posted over 15 years ago in reply to Andrew

I have the same problem.. I'm not able to bind the child bands since it is IList. Whatz the solution ?
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Andrew posted over 16 years ago in reply to Mike Saltzman

yes it is a generic IList. Unfortunately I need to use IList because we are using NHibernate... Is there anyway to override the BindingManager to recognize the generic IList? Or if I wrap the list with a BindingSource or UltraBindingSource I guess that would work... but not ideal. Thanks for your response.
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Offline Mike Saltzman posted over 16 years ago

Is it a regular IList or a generic IList<>? The BindingManager in DotNet does not seem to recognize the generic IList<> as a valid list. You can use List<>, instead, though. Or BindingList<> is even better if you need to do more robust data modification like adding new rows.
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