Hello,

I'm not sure I with my English can correctly explain what's going on but I will try :)

I have a grid which displays nested tables, and filter row is turned on. When some rows in datasource has child rows or child collection is not null, I can see an expand indicator. When a child list is null, I don't see indicator. So everything is ok with this, I suppose. But there is a situation when this won't work correctly. For example:

My grid datasource is a collection of objects which were created using Reflection. And sometimes I do a "special" filtering within child rows. Special because i don't use a XamGrid filtering. What I do is I "enter" a child collection and filter some data just inside a collection, using LINQ. When output contains at least a single line, everything works ok, but when collection becomes empty (.Count == 0), child rows completely disappear and expand indicator disappears too. I think this is not a correct behavior, because when child collection is not null, it must be still expandable because filter row is present.

I cannot give you a sample code because it's almost impossible to reproduce this functionality in a new project. And please don't ask me why I'm not using a XamGrid filtering feature in this case, this is a political decision made by somebody else, not me :)

I would be gratefull for any ideas about that.