wpf - How to bind a grid column to a specific item in a collection -


here i'm attempting do...please advise if possible , how achieve?

<dxg:gridcolumn x:name="featureaverage"  fieldname="datas[0].featureaverage" width="75" header="avg" />

if change list datas property single value (not collection), following works properly.

<dxg:gridcolumn x:name="featureaverage"  fieldname="data.featureaverage" width="75" header="avg" />

edit: devexpress dxgrid control container , sample classes...

the entire grid here...

<dxg:gridcontrol x:name="gridcontrol1"  itemssource="{binding reports}" horizontalalignment="stretch" verticalalignment="stretch" margin="0,0,0,35">                     <dxg:gridcontrol.columns>                         <!--visible default-->                         <dxg:gridcolumn x:name="name" fieldname="name" width="68" />                         <dxg:gridcolumn x:name="feature1" fieldname="data.feature1" width="75" header="working" />                         <dxg:gridcolumn x:name="feature2" fieldname="datas[0].feature1" width="75" header="not working"/>                     </dxg:gridcontrol.columns>                     <i:interaction.triggers>                         <i:eventtrigger eventname="loaded">                             <custom:eventtocommand command="{binding gridloadedcommand}"/>                         </i:eventtrigger>                     </i:interaction.triggers>                     <dxg:gridcontrol.view>                         <dxg:tableview name="tableview1" showtotalsummary="true" />                     </dxg:gridcontrol.view>                 </dxg:gridcontrol>  public class myviewmodel {     public observablecollection<report> reports { get; set; } }  public class report {     public datetime startdatetime { get; set; }     public single duration { get; set; }     public data data { get; set; } //working fieldname="data.feature1"     public list<data> datas { get; set; } //not working fieldname="datas[0].feature1"  }  public class data {     public byte segment { get; set; }     public single feature1 { get; set; }     public single feature2 { get; set; } }


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