[Solved] Expressioncolumn does not update

[Peter van Rees]

Hi,

I have 2 maskedtextboxcolumns. One is bound to a simple property of the bindingsource ("HeadCount"), the other is bound to a property of an objectreferenced by the bindingsource ("DailyRate.LocalizedValue").

Now I also have an expressioncolumn, with the following expression:

Dim expr As System.Linq.Expressions.Expression(Of Func(Of UnloadingPointAmount, Double)) = Function(amt As UnloadingPointAmount) amt.HeadCount * amt.DailyRate.LocalizedValue

When the HeadCount column is edited, the expression column updates beautifully. BUT, when the DailyRate.LocalizedValue column is edited no update of the expressioncolumn is triggered.

Any ideas on why this does not work? Fixes? Workarounds?

Thanks!

[Yavor Georgiev]

Hello Peter Van Rees,

 GridViewExpressionColumn cells listen to the PropertyChanged event of the row's data item in order to update themselves. You will need to modify your business object to raise PropertyChanged for "DailyRate.LocalizedValue" whenever the LocalizedValue property on DailyRate changes.

Best wishes, Yavor Georgiev
the Telerik team